"Regular expression problem..."

Axel

Hi everbody,

I try to use the Mapping operator to replace some attribute values by others.
Possible values are:  "disease1", "disiease2", "disease3" and  "Healthy".
I want to replace everything that is NOT "Healthy" by  "Sick" and try a regex with negative lookahead like this: ^(?!Healthy).

Unfortunately, nothing is replaced :-(
What am I doing wrong ?  When I test the regex at http://www.regexplanet.com/simple/index.html it seems to work.

Thanks,

Axel

haddock

Hi there Axel,

I think you needed a bit more, like this...

<operator name="Root" class="Process" expanded="yes">
    <operator name="ExampleSetGenerator" class="ExampleSetGenerator">
        <parameter key="target_function"	value="random"/>
    </operator>
    <operator name="BinDiscretization" class="BinDiscretization">
        <parameter key="range_name_type"	value="short"/>
    </operator>
    <operator name="Replace" class="Replace">
        <parameter key="attributes"	value="a.*"/>
        <parameter key="replace_what"	value="\b(?:(?!range1)\w)+\b"/>
        <parameter key="replace_by"	value="Haddock"/>
    </operator>
</operator>

Regex can turn normal humans to wobbly puddings, so I use RegexBuddy, and commend it to all but the most pointy-headed ascetics.


Pip Pip

( Exit Uncle Beastly stage left...)