How do I now view the datasets created so I can see the results of my operators? For example, in the example you give, how do I:
- view the first dataset before filtering
- view the last dataset after the FeaturenameFilter
By using breakpoints, like this....
<operator name="Root" class="Process" expanded="yes">
<operator name="ExampleSetGenerator" class="ExampleSetGenerator">
<parameter key="target_function" value="random"/>
<parameter key="number_examples" value="200"/>
<operator name="FeatureNameFilter" class="FeatureNameFilter" breakpoints="before">
<parameter key="skip_features_with_name" value="a.*"/>
<parameter key="except_features_with_name" value="att5"/>
<operator name="ExampleSetWriter" class="ExampleSetWriter">
<parameter key="example_set_file" value="bla"/>
The process halts before removing the attributes, to see the data check out the data view of the data table. Then continue and do the same to see what got written.
Where is the reference in the documentation that you mention by the way? I always search the documentation first but found nothing on this basic ETL stuff.
Curious, if I open rapidminer-4.2-tutorial.pdf and search on "remove attribute" the first hit is the section on the FeatureNameFilter operator. Equally, if you work through the tutorial ( Help->Rapidminer Tutorial ) you'll come across examples which use breakpoints, the first in example four...
That being said I've griped before about the documentation, but believe you me RM is much better and easier to use than the documentation. Being a halfwit myself perhaps I should offer up an idiot's guide to the data underworld...