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Results tagged with qgis
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user 155987
QGIS is a cross-platform GIS application licensed under the GNU General Public License.
1
vote
0
answers
316
views
Multiple themes in QGIS defaulting to first theme
I've been trying to use the themes options in QGIS.
In the window mode they work just quite well and layer format changes. … I suspect it's a bug in QGIS - I'm using Version 3.10. …
- 551
2
votes
Showing arrowheads in line end using QGIS?
This is a bit late but in QGIS 3.10 you can multiple symbols for the same layer. …
- 551
1
vote
Adding TauDEM provider to QGIS 3?
The location that you need to change "processing_taudem" is in
C:\Users\"your user name"\AppData\Roaming\QGIS\QGIS3\profiles\default\python\plugins
Here there will be a folder called "processing-taudem-master …
- 551
8
votes
2
answers
3k
views
Define custom CRS in WKT from point and angle
117.58908484003899],
PARAMETER["azimuth",-18.39841101],
PARAMETER["scale_factor",0.999585495],
PARAMETER["false_easting",0],
PARAMETER["false_northing",0],
UNIT["Meter",1]]
I then paste the code into QGIS … When I apply this custom CRS to a polygon layer in QGIS the polygon appears about 2km away from the actual location.
Can anyone offer any advice on how to achieve more accuracy? …
- 551
2
votes
1
answer
552
views
Define custom projection in QGIS from some control points
I have six control points in a local mine grid which I want to use to define a custom projection in QGIS. … The reference points are in GDA94 / MGA zone 50 (EPSG:28350) (https://spatialreference.org/ref/epsg/gda94-mga-zone-50/)
Is there a way to do this in QGIS? …
- 551
5
votes
Define custom CRS in WKT from point and angle
Update - See python script below for an answer
Original String (Red)
+proj=omerc +lat_0=-23.2583926082939 +lonc=117.589084840039 +alpha=-0 +gamma=0 +k=0.999585495 +x_0=0 +y_0=0 +ellps=GRS80 +units=m …
- 551
3
votes
2
answers
3k
views
Elevation and Volume relationship curve in QGIS
What I'm trying to do is something like this:
How To Calculate Surface/Cut Volume QGIS - Advanced
However this process is time consuming especially with RL's small resolutions (0.1 m)
There are some …
- 551
3
votes
0
answers
248
views
Exporting PDF with more image compression options
software there are more algorithms to reduce the file size, below is an example from Foxit PDF (also free):
I have a few questions:
Is it possible to add additional options to compress the image to the QGIS …
- 551
2
votes
1
answer
520
views
QGIS Custom Projection in WKT not saving .prj file
It works well in QGIS to look at objects in local grid but when I save any object in the local grid system the shape files do not save any .prj file with it. … My questions are:
Why isn't QGIS saving the .prj file?
Is there any way to make QGIS save the .prj file?
Is there anyway to convert the WKT format into a .prj file? …
- 551
6
votes
2
answers
741
views
Getting text name of current project CRS in QGIS Layout
I'm want to display the current project projection in a QGIS layout. … Right now I can get QGIS to display the current EPSG number like below:
But what I want to do is get QGIS layout to print the ESPG name as well like below with an expression: …
- 551