Yes the data files are save as .dat files, and are located where the maple program is, I don't think maple has a problem reading the file, it's just not giving a plot when I run it.

could this part of the program be the problem:

> for j from 1 to 21 do

lower[j]:=cat(`Hglower0det`,j,`.ps`);

upper[j]:=cat(`Hgupper0det`,j,`.ps`);

od:

as I am still using postscript file?

Thanks for your time!

Hi there,

Yes ive tried replacing the 8 with numbers 1,2,3 etc

What would be an alternative method of displaying the plot, can i simply have it appear on the computer screen when I run the programme?

I'm new to maple so I'm finding it tough, your help is much appreciated

Cheers Matthew