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  Grayscale
Posted by Sinan Tuncer on Jan-28-2018 21:40
Hi,

is it possible to generate grayscale png with the c++ interface?

Thank you,
Sinan

  Re: Grayscale
Posted by Peter Kwan on Jan-29-2018 02:30
Hi Sinan Tuncer,

Yes. It is like:

... create the chart as usual ....

// reduce the colors to 256 level grey scale
c->makeChart3()->reduceColors(256, true);

// output the chart in PNG
c->makeChart("/path/to/aaa.png");

Hope this can help.

Regards
Peter Kwan