Re: [Qgis-user] Unable to find the write projection to make my map layers line up

[Mike Hyslop via QGIS-User]

Hi Matt

I don't routinely work in California, but I think

   - *NAD83(2011) / California zone 3 (ftUS) (EPSG: 6420)*

 is the correct projection to use. See https://epsg.io/6420 for additional
details.

Best,
Mike

On Tue, May 30, 2023 at 4:00 PM Matthew Hartzell via QGIS-User <
qgis-user@lists.osgeo.org> wrote:

> Hello everybody,
>
> This is my first time using this forum/mailing list. Please forgive me if
> I'm doing anything wrong...
>
> *QGIS version:* 3.12
> *OS: *Mac 12.1
>
> *Problem:*
> I am trying to project a map containing parcel boundaries (vector) and
> orthoimagery (raster) to match the projection used by a set of engineering
> drawings so that I can line my map layers up to match the engineering
> drawings.
>
> The engineer who made the engineering drawings told me that the projection
> she used was:
>
>- *NAD83 (NSRS2011), CA State Plane Zone III, U.S. Survey Feet*
>
>
> I cannot find this precise projection in QGIS’s list of projections.
> However, I tried the following projections, and none of them worked (that
> is, none of them projected my map layers in a way that lines up with the
> engineering drawings as expected):
>
>- *NAD83 / California zone 3 (EPSG: 26943)*
>- *NAD83 / California zone 3 (ftUS) (EPSG: 2227)*
>- *NAD83(2011) / California zone 3 (EPSG: 6419)*
>- *NAD83(2011) / California zone 3 (ftUS) (EPSG: 6420)*
>- *NAD83(HARN) / California zone 3 (EPSG: 2768)*
>- *NAD83(HARN) / California zone 3 (ftUS) (EPSG: 2872)*
>- *NAD83(NSRS2007) / California zone 3 (EPSG: 3493)*
>- *NAD83(NSRS2007) / California zone 3 (ftUS) (EPSG: 3494)*
>- *NAD_1983_HARN_StatePlane_California_III_FIPS_0403 (EPSG: 102243)*
>- *NAD_1983_StatePlane_California_III_FIPS_0403_Feet (EPSG: 102643)*
>
>
> What am I doing wrong?
>
> Which projection should I be using in QGIS so that my map layers line up
> with the projection “NAD83 (NSRS2011), CA State Plane Zone III, U.S. Survey
> Feet”?
>
> Thank you
>
> Matt
>
>
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Re: [Qgis-user] multiple csv file import

[Mike Hyslop via Qgis-user]

This has been covered in StackExchange:
https://gis.stackexchange.com/questions/276590/bulk-csv-to-shapefile-using-ogr2ogr

Determine the correct ogr2ogr syntax for processing one of your .csv files.
If on Windows, issue the command *ls *.csv > files.txt*This will 'list'
all of your csv files but will save them to a text file named *files.txt*.
You can then use Excel to clone your correct command syntax while changing
the input (drawn from files.txt) and output filenames (these can also be
taken from the input filenames). Save the excel sheet as a text file and
feed it to ogr2ogr - it will process each line sequentially until all files
have been converted.

Best,
Mike

On Tue, Nov 15, 2022 at 2:58 PM Hugh Kelley via Qgis-user <
qgis-user@lists.osgeo.org> wrote:

> David, this was my first thought when i saw this question as well.
>
> however, I didn't look for very long but I haven't seen a way to tell
> ogr2ogr to read columns in a csv as the lat/lon and write those as points
> to the shapefile.  I generally write a csv to postgres as a non-spatial
> table and then process the lat lon columns with postgis.
>
>  Are there arguments for ogr2ogr that can do this?
>
> On Tue, Nov 15, 2022 at 12:30 PM David Strip via Qgis-user <
> qgis-user@lists.osgeo.org> wrote:
>
>> You might consider ogr2ogr as an alternative approach. You can run this
>> from the command line allowing you to use shell scripts to iterate through
>> all your .csv files. There are also python bindings for ogr2ogr if you're
>> more comfortable with python than shell scripts.
>>
>> On 11/15/2022 9:59 AM, Salvatore Mellino via Qgis-user wrote:
>>
>> Hello,
>>
>> thank you for your answer. I have many csv (about 100), so I need an
>> automatic procedure. Maybe a python script...
>>
>> Il 15/11/2022 16:55, Nicolas Cadieux ha scritto:
>>
>> Hi,
>>
>> Yes, you can do that very easily using QGIS.  Layer/add layer/add
>> delimited text layer.  Then just export the layer in the format of your
>> choice. You may need to convert the coordinates in decimal degrees (ex 75
>> 05 30.4 -> 75.0917800 ).
>>
>> You can do this in Excel using =(A6)+(B6/60)+(C6/3600)+(D6/3600) A= Deg,
>> B= Min, C=Sec, D= Decimal Sec.  Then export to csv.
>>
>> Nicolas
>>
>>
>> On 2022-11-15 10:08 a.m., Salvatore Mellino via Qgis-user wrote:
>>
>> Hello,
>>
>> I would like to know if it is possible to import multiple csv files
>> contained in a folder and to convert them in shapefiles (1 for each csv).
>> All csv files are structured as "lat long value" separate by space and
>> without any header line.
>>
>> Thank you for your help! Regards,
>>
>> Salvatore
>>
>>
>>
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>
>
> --
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>
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Re: [Qgis-user] How to identify UTM zone

[Mike Hyslop]

Hi Jean,

You cannot determine the UTM zone from a coordinate pair, as UTM
coordinates repeat across the 60 world zones. Can you ask the collaborator
for a local reference / an approximate location for the coordinates?  You
could then determine the zone by using a layer such as this:
https://apps.gis.ucla.edu/geodata/dataset/world_utm_zones/resource/fc8af8e2-0818-4f50-baf0-2cc04cbaa541

Best,
Mike

On Mon, May 24, 2021 at 8:31 AM jean Lukusa  wrote:

> Hi all.
> Someone(a non-scientist ) has sent me a point coordinates in UTM
> So I want to know how to identify its UTM zone.
>
> X 551000
> Y 8733000
>
> Jean Lukusa
> B.Sc. Geology
> Trained on Jorc  Code
> GIS  Operator
> +243812156128
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Re: [Qgis-user] wishing for accurate lattitude/longitude from a cell phone

[Mike Hyslop]

If you don't want to attempt to engineer your own GNSS hardware + software,
you may want to check out the Bad Elf GNSS Surveyor. Yes, it's in the
neighborhood of $500 US, but gives relatively consistent positions within
about 1 meter with averaging, its data can be differentially
corrected using the RTKLIB open-source software, and if you are working in
an area with cell service, it can receive real-time corrections via NTRIP
networks if this is available in your area (it is here in Michigan). Some
Googling will turn up tutorials. I have done some simple comparisons with
Trimble hardware and have been pleased with the results.

Best,
Mike

On Sat, May 23, 2020 at 3:45 PM  wrote:

> Hi Nicolas,
>
> there are several potentially accurate GNSS modules available, even
> sensitive choke ring antennas aren't that expensive. What's time consuming
> and difficult is building a whole functioning system (integration and
> software).
> This would be a great university project - develop an open source GNSS
> system based on relatively unexpensive components. It should be possible to
> get the cost down from over a thousand to several hundred euro. This could
> also be the basis for a "free" correction data service built on private
> reference stations. Just dreaming...
>
> I agree that for precision, "old school" technology is often better and
> cheaper, although it requires more effort than simply pushing a button.
>
> Regards
> Jochen
>
> Am 23.05.20 um 20:21 schrieb Nicolas Cadieux:
>
> Hi,
>
> I looked at the page.It looks like a neat project!  Buy time you buy a
> case, antenna... (I don’t think they come with on), your back into the
> price range of a forestry grade survey GPS unit.  I think the Emild single
> band gps (https://emlid.com/reachrs/  ) is
> probably a better choice unless you really want to make this a learning
> project. But if I understand you are really on a shoe string budget.
>
> None of these Gps, by the way, would beat and old theodolite...  if you
> can establish or find a good gps position (look for the city or state
> geomatics services) or survey point,  a théodolite would give you survey
> grade positions.  City have these points on every few blocks.  You may be
> able to find A theodolite for free.  A second hand TotalStation could be
> better but that will be more difficult to find in those price ranges (Shoe
> string).  You can also rent equipment or find a college that would take
> this up as a teaching opportunity.
>
> Have fun!
>
> Nicolas Cadieux
> Ça va bien aller!
>
> Le 23 mai 2020 à 13:52, Bernd Vogelgesang 
>  a écrit :
>
> 
>
> Unfortunately, the Forest Service Website went offline (maybe this thread
> caused so much traffic that it broke down? ;) )
>
> I'm also desperately searching for an affordable way to have at least some
> decent accuracy. I do not need submeter, but it would be fantastic if it
> was possible to achieve meter accuracy.
> I gave up on that Garmin stuff. They might be accurate, but I have no
> chance to control this until I return home and put the recorded data on
> screen over an aerial image. Those screens are a joke, and the business
> logic that prevents me to put reasonable aerial imagery on the device
> without paying a fortune is apita. Maybe this improved cause I last checked
> 5 years ago.
>
> Mobile phones at least in my case seem to get worse. My Motorola from 2016
> had an accuracy of less than 4 meters, most of the time less than 2.
> Now I bought a Huawei 30 pro cause of the camera (my first phone with nice
> pictures!), but the accuracy is a nightmare. The position is jumping around
> like a dog on rabies.
> I also bought a bluetooth device (Navilock BT-821G) two years ago. This is
> much better than the phones GPS, tho it only receives 20 satellites maximum
> (The phone claims to receive some 40). But also this device sometimes, when
> walking a transect, is constantly 5 meters off the track for several
> several minutes.
>
> As apps averaging the positions were mentioned: Does anyone have a
> recommendation on such apps (for Android)? I found some, but the usability
> was not that great, and some even didn't enhance anything.
>
> Furthermore, I stumble upon an article about a module with u-blox chip.
> https://www.sparkfun.com/products/16481
> Does anyone have any experience with modules like this and what else is
> needed? The description of all the stuff leaves me a bit puzzled.
>
> Cheers,
>
> Bernd
> On 23.05.20 18:17, Michael.Dodd wrote:
>
>
> https://besjournals.onlinelibrary.wiley.com/doi/full/10./j.2041-210X.2011.00118.x
> I did this quite a few years ago but in the graph in supplimentary material
> it shows how the accuracy of one consumer grade gps varies over time (at a
> fixed point). At the time I also did a lot more measurements using mobile
> phones and consumer grade units on a grid of points in the field, that was
> not published but basically the phones were often as good as if not 

Re: [Qgis-user] problems MAC and ecw raster files

[Mike Hyslop]

Hi,

this process is outlined on the developer's web site:
https://www.kyngchaos.com/software/frameworks/

Look for the section titled "GDAL Plugins" and find the corresponding
plugin for your version of GDAL.

Best,
Mike

On Thu, Mar 21, 2019 at 10:24 AM Antongeo76  wrote:

> Azzurra Lentini-2 wrote
> > Dear all in my Qgis 2.18 installed in my computer Mac I can not open
> > the raster file with extension .ecw
> > What can I do? is it normal?
> > In my pc windows I can open without any problem.
> >
> > Thank you Azzurra.
> >
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> > Qgis-user@.osgeo
>
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>
> Hi Azzurra,
> for unix based sistems you need to local build ECW SDK to allow GDAL (QGIS)
> to read ECW raster
>
> Cheers
>
> Antonio
>
>
>
> -
> Antonio
> --
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Re: [Qgis-user] Plugins repository unavailable for 2.18?

[Mike Hyslop]

And I see this error:

XML Parsing Error: not well-formed
Location: https://plugins.qgis.org/plugins/plugins.xml/?qgis=2.18
Line Number 6817, Column 553:
--

On Fri, May 25, 2018 at 2:07 PM 0x906  wrote:

> This comes up empty (blank page) for me.
>
>
> > On May 25, 2018, at 1:58 PM, Richard Duivenvoorde 
> wrote:
> >
> > On 25-05-18 18:41, Fielding, Eric J (329A) wrote:
> >> Hello,
> >>
> >> Has something changed about the plugins repository for version 2.18? I
> >> have not yet upgraded to version 3.x, and sometime in the last month or
> >> so the plugins repository
> >> (https://plugins.qgis.org/plugins/plugins.xml/?qgis=2.18) has stopped
> >> working for me.
> >
> > Nope, nothing changed. We have had a one-time hickup in the service in
> > last days. But those files are now (double) cached: by ourselves and by
> > Cloudflare.
> >
> > IF it fails can you then check in a browser if
> > https://plugins.qgis.org/plugins/plugins.xml/?qgis=2.18
> > also fails and let us know?
> >
> > Regards,
> >
> > Richard Duivenvoorde
> >
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Re: [Qgis-user] QGIS 3 OS X/macOS

[Mike Hyslop]

There is a “download archive” link on the left under Software Menu. You can
find the 2.18 installer there.

Best,
Mike

On Thu, Mar 15, 2018 at 4:48 PM, Etienne Trimaille <
etienne.trimai...@gmail.com> wrote:

> Thanks a lot William for this work! Very very appreciated!
>
> BTW, I noticed you removed the QGIS 2 installer from the webpage:
> http://www.kyngchaos.com/software/qgis
> QGIS 2 is maintained until January 2019, can you put back at least the
> QGIS 2.18.15 so users can download it again? Thanks.
> https://qgis.org/en/site/getinvolved/development/
> roadmap.html#release-schedule
>
> Regards,
> Etienne
>
> 2018-03-15 2:06 GMT+01:00 David Fawcett :
>
>> Thank you William! You provide a very valuable services for all of us who
>> do GIS on a Mac.
>>
>> David.
>>
>> On Tue, Mar 13, 2018 at 9:21 PM, Madry, Scott 
>> wrote:
>>
>>> Scott Madry
>>>
>>> and just FYI, I had to load matplotlib and scipy to get the Semi
>>> Automatic Classification plugin to work.
>>>
>>> S
>>> > On Mar 12, 2018, at 7:31 PM, Nyall Dawson 
>>> wrote:
>>> >
>>> > On 13 March 2018 at 04:29, William Kyngesburye 
>>> wrote:
>>> >> Sorry for the long wait.  It's been a hectic year - personal life
>>> changes (marriage), but I'm finally getting back into gear.
>>> >>
>>> >> My QGIS 3 package for OS X/macOS is ready.
>>> >
>>> > Champion! I'm sure you've made a lot of people very happy with this
>>> > announcement.
>>> >
>>> > For those who know what you do, your work is very much valued! It's a
>>> > shame that packaging is somewhat underappreciated and under-supported
>>> > by the wider QGIS user community :(
>>> >
>>> > Nyall
>>> >
>>> >
>>> >  Besides the big QGIS release, there are a couple other big changes
>>> > in the packaging.
>>> >>
>>> >> - Minimum OS X 10.10 Yosemite
>>> >>
>>> >> - Requires Python 3.6 from python.org (note it must be this and not
>>> homebrew or other distribution).
>>> >>
>>> >> - except for what I include in the GDAL Complete package, all extra
>>> necessary python modules are available from pypi with pip.  These are
>>> installed by the QGIS installer and need an internet connection at that
>>> time.
>>> >>
>>> >> Make sure to install Python 3 first, otherwise the GDAL Complete
>>> python components will not be installed (these are also required by QGIS).
>>> >>
>>> >> Currently the globe plugin is not included, but I'll get that out in
>>> an update soon.  The new QGIS 3D features are included.
>>> >>
>>> >> GDAL format plugins will follow soon (ECW, MrSID, GRASS).
>>> >>
>>> >> -
>>> >> William Kyngesburye 
>>> >> http://www.kyngchaos.com/
>>> >>
>>> >> The equator is so long, it could encircle the earth completely once.
>>> >>
>>> >> ___
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>>
>>
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Re: [Qgis-user] QGIS 3 OS X/macOS

[Mike Hyslop]

I have to second what Nyall said. Thanks to William for all the work
packaging QGIS.

Some feedback: installation was straightforward and painless. It took less
than 15 minutes start to finish to upgrade to QGIS 3, and I still have
access to python 2 and 3, plus QGIS 2.18 and 3.0. Kudos and thanks!

Mike

On Mon, Mar 12, 2018 at 7:31 PM, Nyall Dawson 
wrote:

> On 13 March 2018 at 04:29, William Kyngesburye 
> wrote:
> > Sorry for the long wait.  It's been a hectic year - personal life
> changes (marriage), but I'm finally getting back into gear.
> >
> > My QGIS 3 package for OS X/macOS is ready.
>
> Champion! I'm sure you've made a lot of people very happy with this
> announcement.
>
> For those who know what you do, your work is very much valued! It's a
> shame that packaging is somewhat underappreciated and under-supported
> by the wider QGIS user community :(
>
> Nyall
>
>
>   Besides the big QGIS release, there are a couple other big changes
> in the packaging.
> >
> > - Minimum OS X 10.10 Yosemite
> >
> > - Requires Python 3.6 from python.org (note it must be this and not
> homebrew or other distribution).
> >
> > - except for what I include in the GDAL Complete package, all extra
> necessary python modules are available from pypi with pip.  These are
> installed by the QGIS installer and need an internet connection at that
> time.
> >
> > Make sure to install Python 3 first, otherwise the GDAL Complete python
> components will not be installed (these are also required by QGIS).
> >
> > Currently the globe plugin is not included, but I'll get that out in an
> update soon.  The new QGIS 3D features are included.
> >
> > GDAL format plugins will follow soon (ECW, MrSID, GRASS).
> >
> > -
> > William Kyngesburye 
> > http://www.kyngchaos.com/
> >
> > The equator is so long, it could encircle the earth completely once.
> >
> > ___
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Re: [Qgis-user] Version of GDAL used for the windows binary on qgis site

[Mike Hyslop]

The version of GDAL installed with QGIS 2.18.3 is 2.12  <-- this is for the
64-bit OSGEO4W version.


Best,
Mike


On Thu, Jan 26, 2017 at 2:27 PM, Mike  wrote:

> Not in a restricted environment, where I need the IT staff to do that. I
> was hoping to tell them which one to use. I'm looking to avoid a bug in
> GDAL 2.1.1. so 2.1.0 or 2.1.2 works.
>
> Does anyone have 2.18.3 installed from osgeo and can report that?
>
>
>
> On Jan 26, 2017 12:01 PM, "Michael Treglia"  wrote:
>
>> If installing on Windows, you can use the OSGeo4W installer (
>> https://trac.osgeo.org/osgeo4w/) - and if you choose the advanced
>> option, you can identify (and have some control over) which versions of
>> gdal and other items get installed. (here's the QGIS page on the OSGeo4W
>> installer: https://www.qgis.org/en/site/forusers/alldownloads.html)
>>
>> hope that helps!
>> Mike
>>
>> On Thu, Jan 26, 2017 at 1:54 PM, Mike  wrote:
>>
>>> Right, that's exactly the info I'm looking for, but I'm trying to get
>>> that info before installing it.
>>>
>>> Any ideas how to find that?
>>>
>>>
>>>
>>> On Jan 26, 2017 11:26 AM, "Michael Treglia"  wrote:
>>>
 If you have QGIS installed and open, go to Help -> About, and it'll
 show those details.
 Hope that helps,
 mike t

 On Thu, Jan 26, 2017 at 1:05 PM, Mike  wrote:

> I'm looking at QGIS 2.18.3, but am trying to find the version of GDAL
> used for this. Where can I find it?
>
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>>
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Re: [Qgis-user] Calculating acreage in 2.2

[Mike Hyslop]

Randy,

I'm getting different results from both you  Raul. Win 7 enterprise, 64
bit. OSGeo4W install of QGIS 2.2. EPSG 2274.

I took the additional steps of creating an area field (from $area) and two
acres fields: one acres calculated from $area / 43560 and one from the area
field / 43560. The two acreage fields are = but values are different than
either of you: 209 acres for the cutover field.

https://www.dropbox.com/s/oxilz8hn6a5phhx/Screenshot%202014-02-27%2016.20.55.png
https://www.dropbox.com/s/n5my6zhldh7d1rx/Screenshot%202014-02-27%2016.20.19.png

Weird...


Mike


On Thu, Feb 27, 2014 at 3:49 PM, RNanclares raulnancla...@gmail.com wrote:

 http://osgeo-org.1560.x6.nabble.com/file/n5106474/acres.jpg

 This is what i got right now using your dataset and the same procedure
 you're using to calculate acreage. Windows 7 Ultimate 64 bits. QGIS 2.2
 installed via Osgeo4W 32 bits.

 Cheers.



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 View this message in context:
 http://osgeo-org.1560.x6.nabble.com/Calculating-acreage-in-2-2-tp5106417p5106474.html
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Re: [Qgis-user] Calculating acreage in 2.2

[Mike Hyslop]

Aaand I just tried again on a clean copy of the data. Same procedure. Same
results as you (19.53011 acres). No idea why I got 209 acres last time, but
the two copies of the shapefile appear identical.

Something is rotten in Denmark (oops. Michigan). Must be time to go home...

Mike



On Thu, Feb 27, 2014 at 4:26 PM, Mike Hyslop mdhys...@mtu.edu wrote:

 Randy,

 I'm getting different results from both you  Raul. Win 7 enterprise, 64
 bit. OSGeo4W install of QGIS 2.2. EPSG 2274.

 I took the additional steps of creating an area field (from $area) and two
 acres fields: one acres calculated from $area / 43560 and one from the area
 field / 43560. The two acreage fields are = but values are different than
 either of you: 209 acres for the cutover field.


 https://www.dropbox.com/s/oxilz8hn6a5phhx/Screenshot%202014-02-27%2016.20.55.png

 https://www.dropbox.com/s/n5my6zhldh7d1rx/Screenshot%202014-02-27%2016.20.19.png

 Weird...


 Mike



 On Thu, Feb 27, 2014 at 3:49 PM, RNanclares raulnancla...@gmail.comwrote:

 http://osgeo-org.1560.x6.nabble.com/file/n5106474/acres.jpg

 This is what i got right now using your dataset and the same procedure
 you're using to calculate acreage. Windows 7 Ultimate 64 bits. QGIS 2.2
 installed via Osgeo4W 32 bits.

 Cheers.



 --
 View this message in context:
 http://osgeo-org.1560.x6.nabble.com/Calculating-acreage-in-2-2-tp5106417p5106474.html
 Sent from the Quantum GIS - User mailing list archive at Nabble.com.
 ___
 Qgis-user mailing list
 Qgis-user@lists.osgeo.org
 http://lists.osgeo.org/mailman/listinfo/qgis-user



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