All Questions
11 questions
0
votes
0
answers
376
views
Rotate shapefile based on raster coordinates using Python
I have a shapefile with polygons and a raster file.
I know the coordinates of raster file corners and also the coordinates of shape file polygon files.
What I need to do, is rotate/transform the ...
- 600
3
votes
1
answer
754
views
Producing CartoPy map in UTM with North-East up
I'm currently trying to produce maps of a shoreline, which runs roughly from southeast to northwest in an UTM projection to visualize shoreline change.
By default, Cartopy maps are in north up. Is ...
- 53
1
vote
1
answer
832
views
Affine transformation: rescaling alters the raster bounds?
I'm trying to rotate a raster around its center coordinates, rescaling the resolution by a factor. I expect the transformation to conserve the center pivot. However; it seems that after the rotation ...
- 133
0
votes
1
answer
2k
views
Rotation of a spatial grid by an angle around a pivot with python gdal or rasterio
What I want to do:
I have been trying to:
Open a raster
Make a copy
Rotate the copy by an angle with the raster center as a pivot
Keep the resolution constant in x/y dimension
Solution 1 with gdal:
#...
- 133
5
votes
1
answer
5k
views
Rotating a set of points with an angle with rotation matrix: why is result "distorted"
What might be going wrong with my rotation of set of points as result look distorted? I have a set of points (X,Y). I calculate the mean (= "center of gravity") of them and subtract it from ...
- 405
2
votes
1
answer
4k
views
Rotating raster using Python [closed]
I am trying to rotate a DEM raster (NetCDF file) using Python language, but there is still no progress. I have tried GDAL Python but not so much information in the document about rotation. Do you know ...
- 77
0
votes
0
answers
123
views
Rotating point feature on line feature in ArcMap
I have a line and a point feature class in ArcMap. I want to rotate the point feature on the line feature. I will use the Symbol Rotate Option with a defined field. I have a script for Field ...
- 1
2
votes
1
answer
310
views
Moving rotated polygons horizontally to avoid overlap
To rotate rectangular polygons, I use the following (courtesy from this answer):
rotation = 50
vlayer = iface.activeLayer()
provider = vlayer.dataProvider()
couples_id_geom = []
for feature in vlayer....
- 565
2
votes
1
answer
2k
views
Converting Longitude range from (0,360) to (-180,180) in Python or by using gdal commands
I have a raster downloaded.
Visualising it in QGIS.
I want to correctly project it so that its extent varies with longitudes from -180 to 180 instead of 0 to 360.
gdalinfo filename.nc outputs the ...
- 285
2
votes
1
answer
2k
views
Flipping raster with Python
I am trying to calculate summary statistics for a raster file. I am encountering a problem when loading my raster into Python.
When I load the raster and I plot it, it is flipped 180 degrees. This ...
- 365
7
votes
1
answer
19k
views
Rotating the polygon about anchor point using Python script
I know there would be no tool in ArcPy module as such but might have in third party modules. I however tried taking the vertices of the polygon and moving using the below formula. But did not get the ...
- 71