help > RE: Specifying gPPI 'Tasks'
Jul 17, 2014  04:07 PM | Miriam Globus
RE: Specifying gPPI 'Tasks'
Dear Mr. McLaren,
I am new to PPI Analyses and I am very sorry for bothering you with this somehow unspecific question.
I have an event-related design with 11 different conditions. There are approximately 8 events per condition.
I set up a wrapper script and the P structure for the PPPI function looks just fine, however I get an error such as

Invalid Contrast
Warning: Missing conditions!!! Invalid Contrast

This is puzzling, as the conditions can be seen at P.Tasks and they look just fine.
The error is created when the new regressors are created (in a script called createvec).
However I don't understand the underlying problem.
Could you or anybody else give me any suggestions on what to change?

Thank you very much and best from Berlin
Miriam

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Marcos Economides Nov 19, 2013
Donald McLaren Nov 19, 2013
Marcos Economides Nov 26, 2013
Donald McLaren Nov 26, 2013
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Donald McLaren Nov 27, 2013
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Donald McLaren Jan 2, 2014
RE: Specifying gPPI 'Tasks'
Miriam Globus Jul 17, 2014