schneidj@nextasy2.ece.wsu.edu.ece.wsu.edu (John B. Schneider) (07/02/90)
In <68@bode.ee.ualberta.ca> Eric Norum writes: >p.s. A good way of getting semi-log plots (for frequency responses, etc.) > from Mathematica would be great! I tried responding directly but couldn't get through. You can get log plots in Mathematica by first loading the package Graphics.m (located in /NextLibrary/Mathematics/Graphics). You load the package via the << operator or the Needs[] command. If this doesn't fit your needs, it usually only takes a slight hack to one of these canned packages to get what you want. With regard to his mention of gnuplot, I've been using gnuplot on the NeXT for some time now -- haven't observed any problems yet. I did have to modify post.trm in order to get encapsulated postscript code that I could paste into applications (like Draw and WriteNow). I added the line fprintf(outfile,"0. setgray\n"); to post.trm. Now, post.trm reads . . . fprintf(outfile,"/Gnu_save save def\n"); fprintf(outfile,"%.3f %.3f scale\n",PS_SC,PS_SC); fprintf(outfile,"0. setgray\n"); . . . All you have to do is set the terminal type to epsf1 or epsf2 and you get nice "pastable" encapsulated postscript.