Questions tagged [transform]

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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 ...
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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 ...
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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
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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, ...
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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 ...
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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
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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 ...
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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....
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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 ...
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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 ...
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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 ...