after reading a lot about licensing gnuplot I feel rather confused and would like to ask you about my particular case:
I developed a highly specialized mathematical software tool (non linear optimisation) and would like to sell it in the future to universities and laboratories of investigation. This means that my software will be comercial.
For didactic reasons I would like to produce a 3d-plot by piping the functionstring to the external program gnuplot. Gnuplot 4.6 will be located in it's own directory apart (called gnuplot) with all its features and without any modification. The whole bundle would be shipped together to the client.
Of course the corresponding copyright reference will be placed in the documentation.
I woulld llike to know from you if this conception is legal under the scope of the gnuplot-licence or if there were any
other option for me.