What visualization open sources or free software libraries are available for the Fortran programming language? Are there any similar to MatPlotLib for Python, for Fortran?
If not, most scientists require visualization not only to generate some outputs but also to investigate data trends, which is missing in Fortran although its speed in computation is well-known.
Note:
This question is intended to discover available, or planned to be available, graphical libraries for Fortran. It is clearly not going to compare different packages among different programming languages.
The flexibility, quality of outputs, interactivity, multi-dimensionality, free/open source etc are of factors to be discovered.
I think there are some libraries available, which allow you to do directly some rendering of data from Fortran, however nothing like MatPlotLib, as far as I know.
Edit: Here is a short link collection:
But the main point of the typical Fortran application is not the visualization of the data, but its generation. Typically you produce some output file, which can then be read by gnuplot or some other visualization tool. A common data container format is for example HDF5.
If there is still some need for direct visualization from within the Fortran application, you can use the ISO_C_Binding to interface with any C-Library, which should provide you with plentiful options. Still for these cases it is likely, that you will need to generate some wrapping layer around the C-API to provide an convenient usage in the Fortran application.