Questions tagged [transform]
The transform tag has no usage guidance.
11
questions
1
vote
1answer
23 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 ...
0
votes
0answers
10 views
Orientation Conversion: ECEF YPR (321) to LTP Tait-Bryan angles
I am looking for guidance to convert ECEF orientation (Yaw/Pitch/Roll 3-2-1) to the corresponding LTP (NED/ENU) Tait-Bryan angles.
There are several excellent resources to convert position between ...
1
vote
1answer
23 views
"ValueError: negative dimensions are not allowed" when using raster created from points in CSV
My problem is similar to "ValueError: negative dimensions are not allowed" when using raster created from NetCDF
I am working on a raster that I generated from the interpolation of some ...
1
vote
1answer
81 views
EPSG:3857 units are in meters, why is ST_Distance showing distant locations to be less than a meter apart?
According to Google, these two points are about 137 meters apart, yet the result of ST_Distance reports just a fraction of a meter? The units of the result should be in meters, as I understand it, ...
0
votes
0answers
31 views
How to reproject without shifting image?
Reprojecting an image shifts it by about 200m. I think this is because the reprojection changes the transform if I specify the scale.
I am hoping to change the resolution of the image (e.g. to a ...
1
vote
0answers
234 views
QGIS: No transform available error
I installed QGIS 3.16 on Ubuntu-20.04.
Details on 'About QGIS':
QGIS version
3.16.12-Hannover
QGIS code revision
be6cb030ac
Compiled against Qt
5.12.8
Running against Qt
5.12.8
Compiled against ...
1
vote
1answer
38 views
geometry.transform() removes the drawn feature in OpenLayers
I have a simple OL-based map with the default EPSG:3857 projection and an interaction which lets me draw a LineString on the map. Then, I have an event listener registered on the VectorSource, which ...
0
votes
0answers
21 views
Applying the same transformation to a Raster as a Point Cloud
I am using PDAL filter.transformation to apply the same transformation to all my point clouds.
pdal pipeline example:
[
"untransformed.las",
{
"type":"filters....
3
votes
2answers
167 views
Array for_each in QGIS
Is there an expression in QGIS for array for_each to get the element from the output of geom_to_wkt($geometry) of the polygon and correspondingly transform the element (using the expression of LAT ...
0
votes
2answers
131 views
Type error for gdal- GDAL-style transforms have been deprecated
I'm trying to export numpy ndarray that I have to TIFF using rasterio.
I have the transform of the image:
print(transf)
>>>(583932.1992386435, 10.0, 0, 2223772.1491772938, 0, -10.0)
When I ...
0
votes
0answers
47 views
GDAL Transformer from 2 sets of control points in map coordinates
I have 2 sets of control points, both in projected map coordinates (same CRS). I want to use them to transform either points or images (i.e. both).
Basically, this represents a nonlinear warping to ...
