This library is a Fortran 95 gnuplot interface for some Unix like OS'es. This provides some routines that enables direct access of a child gnuplot session from a Fortran 95 program. You will need a copy of fortranposix to make this work.
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Thanks to gnuplotfortran API, I was able to save my program from extinction. My program originally extracted text data from AMBER .out files and set up data files for gnuplot. However, the user had to write his/her own gnuplot input files to process the extracted data. With the API, I was able to code routines into the program to plot the data directly. Over time I added a 3D plot capability and other features. I now use this program for plotting benchmark data.