[GRASS-user] v.class.mlR Error

[Moritz Lennert]

On 07/06/18 13:45, Jamille Haarloo wrote:
> I see. That was one of the big problems then. I knew it used R-resources 
> but wasn't sure the software itself was required. Must have overlooked 
> it in the documentation and other user- topics as I was reading about 
> the module.

You are right that it is never explicitely stated that it is the user's 
responsibility to install R. I just committed a patch to the man page 
which explains this in the Dependencies section.

> 
> Now I have R-3.5, but still get an error:
> 
> v.class.mlR --overwrite training_map=Training_Ben2 at haarlooj_Ben_Test 
> segments_file=C:\Users\haarlooj\Documents\CELOS\Stats_Training_Ben_test 
> raster_segments_map=best_myregion1_at_haarlooj_Ben_Test_rank1 at haarlooj_Ben_Test 
> train_class_column=code output_class_column=vote output_prob_column=prob 
> classifiers=svmRadial,rf,C5.0 folds=5 partitions=10 tunelength=10 
> weighting_modes=smv,qbwwv weighting_metric=accuracy 
> classification_results=C:\Users\haarlooj\Documents\CELOS\v.class.mIRR_optional_output\Ben_test_Classifier-results 
> accuracy_file=C:\Users\haarlooj\Documents\CELOS\v.class.mIRR_optional_output\Ben_test_Classifier-accuracy 
> model_details=C:\Users\haarlooj\Documents\CELOS\v.class.mIRR_optional_output\Ben_test_Classifier-module-runs 
> bw_plot_file=C:\Users\haarlooj\Documents\CELOS\v.class.mIRR_optional_output\Ben_test_Classifier-performance 
> r_script_file=C:\Users\haarlooj\Documents\CELOS\v.class.mIRR_optional_output\Ben_test_R_script 
> processes=3

[...]

> Error in eval(predvars, data, env) : object 'id' not found

This seems to be the relevant error, but I'm not sure I understand where 
it comes from.

Could you provide us with the first 20 lines of

C:\Users\haarlooj\Documents\CELOS\Stats_Training_Ben_test

and the first 20 lines of the output of

v.db.select Training_Ben2 at haarlooj_Ben_Test

?


> Calls: data.frame ... predict.train -> model.frame -> 
> model.frame.default -> eval -> eval
> Execution halted
> ERROR: There was an error in the execution of the R script.
> Please check the R output.
> Error in atexit._run_exitfuncs:
> Traceback (most recent call last):
>    File "C:\Program Files\GRASS GIS
> 7.4.0\Python27\lib\atexit.py", line 24, in _run_exitfuncs
>      func(*targs, **kargs)
>    File "C:\Users\haarlooj\AppData\Roaming\GRASS7\addons/scri
> pts/v.class.mlR.py <http://v.class.mlR.py>", line 236, in cleanup
>      gscript.try_remove(model_output_csv)
> NameError: global name 'model_output_csv' is not defined
> Error in sys.exitfunc:
> Traceback (most recent call last):
>    File "C:\Program Files\GRASS GIS
> 7.4.0\Python27\lib\atexit.py", line 24, in _run_exitfuncs
>      func(*targs, **kargs)
>    File "C:\Users\haarlooj\AppData\Roaming\GRASS7\addons/scri
> pts/v.class.mlR.py <http://v.class.mlR.py>", line 236, in cleanup
>      gscript.try_remove(model_output_csv)
> NameError: global name 'model_output_csv' is not defined


This last error should not be happening anymore since yesterday. Could 
you reinstall using g.extension ?

Moritz