Re: Filter dataset by column value Wrapper Python

You were right, it was the attribute location. 

Now, I get an error from this line:

subdata = f.filter(data)

The error is: 
JavaException: Variable 'ATT5' is undefined! 

this is the part of the code:
Filter(classname="weka.filters.unsupervised.instance.SubsetByExpression",
           options=["-E", "ATT5 is '%s'" % val])
    f.inputformat(data)

I want to filter by the variable "vehicle_id", it goes from 0 to 2453. I've checked the iris.arff and none ATT5 is defined.
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