[almost solved] md5 or external function

greg

Hello

Is there are way to compute MD5 in rapidminer, and generally to write some kind of external function or script?

TIA

greg

Rene

The Execute Script-Operator may be what you are searching for.
One example you can see here.

greg

Thanks a lot this is waaaaay cool

Now I just have to learn java lol

greg

I was able to create my custom function, but the GUI shows an error trying to connect the output the next block (namely a "union"), what did I do wrong?

ExampleSet exampleSet = operator.getInput(ExampleSet.class);
for (Example example : exampleSet) {
example["attribute_test"] = "test";
}
return exampleSet;

haddock

Hi there,

You could try

example.setValue("attribute_test","test" )

.

Good luck.

greg

Hi

That gives me the following error:

AM SEVERE: Process failed: The scripting engine Groovy reported an error in the script: groovy.lang.MissingMethodException: No signature of method: com.rapidminer.example.Example.setValue() is applicable for argument types: (java.lang.String, java.lang.String) values: [attribute_test, test]
Possible solutions: setValue(com.rapidminer.example.Attribute, java.lang.String), setValue(com.rapidminer.example.Attribute, double), getValue(com.rapidminer.example.Attribute), getClass(), values().

Using "equal" the script was working (the attribute is correctly filled), but the GUI doesn't accept the connection

greg

I changed to

Attribute attr = example.getAttributes().get("attribute_test");
example.setValue(attr,"test" );

same behavior as with "equal", I guess I need to inform the GUI, don't I ?

greg

No one has an idea? the process is working but the GUI states an error

MariusHelf

Hi greg,

what do you mean with "the gui states an error" - do you mean a warning or an error in the Problems view of RapidMiner? Don't worry, these are *possible* problems, and in some cases RapidMiner is not able to get the correct meta data information and thus indicates a possible error/warning.

Best, Marius