[pstricks] read only every third line with \readdata

[Herbert Voss]

Philipp Loosmann wrote:

>>>in previous messages I read about 'ignore the first n rows' with
>>>\readdata.
>>>Is it possible to step over n rows while using \readdata?
>>>
>>>I'm using  `PSTricks-add' v2.73
> 
> 
>>all possible options are decribed in the documentation.
>>nStart, nEnd, xStart, ...

try it again with the file from
http://perce.de/LaTeX/pstricks-add/pstricks-add.tex


Herbert