Error Could not create GDALDataset

[Girish Kumar]

Hi all,

         I have installed rsgislib on a virtual machine running RHEL 7 . After installing, when I have tried to run a python program to mosaic two images, it gives the following error Could not create GDALDataset(in  imageutils.resampleImage2Match function) .  Even I have run conda update -c conda-forge --all  also. Then also the same error is coming.The data is fine.

I have changed the data, now the following error is coming

/miniconda3/envs/gk/lib/python3.5/site-packages/rsgislib/imageutils/__init__.py", line 281, in resampleImage2Match

    raise Exception("Data type of the input file was not recognised or known.")

Exception: Data type of the input file was not recognised or known.

 I think it is something related to GDAL. Kindly help to resolve the issue.

I have tried to install it fresh, in virtual machine running RHEL 7, I have used the following command

conda config --add channels conda-forge

conda install rsgislib

I am able to use import rsgislib but while importing imageutis, error is coming 

>>> from rsgislib import imageutils

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

  File "/home/gk/miniconda3/envs/arcsi_2_2/lib/python3.6/site-packages/rsgislib/imageutils/__init__.py", line 6, in <module>

    from ._imageutils import *

ImportError: libopenblas.so.0: cannot open shared object file: No such file or directory

 

Kindly help to resolve the issue

Thanks and regards

Girish

[Girish Kumar]

Hi all,

I was able to solve the issue by installing the latest version in a new VM running RHEL.

I want to mosaic satellite imagery. When I used the rsgislib.imageutils.createImageMosaic function , it gives the error as not all the bands are of the same resolution, even though the images are of same type. I have used GDAL utility gdal_merge.py, and I was able to run the same images without errors. Why this error is coming in rsgislib?
Also I have tried to do reprojection of image using rsgislib.imageutils.reprojectImage, it is giving error.


Thanks and Regards

Girish

[Peter Bunting]

Hi Girish, 

Some of your input images will be at different image resolutions (i.e., pixel size). You can use gdalinfo to check - if you’re images are in degrees it maybe a rounding issue and then you can use rsgislib.imageutils.assignSpatialInfo to define all your images to exactly the same. If they are different resolutions then gdal_merge.py must be doing some resampling on the fly (which using VRTs gdal can do). We don’t do on the fly resampling as we’d like people to make a proper decision about what resampling (or projection definition if it is a rounding error) should be performed. 

Best wishes, 

Pete

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[Girish Kumar]

Hi Peter,

       Thanks for your quick response. I will try the assignSpatialInfo before doing mosaic.

With Warm Regards

T P Girish Kumar

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