...SpecTcl is relatively easy to learn, and is based on top of a very open C++ histogramming class framework.
SpecTcl has been developed under NSF grant PHY-9528844 and DOE grant DE-SC0000661
Note that as of July 2023, all future development and release packages will be occur at https://github.com/FRIBDAQ/SpecTcl
...Try PNGwriter. Written with scientific simulations in mind, PNGwriter allows you to plot to a PNG image pixel by pixel.
* * *README* * *
This is the last PNGwriter release that will be hosted on SourceForge.net. Please use the following site:
https://github.com/pngwriter/pngwriter/releases
to find all versions of PNGwriter including and later than 0.5.5.
The PNGwriter website is still hosted on SourceForge.net:
http://pngwriter.sourceforge.net
Thank you!
@individual61 @ax3l