Re: [Qgis-user] Drill hole section with QGIS 3

[C Hamilton]

Thanks everyone for the explanation. It looks like there is a lot of
interest. I had wondered if this was something that I could work on, but I
see that it would take more time than I have, although it seems like a real
fun project and I hope you can get the support for this.

Best wishes,

Calvin

On Thu, Mar 15, 2018 at 10:00 AM, Ramon Andinach 
wrote:

> Hi Calvin,
>
> In geology, we use a set of drill holes into the ground to interpret the
> space in the earth between them. Depending on what the geologist is
> interested in, we might be plotting the location of an aquifer, or a gold
> seam, an oil reservoir or some other feature. Note here, that I’m
> deliberately picking things that have length, breath and depth, so just
> interpolating a surface is not the same thing.
>
> So, things that you might want to be able to do include:
>  display attributes of the drill hole on a string representing the drill
> hole (or drill trace) in real 3D space.
>  Create slices (sections) of these drill traces (so depth is the right and
> left side), with windows of included data on either side of the slice.
>  Draw polygons snapped to the drill trace to link areas with similar
> features between holes.
>  Build a mesh/wireframe model that links the polygons together
>  Get a volume of said model
>  Create a voxel model of an attribute/s distribution within the mesh.
>
> This is probably a slightly economic geology skewed view, but hopefully
> I’ve left enough geo-jargon out that it’s understandable[1]
>
> Depends on how complex you want to be. A well known GIS package in my neck
> of the woods trumpets the ability to do the slice and dice and section bit,
> but really it’s making up non-earth plans and dressing them up as having
> proper depth (a section). For some people that seems enough.
> But - that sort of approach makes it really difficult if what you’d really
> like to do is show just the bits of the drill holes with say, gold grades
> greater that 20g/t - leaving any other result as transparent - and spin it
> slowly around in 3D so that you can get a sense of the go/d’s distribution
> pattern. This last one is much more complex and only possible if you’re
> working in a truly 3D environment.
>
> Hope that makes some sort of sense. Feel free to ask for clarification.
>
> Ramon.
> [1] I’ve made an attempt to swap out terms I’m used to using for more
> generic explanations or more comp sci friendly terms. Hopefully, mostly
> understandable to both sides now.
>
>
>
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Re: [Qgis-user] Drill hole section with QGIS 3

[perezjnv]

El 16/03/18 06:36, perezjnv escribió:


Hello QGIS community!
I managed to 3D visualization of subsoil  and surface data with the 
library for web threejs (http://threejs.org). Qgis is a plugins for 
this library, but I prefer to use it directly with javascript.
I can publish models of Geology (subsurface structural; contours, 
isopach, failures,  Wells, drill paths,   etc) and embossed or surface 
with models both LIDAR or for example SRTM 30 m with satellite as 
thematic material superimposed images. The outputs is spectacular and 
I got an agile methodology to achieve your web publication.


(Sorry my English is not very good)

Best regards,

José N. Pérez Duin
Analista Mayor
Desarollo Territorial
PDVSA




El 16/03/18 03:14, George Roth escribió:

Hi All, (and apologies if I just threw a wrench in the mailing list by replying 
to a digest),

I'd just like to add that in my experience, there is huge interest and demand 
from the academic earth science community for this kind of functionality. If I 
had a nickel for every time a scientist has asked me about 
visualizing/analyzing their 3-D data in QGIS, then I'd have enough money for a 
grant to fund the development of the whole set of features!

Common applications are often drill holes or cores (rock cores, sediment cores, ice 
cores), but also 2-D sections/transects, usually with seismic equipment. A person, truck, 
boat, snowmobile, or airplane moves in a line and uses a downward-pointing sensor to get 
information on the vertical structure of the ground, ocean, ice, or air. In geospatial 
terms, this is a 2-dimensional vertical "slice," and in our analysis we often 
interpolate many slices horizontally to infer the properties of what lies between each 
transect, like the others have mentioned.

Now, I realize that 3-D functionality in QGIS is in very early stages, and that 
it would take a long time and a lot of effort to get the functionality up to 
the level we've all been dreaming of. QGIS is already starting to conquer much 
of Arc's territory, and I guess we're now dreaming of conquering Fledermaus's? 
(Please don't sue me Fledermaus)

Again, there seems to be huge untapped (ha!) potential in the earth science 
community for this. The academic side has the enthusiasm and expertise, and the 
economic side has the enthusiasm, expertise, AND money. I think the resources 
are out there, but each of these communities just needs to convince the other 
that it's possible.

To Martin (Dobias, initial dev of QGIS 3D)... See what a can of worms you've 
opened!

George Roth
Quantarctica Project Coordinator
Norwegian Polar Institute


--
Today's Topics:

1. Re: Drill hole section with QGIS 3 (Ramon Andinach)
2. Re: Drill hole section with QGIS 3 (Madry, Scott)
3. Re: Drill hole section with QGIS 3 (Bob and Deb)

--

Message: 1
Date: Thu, 15 Mar 2018 22:00:47 +0800
From: Ramon Andinach
To: qgis-user
Subject: Re: [Qgis-user] Drill hole section with QGIS 3
Message-ID:<7bc74d58-8b37-4eaf-822b-a34e0067b...@westnet.com.au>
Content-Type: text/plain; charset="utf-8"

Hi Calvin,

In geology, we use a set of drill holes into the ground to interpret the space 
in the earth between them. Depending on what the geologist is interested in, we 
might be plotting the location of an aquifer, or a gold seam, an oil reservoir 
or some other feature. Note here, that I’m deliberately picking things that 
have length, breath and depth, so just interpolating a surface is not the same 
thing.

So, things that you might want to be able to do include:
  display attributes of the drill hole on a string representing the drill hole 
(or drill trace) in real 3D space.
  Create slices (sections) of these drill traces (so depth is the right and 
left side), with windows of included data on either side of the slice.
  Draw polygons snapped to the drill trace to link areas with similar features 
between holes.
  Build a mesh/wireframe model that links the polygons together  Get a volume 
of said model  Create a voxel model of an attribute/s distribution within the 
mesh.

This is probably a slightly economic geology skewed view, but hopefully I’ve 
left enough geo-jargon out that it’s understandable[1]

Depends on how complex you want to be. A well known GIS package in my neck of 
the woods trumpets the ability to do the slice and dice and section bit, but 
really it’s making up non-earth plans and dressing them up as having proper 
depth (a section). For some people that seems enough.
But - that sort of approach makes it really difficult if what you’d really like 
to do is show just the bits of the drill holes with say, gold grades greater 
that 20g/t - leaving any other result as transparent - and spin it slowly 
around in 3D so that you can get a sense of the go/d’s

Re: [Qgis-user] Drill hole section with QGIS 3

[Saber Razmjooei]

Hi All,

Firstly, many thanks to all who contributed to the campaign. We are pleased
to have reached the target.

As you can see from the proposal, the drill holes are not included. But we
are hoping to set the basis to support the sub-terrain. There will be
another round of crowd funding later in the year to add support for voxels
and 3D rasters. Profiles and other custom tools can be added as plugins.

All your feedback and suggestions are welcome. Feel free to add them as
feature request here so we have a list to refer to:
https://issues.qgis.org/projects/qgis/issues

Regards
Saber

On 16 March 2018 at 09:04, Richard Duivenvoorde  wrote:

> For those needing 3D features, may I draw your attention to the
> crowd-funding call of Lutra:
>
> https://www.lutraconsulting.co.uk/crowdfunding/more-qgis-3d/
>
> @lutra/sabel: you probably/maybe can pick some idea's from this thread
> to do?
>
> Regards,
>
> Richard Duivenvoorde
>
>
>
> On 15-03-18 15:00, Ramon Andinach wrote:
> > Hi Calvin,
> >
> > In geology, we use a set of drill holes into the ground to interpret the
> > space in the earth between them. Depending on what the geologist is
> > interested in, we might be plotting the location of an aquifer, or a
> > gold seam, an oil reservoir or some other feature. Note here, that I’m
> > deliberately picking things that have length, breath and depth, so just
> > interpolating a surface is not the same thing.
> >
> > So, things that you might want to be able to do include:
> >  display attributes of the drill hole on a string representing the drill
> > hole (or drill trace) in real 3D space.
> >  Create slices (sections) of these drill traces (so depth is the right
> > and left side), with windows of included data on either side of the
> slice.
> >  Draw polygons snapped to the drill trace to link areas with similar
> > features between holes.
> >  Build a mesh/wireframe model that links the polygons together
> >  Get a volume of said model
> >  Create a voxel model of an attribute/s distribution within the mesh.
> >
> > This is probably a slightly economic geology skewed view, but hopefully
> > I’ve left enough geo-jargon out that it’s understandable[1]
> >
> > Depends on how complex you want to be. A well known GIS package in my
> > neck of the woods trumpets the ability to do the slice and dice and
> > section bit, but really it’s making up non-earth plans and dressing them
> > up as having proper depth (a section). For some people that seems
> enough.
> > But - that sort of approach makes it really difficult if what you’d
> > really like to do is show just the bits of the drill holes with say,
> > gold grades greater that 20g/t - leaving any other result as transparent
> > - and spin it slowly around in 3D so that you can get a sense of the
> > go/d’s distribution pattern. This last one is much more complex and only
> > possible if you’re working in a truly 3D environment.
> >
> > Hope that makes some sort of sense. Feel free to ask for clarification.
> >
> > Ramon.
> > [1] I’ve made an attempt to swap out terms I’m used to using for more
> > generic explanations or more comp sci friendly terms. Hopefully, mostly
> > understandable to both sides now.
> >
> >
> >> On 15 Mar 2018, at 20:31, C Hamilton  >> > wrote:
> >>
> >> Pardon my ignorance on the matter, but what does a drill hole
> >> capability mean? Is it simply making a hole in a polygon or is it much
> >> more complex.
> >>
> >> Thanks,
> >>
> >> Calvin
> >>
> >> On Wed, Mar 14, 2018 at 3:46 PM, John Harrop  >> > wrote:
> >>
> >> It looks like no one has been answering this for you yet and I’m
> >> just catching up on a few days emails after my computer was in the
> >> shop.
> >>
> >> There is active interest in developing a drill hole plugin for
> >> QGIS3 now that 3D is more fully supported.  I also work with drill
> >> holes and have been running them in QGIS fairly easily in plan
> >> view where I just calculate traces to a plan view (either in a
> >> spreadsheet or using code) and apply theme patterns based on the
> >> attributes I kept with the segments.  This has worked reasonable
> >> well with grade and lithology which are two of the main things you
> >> want to see.
> >>
> >> Cross sections have been harder, but those are still “maps” in
> >> non-Earth coordinates.  Again I’ve tended to build those with
> >> projections to a plane in either a spreadsheet or by code.  This
> >> is not as easy to work with as plan view so I am very interested
> >> in seeing the developing interest in getting a drill hole section
> >> plugin for QGIS.  That will really finalize QGIS as the logical
> >> choice for geological exploration work.
> >>
> >> I’ve cc’ed the others I know using QGIS so I hope you can be
> >> included in the list of interested users.
> >>
> >> Regards,
> >>
> >> John Harrop, PGeo, FGS
> >> S

Re: [Qgis-user] Drill hole section with QGIS 3

[Richard Duivenvoorde]

For those needing 3D features, may I draw your attention to the
crowd-funding call of Lutra:

https://www.lutraconsulting.co.uk/crowdfunding/more-qgis-3d/

@lutra/sabel: you probably/maybe can pick some idea's from this thread
to do?

Regards,

Richard Duivenvoorde



On 15-03-18 15:00, Ramon Andinach wrote:
> Hi Calvin,
> 
> In geology, we use a set of drill holes into the ground to interpret the
> space in the earth between them. Depending on what the geologist is
> interested in, we might be plotting the location of an aquifer, or a
> gold seam, an oil reservoir or some other feature. Note here, that I’m
> deliberately picking things that have length, breath and depth, so just
> interpolating a surface is not the same thing.
> 
> So, things that you might want to be able to do include:
>  display attributes of the drill hole on a string representing the drill
> hole (or drill trace) in real 3D space.
>  Create slices (sections) of these drill traces (so depth is the right
> and left side), with windows of included data on either side of the slice.
>  Draw polygons snapped to the drill trace to link areas with similar
> features between holes.
>  Build a mesh/wireframe model that links the polygons together
>  Get a volume of said model
>  Create a voxel model of an attribute/s distribution within the mesh.
> 
> This is probably a slightly economic geology skewed view, but hopefully
> I’ve left enough geo-jargon out that it’s understandable[1]
> 
> Depends on how complex you want to be. A well known GIS package in my
> neck of the woods trumpets the ability to do the slice and dice and
> section bit, but really it’s making up non-earth plans and dressing them
> up as having proper depth (a section). For some people that seems enough. 
> But - that sort of approach makes it really difficult if what you’d
> really like to do is show just the bits of the drill holes with say,
> gold grades greater that 20g/t - leaving any other result as transparent
> - and spin it slowly around in 3D so that you can get a sense of the
> go/d’s distribution pattern. This last one is much more complex and only
> possible if you’re working in a truly 3D environment. 
> 
> Hope that makes some sort of sense. Feel free to ask for clarification.
> 
> Ramon.
> [1] I’ve made an attempt to swap out terms I’m used to using for more
> generic explanations or more comp sci friendly terms. Hopefully, mostly
> understandable to both sides now.
> 
> 
>> On 15 Mar 2018, at 20:31, C Hamilton > > wrote:
>>
>> Pardon my ignorance on the matter, but what does a drill hole
>> capability mean? Is it simply making a hole in a polygon or is it much
>> more complex.
>>
>> Thanks,
>>
>> Calvin
>>
>> On Wed, Mar 14, 2018 at 3:46 PM, John Harrop > > wrote:
>>
>> It looks like no one has been answering this for you yet and I’m
>> just catching up on a few days emails after my computer was in the
>> shop.
>>
>> There is active interest in developing a drill hole plugin for
>> QGIS3 now that 3D is more fully supported.  I also work with drill
>> holes and have been running them in QGIS fairly easily in plan
>> view where I just calculate traces to a plan view (either in a
>> spreadsheet or using code) and apply theme patterns based on the
>> attributes I kept with the segments.  This has worked reasonable
>> well with grade and lithology which are two of the main things you
>> want to see.
>>
>> Cross sections have been harder, but those are still “maps” in
>> non-Earth coordinates.  Again I’ve tended to build those with
>> projections to a plane in either a spreadsheet or by code.  This
>> is not as easy to work with as plan view so I am very interested
>> in seeing the developing interest in getting a drill hole section
>> plugin for QGIS.  That will really finalize QGIS as the logical
>> choice for geological exploration work.
>>
>> I’ve cc’ed the others I know using QGIS so I hope you can be
>> included in the list of interested users.
>>
>> Regards,
>>
>> John Harrop, PGeo, FGS
>> Senior Project Geologist
>> Coast Mountain Geological Ltd
>>
>> PO Box 62
>> Suite 488 - 625 Howe St
>> Vancouver, BC   V6C 2T6
>>
>>
>> ___
>> Qgis-user mailing list
>> Qgis-user@lists.osgeo.org 
>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> 
> 
> 
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Re: [Qgis-user] Drill hole section with QGIS 3

[George Roth]

Hi All, (and apologies if I just threw a wrench in the mailing list by replying 
to a digest),

I'd just like to add that in my experience, there is huge interest and demand 
from the academic earth science community for this kind of functionality. If I 
had a nickel for every time a scientist has asked me about 
visualizing/analyzing their 3-D data in QGIS, then I'd have enough money for a 
grant to fund the development of the whole set of features!

Common applications are often drill holes or cores (rock cores, sediment cores, 
ice cores), but also 2-D sections/transects, usually with seismic equipment. A 
person, truck, boat, snowmobile, or airplane moves in a line and uses a 
downward-pointing sensor to get information on the vertical structure of the 
ground, ocean, ice, or air. In geospatial terms, this is a 2-dimensional 
vertical "slice," and in our analysis we often interpolate many slices 
horizontally to infer the properties of what lies between each transect, like 
the others have mentioned.

Now, I realize that 3-D functionality in QGIS is in very early stages, and that 
it would take a long time and a lot of effort to get the functionality up to 
the level we've all been dreaming of. QGIS is already starting to conquer much 
of Arc's territory, and I guess we're now dreaming of conquering Fledermaus's? 
(Please don't sue me Fledermaus)

Again, there seems to be huge untapped (ha!) potential in the earth science 
community for this. The academic side has the enthusiasm and expertise, and the 
economic side has the enthusiasm, expertise, AND money. I think the resources 
are out there, but each of these communities just needs to convince the other 
that it's possible.

To Martin (Dobias, initial dev of QGIS 3D)... See what a can of worms you've 
opened!

George Roth
Quantarctica Project Coordinator
Norwegian Polar Institute


--
Today's Topics:

   1. Re: Drill hole section with QGIS 3 (Ramon Andinach)
   2. Re: Drill hole section with QGIS 3 (Madry, Scott)
   3. Re: Drill hole section with QGIS 3 (Bob and Deb)

--

Message: 1
Date: Thu, 15 Mar 2018 22:00:47 +0800
From: Ramon Andinach 
To: qgis-user 
Subject: Re: [Qgis-user] Drill hole section with QGIS 3
Message-ID: <7bc74d58-8b37-4eaf-822b-a34e0067b...@westnet.com.au>
Content-Type: text/plain; charset="utf-8"

Hi Calvin,

In geology, we use a set of drill holes into the ground to interpret the space 
in the earth between them. Depending on what the geologist is interested in, we 
might be plotting the location of an aquifer, or a gold seam, an oil reservoir 
or some other feature. Note here, that I’m deliberately picking things that 
have length, breath and depth, so just interpolating a surface is not the same 
thing.

So, things that you might want to be able to do include:
 display attributes of the drill hole on a string representing the drill hole 
(or drill trace) in real 3D space.
 Create slices (sections) of these drill traces (so depth is the right and left 
side), with windows of included data on either side of the slice.
 Draw polygons snapped to the drill trace to link areas with similar features 
between holes.
 Build a mesh/wireframe model that links the polygons together  Get a volume of 
said model  Create a voxel model of an attribute/s distribution within the mesh.

This is probably a slightly economic geology skewed view, but hopefully I’ve 
left enough geo-jargon out that it’s understandable[1]

Depends on how complex you want to be. A well known GIS package in my neck of 
the woods trumpets the ability to do the slice and dice and section bit, but 
really it’s making up non-earth plans and dressing them up as having proper 
depth (a section). For some people that seems enough. 
But - that sort of approach makes it really difficult if what you’d really like 
to do is show just the bits of the drill holes with say, gold grades greater 
that 20g/t - leaving any other result as transparent - and spin it slowly 
around in 3D so that you can get a sense of the go/d’s distribution pattern. 
This last one is much more complex and only possible if you’re working in a 
truly 3D environment. 

Hope that makes some sort of sense. Feel free to ask for clarification.

Ramon.
[1] I’ve made an attempt to swap out terms I’m used to using for more generic 
explanations or more comp sci friendly terms. Hopefully, mostly understandable 
to both sides now.


> On 15 Mar 2018, at 20:31, C Hamilton  wrote:
> 
> Pardon my ignorance on the matter, but what does a drill hole capability 
> mean? Is it simply making a hole in a polygon or is it much more complex.
> 
> Thanks,
> 
> Calvin
> 
> On Wed, Mar 14, 2018 at 3:46 PM, John Harrop  <mailto:jchar...@gmail.com>> wrote:
> It looks like no one 

[Qgis-user] Drill hole section with QGIS 3

[jwellman]

To help elaborate the mechanics involved for using drill information I will try 
to cover the data and steps.
 
1)  The data consists of at least 3 files. 
 
The first file (Collar) contains 1) the name of the drill hole (Primary Key) 
(surface perforation, bore hole, etc.), 2) the drill hole surface coordinates 
(x,y,z), and 3)  the drill hole length. 
 
The second file (Orientation) contains 1) drill hole (Primary Key), 2)  Azimuth 
(0-360), 3) Inclination (Usually a number from 0 to -90), and 3) the depth, 
i.e. the distance from the start of the drillhole for that particular set of 
measurements.
 
The third file (Attributes) contains 1) the drill hole (Primary Key), 2) A FROM 
or START distance value for the start of the attributes,  3) A TO or END 
distance value for the end of the attributes, and 4) as many as needed columns 
of Continuous or Classified values.
 
 
Often a dialog controls how the drill hole attributes are displayed.
 
 
The creation of 'Sections' entails creating a constrained 3d 'window' into the 
data with it's own set of contents, and dimensions on all axis.  Then the 
script would automate the output of the view such that for an area of interest, 
there would/would not be overlap between views, and there would also be a Plan 
View strip at the top.  Achieving this while displaying real world coordinates 
is preferred.
 
 
>From what I gleaned about the new 3d capabilities, the idea of draping a 
>registered raster onto a DEM or set of 3d contour (poly) lines appears to be 
>the primary functionality sought.  As it is the early stage, I assume the 
>wish-list que is longer than the accomplished que.
 
What does it take to setup a 'working group' to explore how to achieve 
something like this.  My reaction is to utilize python as much as possible.
 
I don't know QGIS so well yet.   I am proficient in some of the other 
commercial GIS packages. 
 
Thank you,
 
Jesse D. Wellman, cpg 
Geologist
 
 Reno, Nevada 89506
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Re: [Qgis-user] Drill hole section with QGIS 3

[Bob and Deb]

In the past, I've was hoping to make a QGIS plugin to do Liquefaction
Analysis .  This analysis
uses a borehole database, ground motion grids, and historical high ground
water grids.  What prevented me from doing it was that QGIS Relations can
not work with composite keys .  So, I
hope that any work on getting QGIS to work with boreholes would address
this problem.

-Bob

On Thu, Mar 15, 2018 at 7:20 AM, Madry, Scott  wrote:

> This is also of interest to the archaeological community, in terms of 3-D
> representations of excavations, soil strata, location of artifacts, etc.
> GRASS has Voxel capabilities that allow this, but additional tools like
> this would be of interest to archaeologists.
>
> Regards,
>
> Scott Madry
>
> Scott Madry, Ph.D.
> Research Associate Professor of Archaeology
> The University of North Carolina at Chapel Hill
>
> Tel 1-919-448-4493 <(919)%20448-4493>
> Email:mad...@email.unc.edu
> https://scottmadry.web.unc.edu
> Skype:   scott madry
>
>
> On Mar 15, 2018, at 10:00 AM, Ramon Andinach 
> wrote:
>
> This sender failed our fraud detection checks and may not
> be who they appear to be. Learn about spoofing
> 
> Feedback 
> Hi Calvin,
>
> In geology, we use a set of drill holes into the ground to interpret the
> space in the earth between them. Depending on what the geologist is
> interested in, we might be plotting the location of an aquifer, or a gold
> seam, an oil reservoir or some other feature. Note here, that I’m
> deliberately picking things that have length, breath and depth, so just
> interpolating a surface is not the same thing.
>
> So, things that you might want to be able to do include:
>  display attributes of the drill hole on a string representing the drill
> hole (or drill trace) in real 3D space.
>  Create slices (sections) of these drill traces (so depth is the right and
> left side), with windows of included data on either side of the slice.
>  Draw polygons snapped to the drill trace to link areas with similar
> features between holes.
>  Build a mesh/wireframe model that links the polygons together
>  Get a volume of said model
>  Create a voxel model of an attribute/s distribution within the mesh.
>
> This is probably a slightly economic geology skewed view, but hopefully
> I’ve left enough geo-jargon out that it’s understandable[1]
>
> Depends on how complex you want to be. A well known GIS package in my neck
> of the woods trumpets the ability to do the slice and dice and section bit,
> but really it’s making up non-earth plans and dressing them up as having
> proper depth (a section). For some people that seems enough.
> But - that sort of approach makes it really difficult if what you’d really
> like to do is show just the bits of the drill holes with say, gold grades
> greater that 20g/t - leaving any other result as transparent - and spin it
> slowly around in 3D so that you can get a sense of the go/d’s distribution
> pattern. This last one is much more complex and only possible if you’re
> working in a truly 3D environment.
>
> Hope that makes some sort of sense. Feel free to ask for clarification.
>
> Ramon.
> [1] I’ve made an attempt to swap out terms I’m used to using for more
> generic explanations or more comp sci friendly terms. Hopefully, mostly
> understandable to both sides now.
>
>
> On 15 Mar 2018, at 20:31, C Hamilton  wrote:
>
> Pardon my ignorance on the matter, but what does a drill hole capability
> mean? Is it simply making a hole in a polygon or is it much more complex.
>
> Thanks,
>
> Calvin
>
> On Wed, Mar 14, 2018 at 3:46 PM, John Harrop  wrote:
>
>> It looks like no one has been answering this for you yet and I’m just
>> catching up on a few days emails after my computer was in the shop.
>>
>> There is active interest in developing a drill hole plugin for QGIS3 now
>> that 3D is more fully supported.  I also work with drill holes and have
>> been running them in QGIS fairly easily in plan view where I just calculate
>> traces to a plan view (either in a spreadsheet or using code) and apply
>> theme patterns based on the attributes I kept with the segments.  This has
>> worked reasonable well with grade and lithology which are two of the main
>> things you want to see.
>>
>> Cross sections have been harder, but those are still “maps” in non-Earth
>> coordinates.  Again I’ve tended to build those with projections to a plane
>> in either a spreadsheet or by code.  This is not as easy to work with as
>> plan view so I am very interested in seeing the developing interest in
>> getting a drill hole section plugin for QGIS.  That will really finalize
>> QGIS as the logical choice for geological exploration work.
>>
>> I’ve cc’ed the others I know using QGIS so I hope you can be included in
>> the list of interested users.
>>
>> Regards,
>>
>> John Harrop, PGeo, FGS
>> Senio

Re: [Qgis-user] Drill hole section with QGIS 3

[Madry, Scott]

This is also of interest to the archaeological community, in terms of 3-D 
representations of excavations, soil strata, location of artifacts, etc. GRASS 
has Voxel capabilities that allow this, but additional tools like this would be 
of interest to archaeologists.

Regards,

Scott Madry

Scott Madry, Ph.D.
Research Associate Professor of Archaeology
The University of North Carolina at Chapel Hill

Tel 1-919-448-4493
Email:mad...@email.unc.edu
https://scottmadry.web.unc.edu
Skype:   scott madry


On Mar 15, 2018, at 10:00 AM, Ramon Andinach 
mailto:cust...@westnet.com.au>> wrote:


This sender failed our fraud detection checks and may not be who they appear to 
be. Learn about spoofing
Feedback
Hi Calvin,

In geology, we use a set of drill holes into the ground to interpret the space 
in the earth between them. Depending on what the geologist is interested in, we 
might be plotting the location of an aquifer, or a gold seam, an oil reservoir 
or some other feature. Note here, that I’m deliberately picking things that 
have length, breath and depth, so just interpolating a surface is not the same 
thing.

So, things that you might want to be able to do include:
 display attributes of the drill hole on a string representing the drill hole 
(or drill trace) in real 3D space.
 Create slices (sections) of these drill traces (so depth is the right and left 
side), with windows of included data on either side of the slice.
 Draw polygons snapped to the drill trace to link areas with similar features 
between holes.
 Build a mesh/wireframe model that links the polygons together
 Get a volume of said model
 Create a voxel model of an attribute/s distribution within the mesh.

This is probably a slightly economic geology skewed view, but hopefully I’ve 
left enough geo-jargon out that it’s understandable[1]

Depends on how complex you want to be. A well known GIS package in my neck of 
the woods trumpets the ability to do the slice and dice and section bit, but 
really it’s making up non-earth plans and dressing them up as having proper 
depth (a section). For some people that seems enough.
But - that sort of approach makes it really difficult if what you’d really like 
to do is show just the bits of the drill holes with say, gold grades greater 
that 20g/t - leaving any other result as transparent - and spin it slowly 
around in 3D so that you can get a sense of the go/d’s distribution pattern. 
This last one is much more complex and only possible if you’re working in a 
truly 3D environment.

Hope that makes some sort of sense. Feel free to ask for clarification.

Ramon.
[1] I’ve made an attempt to swap out terms I’m used to using for more generic 
explanations or more comp sci friendly terms. Hopefully, mostly understandable 
to both sides now.


On 15 Mar 2018, at 20:31, C Hamilton 
mailto:adenacult...@gmail.com>> wrote:

Pardon my ignorance on the matter, but what does a drill hole capability mean? 
Is it simply making a hole in a polygon or is it much more complex.

Thanks,

Calvin

On Wed, Mar 14, 2018 at 3:46 PM, John Harrop 
mailto:jchar...@gmail.com>> wrote:
It looks like no one has been answering this for you yet and I’m just catching 
up on a few days emails after my computer was in the shop.

There is active interest in developing a drill hole plugin for QGIS3 now that 
3D is more fully supported.  I also work with drill holes and have been running 
them in QGIS fairly easily in plan view where I just calculate traces to a plan 
view (either in a spreadsheet or using code) and apply theme patterns based on 
the attributes I kept with the segments.  This has worked reasonable well with 
grade and lithology which are two of the main things you want to see.

Cross sections have been harder, but those are still “maps” in non-Earth 
coordinates.  Again I’ve tended to build those with projections to a plane in 
either a spreadsheet or by code.  This is not as easy to work with as plan view 
so I am very interested in seeing the developing interest in getting a drill 
hole section plugin for QGIS.  That will really finalize QGIS as the logical 
choice for geological exploration work.

I’ve cc’ed the others I know using QGIS so I hope you can be included in the 
list of interested users.

Regards,

John Harrop, PGeo, FGS
Senior Project Geologist
Coast Mountain Geological Ltd

PO Box 62
Suite 488 - 625 Howe St
Vancouver, BC   V6C 2T6

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Re: [Qgis-user] Drill hole section with QGIS 3

[Ramon Andinach]

Hi Calvin,

In geology, we use a set of drill holes into the ground to interpret the space 
in the earth between them. Depending on what the geologist is interested in, we 
might be plotting the location of an aquifer, or a gold seam, an oil reservoir 
or some other feature. Note here, that I’m deliberately picking things that 
have length, breath and depth, so just interpolating a surface is not the same 
thing.

So, things that you might want to be able to do include:
 display attributes of the drill hole on a string representing the drill hole 
(or drill trace) in real 3D space.
 Create slices (sections) of these drill traces (so depth is the right and left 
side), with windows of included data on either side of the slice.
 Draw polygons snapped to the drill trace to link areas with similar features 
between holes.
 Build a mesh/wireframe model that links the polygons together
 Get a volume of said model
 Create a voxel model of an attribute/s distribution within the mesh.

This is probably a slightly economic geology skewed view, but hopefully I’ve 
left enough geo-jargon out that it’s understandable[1]

Depends on how complex you want to be. A well known GIS package in my neck of 
the woods trumpets the ability to do the slice and dice and section bit, but 
really it’s making up non-earth plans and dressing them up as having proper 
depth (a section). For some people that seems enough. 
But - that sort of approach makes it really difficult if what you’d really like 
to do is show just the bits of the drill holes with say, gold grades greater 
that 20g/t - leaving any other result as transparent - and spin it slowly 
around in 3D so that you can get a sense of the go/d’s distribution pattern. 
This last one is much more complex and only possible if you’re working in a 
truly 3D environment. 

Hope that makes some sort of sense. Feel free to ask for clarification.

Ramon.
[1] I’ve made an attempt to swap out terms I’m used to using for more generic 
explanations or more comp sci friendly terms. Hopefully, mostly understandable 
to both sides now.


> On 15 Mar 2018, at 20:31, C Hamilton  wrote:
> 
> Pardon my ignorance on the matter, but what does a drill hole capability 
> mean? Is it simply making a hole in a polygon or is it much more complex.
> 
> Thanks,
> 
> Calvin
> 
> On Wed, Mar 14, 2018 at 3:46 PM, John Harrop  > wrote:
> It looks like no one has been answering this for you yet and I’m just 
> catching up on a few days emails after my computer was in the shop.
> 
> There is active interest in developing a drill hole plugin for QGIS3 now that 
> 3D is more fully supported.  I also work with drill holes and have been 
> running them in QGIS fairly easily in plan view where I just calculate traces 
> to a plan view (either in a spreadsheet or using code) and apply theme 
> patterns based on the attributes I kept with the segments.  This has worked 
> reasonable well with grade and lithology which are two of the main things you 
> want to see.
> 
> Cross sections have been harder, but those are still “maps” in non-Earth 
> coordinates.  Again I’ve tended to build those with projections to a plane in 
> either a spreadsheet or by code.  This is not as easy to work with as plan 
> view so I am very interested in seeing the developing interest in getting a 
> drill hole section plugin for QGIS.  That will really finalize QGIS as the 
> logical choice for geological exploration work.
> 
> I’ve cc’ed the others I know using QGIS so I hope you can be included in the 
> list of interested users.
> 
> Regards,
> 
> John Harrop, PGeo, FGS
> Senior Project Geologist
> Coast Mountain Geological Ltd
> 
> PO Box 62
> Suite 488 - 625 Howe St
> Vancouver, BC   V6C 2T6
> 
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Re: [Qgis-user] Drill hole section with QGIS 3

[Stefan Giese (WhereGroup)]

The gis representation of a drill hole is normaly a point with some 
stratigraphic or lithological information of the underground behind it 
(a 1:n relation, 1 drill = n strata). In qgis2 there was the midvatten 
plugin which does such drill hole sections (see attached image).


hope this makes the drill hole thing a bit more clear...;-)

best regards
stefan
---
Mit freundlichen Grüßen
Stefan Giese
Projektleiter/Consultant
***
Treffen Sie uns auf der
FOSSGIS Konferenz 2018
21.-24. März 2018 in Bonn
https://fossgis-konferenz.de/2018/
***
WhereGroup GmbH & Co. KG
Schwimmbadstr. 2
79100 Freiburg
Germany

Fon: +49 (0)761 / 519 102 - 61
Fax: +49 (0)761 / 519 102 - 11

stefan.gi...@wheregroup.com
www.wheregroup.com
Amtsgericht Bonn, HRA 6788
---
Komplementärin:
WhereGroup Verwaltungs GmbH
vertreten durch:
Olaf Knopp, Peter Stamm
---

Am 2018-03-15 13:31, schrieb C Hamilton:

Pardon my ignorance on the matter, but what does a drill hole
capability mean? Is it simply making a hole in a polygon or is it much
more complex.

Thanks,

Calvin

On Wed, Mar 14, 2018 at 3:46 PM, John Harrop 
wrote:


It looks like no one has been answering this for you yet and I’m
just catching up on a few days emails after my computer was in the
shop.

There is active interest in developing a drill hole plugin for QGIS3
now that 3D is more fully supported.  I also work with drill holes
and have been running them in QGIS fairly easily in plan view where
I just calculate traces to a plan view (either in a spreadsheet or
using code) and apply theme patterns based on the attributes I kept
with the segments.  This has worked reasonable well with grade and
lithology which are two of the main things you want to see.

Cross sections have been harder, but those are still “maps” in
non-Earth coordinates.  Again I’ve tended to build those with
projections to a plane in either a spreadsheet or by code.  This is
not as easy to work with as plan view so I am very interested in
seeing the developing interest in getting a drill hole section
plugin for QGIS.  That will really finalize QGIS as the logical
choice for geological exploration work.

I’ve cc’ed the others I know using QGIS so I hope you can be
included in the list of interested users.

Regards,

John Harrop, PGeo, FGS
Senior Project Geologist
Coast Mountain Geological Ltd

PO Box 62
Suite 488 - 625 Howe St
Vancouver, BC   V6C 2T6

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Re: [Qgis-user] Drill hole section with QGIS 3

[C Hamilton]

Pardon my ignorance on the matter, but what does a drill hole capability
mean? Is it simply making a hole in a polygon or is it much more complex.

Thanks,

Calvin

On Wed, Mar 14, 2018 at 3:46 PM, John Harrop  wrote:

> It looks like no one has been answering this for you yet and I’m just
> catching up on a few days emails after my computer was in the shop.
>
> There is active interest in developing a drill hole plugin for QGIS3 now
> that 3D is more fully supported.  I also work with drill holes and have
> been running them in QGIS fairly easily in plan view where I just calculate
> traces to a plan view (either in a spreadsheet or using code) and apply
> theme patterns based on the attributes I kept with the segments.  This has
> worked reasonable well with grade and lithology which are two of the main
> things you want to see.
>
> Cross sections have been harder, but those are still “maps” in non-Earth
> coordinates.  Again I’ve tended to build those with projections to a plane
> in either a spreadsheet or by code.  This is not as easy to work with as
> plan view so I am very interested in seeing the developing interest in
> getting a drill hole section plugin for QGIS.  That will really finalize
> QGIS as the logical choice for geological exploration work.
>
> I’ve cc’ed the others I know using QGIS so I hope you can be included in
> the list of interested users.
>
> Regards,
>
> John Harrop, PGeo, FGS
> Senior Project Geologist
> Coast Mountain Geological Ltd
>
> PO Box 62
> Suite 488 - 625 Howe St
> Vancouver, BC   V6C 2T6
>
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Re: [Qgis-user] Drill hole section with QGIS 3

[Andrew Jeffrey]

Hi,

There was a post on the QGIS Australia mailing list today about QGIS 3D and
applications to Geology. While the post did not specifically address drill
hole sections, it mentioned that the QGIS 3D development does have potential
to address these challenges now.

The QGIS 3D crowd funding campaign is by Lutra Consulting and the link to
the campaign can be seen here 
https://www.lutraconsulting.co.uk/crowdfunding/more-qgis-3d/
  

Minimum contribution is a bit high IMO for individual users to get on board
(I may be wrong), but if you have an organisation or user group that can
contribute funds now is the time. I think the campaign expires tomorrow. If
unfunded it will not be developed.

Again - not saying this campaign solves the drill hole problem, but a few
geologists I know are excited about the QGIS emerging 3D capabilities and
this may be a way to progress them.

All the best
Andrew



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Re: [Qgis-user] Drill hole section with QGIS 3

[John Harrop]

It looks like no one has been answering this for you yet and I’m just catching 
up on a few days emails after my computer was in the shop.

There is active interest in developing a drill hole plugin for QGIS3 now that 
3D is more fully supported.  I also work with drill holes and have been running 
them in QGIS fairly easily in plan view where I just calculate traces to a plan 
view (either in a spreadsheet or using code) and apply theme patterns based on 
the attributes I kept with the segments.  This has worked reasonable well with 
grade and lithology which are two of the main things you want to see.

Cross sections have been harder, but those are still “maps” in non-Earth 
coordinates.  Again I’ve tended to build those with projections to a plane in 
either a spreadsheet or by code.  This is not as easy to work with as plan view 
so I am very interested in seeing the developing interest in getting a drill 
hole section plugin for QGIS.  That will really finalize QGIS as the logical 
choice for geological exploration work.

I’ve cc’ed the others I know using QGIS so I hope you can be included in the 
list of interested users.

Regards,

John Harrop, PGeo, FGS
Senior Project Geologist
Coast Mountain Geological Ltd

PO Box 62
Suite 488 - 625 Howe St
Vancouver, BC   V6C 2T6
Canada

jhar...@coastmountaingeo.com

> On Mar 12, 2018, at 11:49 PM, jean Lukusa  wrote:
> 
> Hi all, I would like  to know how I can  make drill hole section using QGIS 3
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[Qgis-user] Drill hole section with QGIS 3

[jean Lukusa]

Hi all, I would like  to know how I can  make drill hole section using QGIS
3
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