[GRASS-user] v.class.mlR error

[James Duffy]

On 10 November 2016 at 19:37, Moritz Lennert <mlennert at club.worldonline.be>
wrote:

>
>
> Le 10 novembre 2016 15:45:59 GMT+01:00, James Duffy <
> james.philip.duffy at gmail.com> a écrit :
> >Hello,
> >
> >I'm trying to run v.class.mlR on a vector map, with a separate vector
> >map
> >containing my training data. Currently I have two classes '1' and '2'
> >stored in the column 'class'. My region is set to that of the segments
> >to
> >be classified. I run the following command:
> >
> >v.class.mlR segments_map=gp_seg_stats_vec at gp1 \
> >training_map=gp_seg_sed_grass at gp1 train_class_column=class \
> >output_class_column=vote output_prob_column=prob folds=5 \
> >partitions=10 tunelength=10 weighting_metric=accuracy
> >
> >And get the following output:
> >
> >Running R now. Following output is R output.
> >Loading required package: caret
> >Loading required package: lattice
> >Loading required package: ggplot2
> >Loading required package: kernlab
> >
> >Attaching package: ‘kernlab’
> >
> >The following object is masked from ‘package:ggplot2’:
> >
> >    alpha
> >
> >Loading required package: randomForest
> >randomForest 4.6-12
> >Type rfNews() to see new features/changes/bug fixes.
> >
> >Attaching package: ‘randomForest’
> >
> >The following object is masked from ‘package:ggplot2’:
> >
> >    margin
> >
> >Loading required package: rpart
> >Error in eval(expr, envir, enclos) : object 'cat_' not found
> >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.
> >
> >
> >I'm not entirely sure where it's looking for anything called 'cat_'.
> >
> >Any help much appreciated please.
>
>
> Could you send us the output of v.info -c for both of the input maps ?
>

v.info -c --verbose map=gp_seg_stats_vec at gp1

INTEGER|cat
DOUBLE PRECISION|area
DOUBLE PRECISION|perimeter
DOUBLE PRECISION|fd
DOUBLE PRECISION|gpo1min
DOUBLE PRECISION|com_circ
DOUBLE PRECISION|gpo1max
DOUBLE PRECISION|gpo1range
DOUBLE PRECISION|gpo1mean
DOUBLE PRECISION|gpo1stdev
DOUBLE PRECISION|gpo1var
DOUBLE PRECISION|gpo1sum
DOUBLE PRECISION|gpo2min
DOUBLE PRECISION|gpo2max
DOUBLE PRECISION|gpo2range
DOUBLE PRECISION|gpo2mean
DOUBLE PRECISION|gpo2stdev
DOUBLE PRECISION|gpo2var
DOUBLE PRECISION|gpo3min
DOUBLE PRECISION|gpo3max
DOUBLE PRECISION|gpo3range
DOUBLE PRECISION|gpo3mean
DOUBLE PRECISION|gpo3stdev
DOUBLE PRECISION|gpo3var
DOUBLE PRECISION|gpo3sum
DOUBLE PRECISION|gpo4min
DOUBLE PRECISION|gpo4max
DOUBLE PRECISION|gpo4range
DOUBLE PRECISION|gpo4mean
DOUBLE PRECISION|gpo4stdev
DOUBLE PRECISION|gpo4var
DOUBLE PRECISION|gpo4sum
Displaying column types/names for database connection of layer <1>:
(Fri Nov 11 09:17:34 2016) Command finished (0 sec)

v.info -c --verbose map=gp_seg_sed_grass at gp1

INTEGER|cat
INTEGER|cat_
DOUBLE PRECISION|area
DOUBLE PRECISION|perimeter
DOUBLE PRECISION|fd
DOUBLE PRECISION|gpo1min
DOUBLE PRECISION|com_circ
DOUBLE PRECISION|gpo1max
DOUBLE PRECISION|gpo1range
DOUBLE PRECISION|gpo1mean
DOUBLE PRECISION|gpo1stdev
DOUBLE PRECISION|gpo1var
DOUBLE PRECISION|gpo1sum
DOUBLE PRECISION|gpo2min
DOUBLE PRECISION|gpo2max
DOUBLE PRECISION|gpo2range
DOUBLE PRECISION|gpo2mean
DOUBLE PRECISION|gpo2stdev
DOUBLE PRECISION|gpo2var
DOUBLE PRECISION|gpo3min
DOUBLE PRECISION|gpo3max
DOUBLE PRECISION|gpo3range
DOUBLE PRECISION|gpo3mean
DOUBLE PRECISION|gpo3stdev
DOUBLE PRECISION|gpo3var
DOUBLE PRECISION|gpo3sum
DOUBLE PRECISION|gpo4min
DOUBLE PRECISION|gpo4max
DOUBLE PRECISION|gpo4range
DOUBLE PRECISION|gpo4mean
DOUBLE PRECISION|gpo4stdev
DOUBLE PRECISION|gpo4var
DOUBLE PRECISION|gpo4sum
CHARACTER|type
INTEGER|class
Displaying column types/names for database connection of layer <1>:
(Fri Nov 11 09:20:35 2016) Command finished (0 sec)


>
> Moritz
>
>
>
>
James
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