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Error: Failed to sparse content in column

JDeryckeJDerycke Member Posts: 1 Newbie
Hello everyone,

I just started using Rapidminer. When I tried to import data from Excel, I got an error notification. Does someone knows what this means and what I can do? 
This is the error notification I received: 
And this is an sample of the column 'CASES'

I think <5 is the problem, but I rather not delete any instances, before doing data analysis and cleaning.

Thank you very much for your help!

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    sgenzersgenzer Administrator, Moderator, Employee, RapidMiner Certified Analyst, Community Manager, Member, University Professor, PM Moderator Posts: 2,959 Community Manager
    hi @JDerycke yes that sounds like the problem. Just import that column as nominal first, then get rid of that < sign with a Replace operator, and then use Parse Numbers to make it numerical.

    Scott
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