Re: [GRASS-user] Load Grass vector file into geopandas-fiona
Hi Juan, On Tue, May 11, 2021 at 5:47 PM JUAN SEBASTIAN VINASCO SALINAS via grass-user wrote: > > > Hello everyone, > I am trying to read a vector file stored in a GRASS database from > geopandas-fiona. > > import fiona > import geopandas as gpd > > fiona.supported_drivers["OGR_GRASS"] = "r" > gdf = > gpd.read_file('/mnt/d/Datos_Landsat/nc_basic_spm_grass7/PERMANENT/vector/roadsmajor/head') > > However it seems that fiona support for GRASS data is not enabled by default. Yes, you need to also install the GDAL-GRASS-Plugin, see e.g. https://grasswiki.osgeo.org/wiki/Compile_and_Install_Ubuntu#GDAL-GRASS-Plugin (or get it ideally pre-compiled from your preferred operating system provider). > And the suggested activation does not work. Please explain what is suggested where along with the error (unless you mean the one below). > I get the following error > > Traceback (most recent call last): > File "fiona/_shim.pyx", line 73, in fiona._shim.gdal_open_vector > File "fiona/_err.pyx", line 270, in fiona._err.exc_wrap_pointer > fiona._err.CPLE_OpenFailedError: > '/mnt/d/Datos_Landsat/nc_basic_spm_grass7/PERMANENT/vector/roadsmajor/head' > not recognized as a supported file format. Yes, this indicates that the driver is missing which has been separated out to a stand-alone plugin for GDAL years ago (in order to avoid circular dependencies). ... > I think it is possible that the OGR build does not include the driver to read > GRASS GIS data, but this is new ground for me. does anyone have experience > with this integration? Yes :-) > I am running on a WSL2 and on a conda environment created with the following > packages: > - https://anaconda.org/iota2/grass (grass7.7) Note that GRASS GIS 7.7 is fairly old. > - https://anaconda.org/iota2/otb (Orfeo Toolbox 7.1) Now, I am not quite familiar with WSL2 and conda... Do you need conda at all? Is there a different way to get standard Ubuntu packages into WSL2... (with apt-get install package-name since the package exists: https://packages.ubuntu.com/focal/libgdal-grass). Perhaps others know how that works on Windows. Regards, Markus -- Markus Neteler, PhD https://www.mundialis.de - free data with free software https://grass.osgeo.org https://courses.neteler.org/blog ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Load Grass vector file into geopandas-fiona
Hello everyone, I am trying to read a vector file stored in a GRASS database from geopandas-fiona. import fiona import geopandas as gpd fiona.supported_drivers["OGR_GRASS"] = "r" gdf = gpd.read_file('/mnt/d/Datos_Landsat/nc_basic_spm_grass7/PERMANENT/vector/roadsmajor/head') However it seems that fiona support for GRASS data is not enabled by default. And the suggested activation does not work. I get the following error Traceback (most recent call last): File "fiona/_shim.pyx", line 73, in fiona._shim.gdal_open_vector File "fiona/_err.pyx", line 270, in fiona._err.exc_wrap_pointer fiona._err.CPLE_OpenFailedError: '/mnt/d/Datos_Landsat/nc_basic_spm_grass7/PERMANENT/vector/roadsmajor/head' not recognized as a supported file format. During handling of the above exception, another exception occurred: Traceback (most recent call last): File "", line 1, in File "/home/juan/miniconda3/envs/iota2-env/lib/python3.6/site-packages/geopandas/io/file.py", line 76, in read_file with reader(path_or_bytes, **kwargs) as features: File "/home/juan/miniconda3/envs/iota2-env/lib/python3.6/site-packages/fiona/env.py", line 397, in wrapper return f(*args, **kwargs) File "/home/juan/miniconda3/envs/iota2-env/lib/python3.6/site-packages/fiona/__init__.py", line 253, in open layer=layer, enabled_drivers=enabled_drivers, **kwargs) File "/home/juan/miniconda3/envs/iota2-env/lib/python3.6/site-packages/fiona/collection.py", line 159, in __init__ self.session.start(self, **kwargs) File "fiona/ogrext.pyx", line 484, in fiona.ogrext.Session.start File "fiona/_shim.pyx", line 80, in fiona._shim.gdal_open_vector fiona.errors.DriverError: '/mnt/d/Datos_Landsat/nc_basic_spm_grass7/PERMANENT/vector/roadsmajor/head' not recognized as a supported file format. I think it is possible that the OGR build does not include the driver to read GRASS GIS data, but this is new ground for me. does anyone have experience with this integration? I am running on a WSL2 and on a conda environment created with the following packages: - https://anaconda.org/iota2/grass (grass7.7) - https://anaconda.org/iota2/otb (Orfeo Toolbox 7.1) Regards, Juan ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user