Dump plot output into a byteArray

[robosina]

Is it possible to dump the plot into a byteArray, for example, a cv::Mat? It appears that exporting has some overloaded functions that take a path to an image that will be saved, but there isn't any function that can be used to store the plot as a byteArray.

The real saving is occurring in backend class, which is an interface class. The concrete classes are gnuplot and opengl_embed. Only the gnuplot has a real implementation for backend::output virtual function, and I have no idea how to get the buffer from there, but I'm investigating the code.

[alandefreitas]

Yes. I don't think the library has this feature.

[sirvincent]

@robosina did you manage to find a way to get the buffer?

For my current use case I would also prefer to dump into a byte array in place of a write to disk.