Re: [Qgis-user] user defined format for new bearing tool?

[Richard Greenwood]

Wow, that's a serious set of tools! I'm working in small areas with
projected cartesian coordinates so geodesic distances with forward and back
azimuths is a bit more than I was looking for. Beyond DMS, I need bearings
in the quadrant format used in United States land description like the
diagram below. I've figured out the code to format the bearings for
labeling but my Python skills aren't yet strong enough to make an
interactive tool like yours.
[image: image.png]
Thanks,
Rich

On Wed, Nov 3, 2021 at 8:53 AM C Hamilton  wrote:

> Richard,
>
> The Shape Tools plugin has a geodesic measure tool
> 
> that in addition to distance, displays the bearing to and bearing from two
> points. Right now it just displays in decimal degrees, but it wouldn't be
> difficult to add a setting option to display in a DMS format. Give it a try
> and let me know whether you think it would be helpful to include a DMS
> format.
>
> Thanks,
>
> Calvin
>
> On Tue, Nov 2, 2021 at 9:56 AM Richard Greenwood <
> richard.greenw...@gmail.com> wrote:
>
>> Is it possible for a user to add a format to the new bearing tool in
>> 3.22? Cadastral descriptions in the United States are usually expressed in
>> degrees, minutes, seconds in four quadrants e.g.
>>   N 45°27'18"W or S 15°07'54"E, etc.
>> I have a SQL expression below that I use for labeling in that format. I
>> would like to add it as a format option in the bearing tool.
>> concat(
>>   case
>> when degrees(azimuth(start_point($geometry), end_point($geometry)))<
>> 90
>>   then CONCAT('N',to_dms(degrees(azimuth(start_point($geometry),
>> end_point($geometry))), 'x',0,'aligned'))
>> when degrees(azimuth(start_point($geometry), end_point($geometry)))<
>> 180
>>   then CONCAT('S', to_dms(180 -
>> degrees(azimuth(start_point($geometry), end_point($geometry))),
>> 'x',0,'aligned'))
>> when degrees(azimuth(start_point($geometry), end_point($geometry)))<
>> 270
>>   then CONCAT('S', to_dms(degrees(azimuth(start_point($geometry),
>> end_point($geometry))) -180, 'x',0), '°W')
>> else
>>   CONCAT('N', to_dms(360 - degrees(azimuth(start_point($geometry),
>> end_point($geometry))), 'x',0), 'W')
>>   end
>> )
>>
>> --
>> Richard W. Greenwood
>> www.greenwoodmap.com
>> ___
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>> Qgis-user@lists.osgeo.org
>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>

-- 
Richard W. Greenwood
www.greenwoodmap.com
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Re: [Qgis-user] Create new coverage

[Kirk Schmidt]

Hi Paddy:

The easiest approach would be to generate a new grid using the extents 
of your existing grid an defined at the 5 degree resolution.


Select Vector> Research Tools>Create Grid and follow the prompts.

Kirk Schmidt

On 11/3/2021 10:54 AM, Pat Brown wrote:

Hi,
  I have a shapefile which consists of a grid (polygons), each of 
which is 1 quarter degree in extent. I would like to create a second 
coverage where each polygon is again subdivided into smaller polygons, 
each being 5 degrees by 5 degrees in extent. Essentially each degree 
square would consist of 144 polygons.

 Appreciate any suggestions, thanks,

Paddy

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--
Kirk Schmidt, MScF, BScF, RPF
General Manager
Nortek Resource Solutions Inc.
26 Church Road
Sutherlands River, NS
B0K 1W0
Tel (902) 922.3607
Email:k...@nortekresources.com
Web:www.nortekresources.com
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Re: [Qgis-user] user defined format for new bearing tool?

[C Hamilton]

Richard,

The Shape Tools plugin has a geodesic measure tool

that in addition to distance, displays the bearing to and bearing from two
points. Right now it just displays in decimal degrees, but it wouldn't be
difficult to add a setting option to display in a DMS format. Give it a try
and let me know whether you think it would be helpful to include a DMS
format.

Thanks,

Calvin

On Tue, Nov 2, 2021 at 9:56 AM Richard Greenwood <
richard.greenw...@gmail.com> wrote:

> Is it possible for a user to add a format to the new bearing tool in 3.22?
> Cadastral descriptions in the United States are usually expressed in
> degrees, minutes, seconds in four quadrants e.g.
>   N 45°27'18"W or S 15°07'54"E, etc.
> I have a SQL expression below that I use for labeling in that format. I
> would like to add it as a format option in the bearing tool.
> concat(
>   case
> when degrees(azimuth(start_point($geometry), end_point($geometry)))< 90
>   then CONCAT('N',to_dms(degrees(azimuth(start_point($geometry),
> end_point($geometry))), 'x',0,'aligned'))
> when degrees(azimuth(start_point($geometry), end_point($geometry)))<
> 180
>   then CONCAT('S', to_dms(180 -
> degrees(azimuth(start_point($geometry), end_point($geometry))),
> 'x',0,'aligned'))
> when degrees(azimuth(start_point($geometry), end_point($geometry)))<
> 270
>   then CONCAT('S', to_dms(degrees(azimuth(start_point($geometry),
> end_point($geometry))) -180, 'x',0), '°W')
> else
>   CONCAT('N', to_dms(360 - degrees(azimuth(start_point($geometry),
> end_point($geometry))), 'x',0), 'W')
>   end
> )
>
> --
> Richard W. Greenwood
> www.greenwoodmap.com
> ___
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> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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[Qgis-user] Create new coverage

[Pat Brown]

Hi,
  I have a shapefile which consists of a grid (polygons), each of which is
1 quarter degree in extent. I would like to create a second coverage where
each polygon is again subdivided into smaller polygons, each being 5
degrees by 5 degrees in extent. Essentially each degree square would
consist of 144 polygons.
 Appreciate any suggestions, thanks,

Paddy
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Re: [Qgis-user] Batch Aerial Imagery GeoReferencing

[Kirk Schmidt]

Hi Richard:

It sounds like you are in the world of  manually georeferencing or ortho 
creation.   This would entail identifying ground control points for each 
image and processing.


Assuming you do not need all 6000 images at one time, you could tag each 
image to its central location and then ortho or geo it if it is needed.


Kirk

On 11/3/2021 7:45 AM, John Layt wrote:

Hi Richard,

The Historic England aerial photography team have been working on a 
similar sort of project which they recently released (see 
https://historicengland.org.uk/whats-new/news/new-virtual-aerial-map-allows-everyone-to-explore-englands-archaeology-from-the-air/). 
Perhaps they might be able to provide some advice on how they did it? 
There's an email address at 
https://historicengland.org.uk/research/methods/airborne-remote-sensing/.


Cheers!

John.


On Wed, 3 Nov 2021 at 10:27, Richard McDonnell 
 wrote:


Hi Kirk and Charles,

Thanks for your reply. This is what we know…

CAMERA:    Wild RC8 and RC10 152mm Focal Length.

ALTITUDE:    4,560m with Block Adjustments for
Mountainous areas

IMAGE OVERLAP: 60% along track 25% side lap and all
flight line Orientations East – West except for offshore.

Im afraid though that GPS just wasn’t a thing when these images
where captured. We have been looking at reverse geotagging the
Images, that is we know there location…ish and we can convert them
to jpegs with EXIF values assigned in theory.

Though the biggest issue is, in talking on the guys on the Open
Drone Mapper forum, our overlaps aren’t sufficient for SFM, so an
automated process will be out of the question.

Once again, thanks for getting back, if you can think of anything
else, please let me know.

Regards,


Richard


——
Richard McDonnell MSc GIS, FME Certified Professional
/FRM Data Management/

——
Oifig na nOibreacha Poiblí
Office of Public Works

Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36
Jonathan Swift Street, Trim, Co Meath, C15 NX36
——
M +353 87 688 5964 T +353 46 942 2409
https://gov.ie/opw

——
To send me files larger than 30MB, please use the link below
https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie

Email Disclaimer:
https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/


*From:*Qgis-user  *On Behalf Of
*Kirk Schmidt
*Sent:* 01 November 2021 12:59
*To:* qgis-user@lists.osgeo.org
*Subject:* Re: [Qgis-user] Batch Aerial Imagery GeoReferencing

Hi Richard:

You would require a couple of things:

1) Camera interior orientation which would include the lens
calibration

2) exterior orientation which would include precise coordinate at
time of exposure as well as the pitch, roll and yaw of the camera.

3) the offsets from the camera film or sensor center to the center
of the aircraft gps antenna.

4) an accurate DEM or your target area

If you have the above data, you can autoreference your images.

If the images have a high endlap and sidelap, you could use
commercial software such as Pix4D or  Global Mapper to
orthorectify the images based on structure from motion.  Check
into drone orthorectification software.

Kirk

On 10/29/2021 9:13 AM, Richard McDonnell wrote:

Afternoon all,

I have access to over 6000 Aerial Images covering Ireland, we
also have scans of the Flight Paths and Image Orientation and
Extents (Scans from Paper Maps)

What I was wondering is if there is a way to Batch
Georeference all of these Images?

Any Ideas, help, guidance welcome. I have thought about maybe
even reverse engineering the Flight Plan, then using
OpenDroneMap to georeference the Images.

Regards & Thanks,

Richard McDonnell

*
——*
*Richard McDonnell MSc GIS, FME Certified Professional*
/FRM Data Management/

——
*Oifig na nOibreacha Poiblí*
Office of Public Works

*Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36 *
Jonathan Swift Street, Trim, Co Meath, C15 NX36
——
M +353 87 688 5964 T +353 46 942 2409
https://gov.ie/opw 

——
To send me files larger than 30MB, please use the link below
https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie


Email Disclaimer:
https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/





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Re: [Qgis-user] Batch Aerial Imagery GeoReferencing

[John Layt]

Hi Richard,

The Historic England aerial photography team have been working on a
similar sort of project which they recently released (see
https://historicengland.org.uk/whats-new/news/new-virtual-aerial-map-allows-everyone-to-explore-englands-archaeology-from-the-air/).
Perhaps they might be able to provide some advice on how they did it?
There's an email address at
https://historicengland.org.uk/research/methods/airborne-remote-sensing/.

Cheers!

John.


On Wed, 3 Nov 2021 at 10:27, Richard McDonnell 
wrote:

> Hi Kirk and Charles,
>
> Thanks for your reply. This is what we know…
>
>
>
> CAMERA:Wild RC8 and RC10 152mm Focal Length.
>
> ALTITUDE:  4,560m with Block Adjustments for
> Mountainous areas
>
> IMAGE OVERLAP: 60% along track 25% side lap and all flight
> line Orientations East – West except for offshore.
>
>
>
> Im afraid though that GPS just wasn’t a thing when these images where
> captured. We have been looking at reverse geotagging the Images, that is we
> know there location…ish and we can convert them to jpegs with EXIF values
> assigned in theory.
>
> Though the biggest issue is, in talking on the guys on the Open Drone
> Mapper forum, our overlaps aren’t sufficient for SFM, so an automated
> process will be out of the question.
>
> Once again, thanks for getting back, if you can think of anything else,
> please let me know.
>
> Regards,
>
>
> Richard
>
>
>
> ——
> Richard McDonnell MSc GIS, FME Certified Professional
> *FRM Data Management*
>
> ——
> Oifig na nOibreacha Poiblí
> Office of Public Works
>
> Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36
> Jonathan Swift Street, Trim, Co Meath, C15 NX36
> ——
> M +353 87 688 5964 T +353 46 942 2409
> https://gov.ie/opw
>
> ——
> To send me files larger than 30MB, please use the link below
> https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie
>
> Email Disclaimer:
> https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/
>
> *From:* Qgis-user  *On Behalf Of *Kirk
> Schmidt
> *Sent:* 01 November 2021 12:59
> *To:* qgis-user@lists.osgeo.org
> *Subject:* Re: [Qgis-user] Batch Aerial Imagery GeoReferencing
>
>
>
> Hi Richard:
>
> You would require a couple of things:
>
> 1) Camera interior orientation which would include the lens calibration
>
> 2) exterior orientation which would include precise coordinate at time of
> exposure as well as the pitch, roll and yaw of the camera.
>
> 3) the offsets from the camera film or sensor center to the center of the
> aircraft gps antenna.
>
> 4) an accurate DEM or your target area
>
> If you have the above data, you can autoreference your images.
>
> If the images have a high endlap and sidelap, you could use commercial
> software such as Pix4D or  Global Mapper to orthorectify the images based
> on structure from motion.  Check into drone orthorectification software.
>
> Kirk
>
>
>
>
>
> On 10/29/2021 9:13 AM, Richard McDonnell wrote:
>
> Afternoon all,
>
> I have access to over 6000 Aerial Images covering Ireland, we also have
> scans of the Flight Paths and Image Orientation and Extents (Scans from
> Paper Maps)
>
> What I was wondering is if there is a way to Batch Georeference all of
> these Images?
>
> Any Ideas, help, guidance welcome. I have thought about maybe even reverse
> engineering the Flight Plan, then using OpenDroneMap to georeference the
> Images.
>
> Regards & Thanks,
>
>
>
> Richard McDonnell
>
>
> * ——*
> *Richard McDonnell MSc GIS, FME Certified Professional*
> *FRM Data Management*
>
> ——
> *Oifig na nOibreacha Poiblí*
> Office of Public Works
>
> *Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36 *
> Jonathan Swift Street, Trim, Co Meath, C15 NX36
> ——
> M +353 87 688 5964 T +353 46 942 2409
> https://gov.ie/opw
>
> ——
> To send me files larger than 30MB, please use the link below
> https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie
>
> Email Disclaimer:
> https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/
>
>
>
> ___
>
> 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
>
> --
>
> Kirk Schmidt, MScF, BScF, RPF
>
> General Manager
>
> Nortek Resource Solutions Inc.
>
> 26 Church Road
>
> Sutherlands River, NS
>
> B0K 1W0
>
> Tel (902) 922.3607
>
> Email: k...@nortekresources.com
>
> Web: www.nortekresources.com
>
> ___
> Qgis-user mailing list
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> 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] Batch Aerial Imagery GeoReferencing

[Richard McDonnell]

Hi Kirk and Charles,
Thanks for your reply. This is what we know…

CAMERA:Wild RC8 and RC10 152mm Focal Length.
ALTITUDE:  4,560m with Block Adjustments for 
Mountainous areas
IMAGE OVERLAP: 60% along track 25% side lap and all flight line 
Orientations East – West except for offshore.

Im afraid though that GPS just wasn’t a thing when these images where captured. 
We have been looking at reverse geotagging the Images, that is we know there 
location…ish and we can convert them to jpegs with EXIF values assigned in 
theory.
Though the biggest issue is, in talking on the guys on the Open Drone Mapper 
forum, our overlaps aren’t sufficient for SFM, so an automated process will be 
out of the question.
Once again, thanks for getting back, if you can think of anything else, please 
let me know.
Regards,

Richard


——
Richard McDonnell MSc GIS, FME Certified Professional
FRM Data Management

——
Oifig na nOibreacha Poiblí
Office of Public Works

Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36
Jonathan Swift Street, Trim, Co Meath, C15 NX36
——
M +353 87 688 5964 T +353 46 942 2409
https://gov.ie/opw

——
To send me files larger than 30MB, please use the link below 
https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie

Email Disclaimer: 
https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/
From: Qgis-user  On Behalf Of Kirk Schmidt
Sent: 01 November 2021 12:59
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] Batch Aerial Imagery GeoReferencing


Hi Richard:

You would require a couple of things:

1) Camera interior orientation which would include the lens calibration

2) exterior orientation which would include precise coordinate at time of 
exposure as well as the pitch, roll and yaw of the camera.

3) the offsets from the camera film or sensor center to the center of the 
aircraft gps antenna.

4) an accurate DEM or your target area

If you have the above data, you can autoreference your images.

If the images have a high endlap and sidelap, you could use commercial software 
such as Pix4D or  Global Mapper to orthorectify the images based on structure 
from motion.  Check into drone orthorectification software.

Kirk




On 10/29/2021 9:13 AM, Richard McDonnell wrote:
Afternoon all,
I have access to over 6000 Aerial Images covering Ireland, we also have scans 
of the Flight Paths and Image Orientation and Extents (Scans from Paper Maps)
What I was wondering is if there is a way to Batch Georeference all of these 
Images?
Any Ideas, help, guidance welcome. I have thought about maybe even reverse 
engineering the Flight Plan, then using OpenDroneMap to georeference the Images.
Regards & Thanks,

Richard McDonnell

——
Richard McDonnell MSc GIS, FME Certified Professional
FRM Data Management

——
Oifig na nOibreacha Poiblí
Office of Public Works

Sráid Jonathan Swift, Baile Átha Troim, Co na Mí, C15 NX36
Jonathan Swift Street, Trim, Co Meath, C15 NX36
——
M +353 87 688 5964 T +353 46 942 2409
https://gov.ie/opw

——
To send me files larger than 30MB, please use the link below 
https://filetransfer.opw.ie/filedrop/richard.mcdonn...@opw.ie

Email Disclaimer: 
https://www.gov.ie/en/organisation-information/439daf-email-disclaimer/




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--

Kirk Schmidt, MScF, BScF, RPF

General Manager

Nortek Resource Solutions Inc.

26 Church Road

Sutherlands River, NS

B0K 1W0

Tel (902) 922.3607

Email: k...@nortekresources.com

Web: www.nortekresources.com
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