Hello José,

at the moment your only option is to recompile the library
with a larger value of PL_MAXPOLY.

I see in the source code that this limitation is especially
present for hardware fills. Not sure if the PL_MAXPOLY limit
is related to the underlying hardware though.

An alternative that requires a bit of work is to filter out
points from your data that are too close to each other to
matter (and then hope no more than 256 - the current limit are left).

Regards,

Arjen

On 2010-12-22 11:00, José Luis García Pallero wrote:
> Hello,
> I think that PLPlot is a great tool. Thanks to the developers for
> their hard work. I'm using PLPlot in order to draw worldmaps with
> coastlines. I'm using plfill, plline and plmap functions and I find
> they very useful. Nevertheless I have some minor problems (I'm using
> PLPlot 5.9.7 compiled by me on a Debian GNU/Linux Sid).
> 
> Using plfill I obtain a the message
> 
> *** PLPLOT WARNING ***
> plfill: too many points in polygon
> 
> using polygons with 1000 vertices. Can I change the maximum number of
> vertices at runtime or must I recompile the library?
> 
> I'm using the coastlines from
> http://rimmer.ngdc.noaa.gov/mgg/coast/getcoast.html that are
> downloaded in ascii files with NaN indicators between each piece of
> land. I can see that plfill and plline needs that the x and y arrays
> contains data without "holes" (separators)
> 
> I think it would be useful that plfill and plline could work with
> arrays containing some "labels", for example NaN values (0.0/0.0 in
> C), in order to manage several independent polygons or lines as, for
> example, coastlines downloaded from
> http://rimmer.ngdc.noaa.gov/mgg/coast/getcoast.html
> Maybe it would be interesting that plmap or other similar new function
> could load a coastline file, not only the internal of PLPlot. This
> files could fe in the ascii format as from
> http://rimmer.ngdc.noaa.gov/mgg/coast/getcoast.html
> 
> Thanks
> 
 

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