Creating a Fortran program to plot a graph

[bigomanclad]

Hi,

I have a programme which plots a table from an array perfectly fine, however I would like to now plot a graph based on this array which has the titles and numbering on it. Would someone please be able to help me?

Many thanks

 

[xwb]

1) Which OS are you using
2) Which compiler are you using
3) Do you just want a simple character based graph or something like gnuplot (

http://www.gnuplot.info/)

4) Does it have to be in Fortran or can you use an external package like Excel.

 

[Santoper]

I was trying to call gnuplot from a fortran program, I´m using Force 2.0 and gnuplot both for windows, I tried using the sentence call system like this:

CALL SYSTEM('C:\...\wgnuplot.exe gnuplot>load "graph"') or

CALL SYSTEM('Start W/ C:\...\wgnuplot.exe gnuplot>load "graph"')

none of them work the compiler says "unknown escape sequence "\.." for each bar in the sentence

what am I doing wrong?

 

[xwb]

In windows, ... is not a recognized path.

Once you've replaced all the ... with .., if it still doesn't work, replace all \ with \\.

 

[Santoper]

It works! I have changed all the \ by \\ in the paths and Gnuplot pops up, but I can´t plot or load the graphics, do you know why?

This is the sentence I´ve tried:

call system ('Start C:\\...\\GnuPlot\\bin\\wgnuplot.exe gnuplot>load "graph" ')

I'm not sure if the " are right so I´ve tried with others but it didn´t work.

Thanks a lot

 

[mikrom]

IMHO, you try to mix batch mode with interactive gnuplot-commands.
load is an interactive gnuplot command. In batch mode you should pass as argument to the gnuplot your graph definition file.
Your command line C:\\...\\GnuPlot\\bin\\wgnuplot.exe gnuplot>load "graph" is not good.
What should this gnuplot>load "graph" mean?

First try to run gnuplot with your graph definition file as an argument on command line. I would suggest something like this:

c:\path_to_gnuplot\wgnuplot.exe c:\path_to_input_file\myfile

When the above command line works, then call it from Fortran with

call system ("c:\path_to_gnuplot\wgnuplot.exe c:\path_to_input_file\myfile")

or when this doesn't work then try \\ instead of \:

call system ("c:\\path_to_gnuplot\\wgnuplot.exe c:\\path_to_input_file\\myfile")