i have to generate a proj4 definition string from affine transformation parameters (A-F).
I have a local coordinatesystem based on EPSG:31466
The affine parameter are:
A = 0.933176825, B = -0.358394718, C = 2557551.066, D = 0.358262137, E = 0.933522886, F = 5635190.282
Coordinates of 31466:
coordinates of local coordinatesystem:
but how to translate the affine parameter to a proj4 string? i need it for gdal and geoserver
PROJ gurus--Please feel free to edit and/or add your own answer!
proj5 just added the ability to include an affine transformation to the transformation pipeline a few weeks ago (approximately 1 Oct 2018).
There's an ongoing project to add support for the transformation pipeline into GDAL and QGIS over the next months.
So, it's not there yet.