Mojca Miklavec wrote:
If I leave the \obeyMPlines there, I get spurious characters (probably because TeX adds some character codes which correspond to \r or \n).
Yes. The ^M in the file is \catcode 13, and gets turned into \obeyedline. \obeyedline, it seems, contains a carriage return with \catcode 12.
If I comment out the \obeyMPlines it works OK, but longer graphics fail.
\def\processMYfile[#1][#2]{% \def\startMYgraphic {\obeyMPlines % <- no longer a problem \def\obeyedline{}% <- thanks to this \dosingleargument\dostartMYgraphic} \long\def\dostartMYgraphic[##1]##2\stopMYgraphic {\startreusableMPgraphic{#1 ##1}##2\stopreusableMPgraphic} \readlocfile{#2}{}{}}
Also, sometimes it fails because of TeX memory limit exceeded. (If gnuplot wants to draw a 100x100 grid, it needs 10.000 lines of code times three - one for color, one for shape, one for actually drawing/filling it, that makes it some 31.000 lines of code, and TeX cannot handle that. Will there be any possibility for a solution to it any time in the future except fixing gnuplot itself? It's not that important, but I would just like to know if that issue is solvable at all from within TeX or not.)
Not right now. Hopefully the next metapost version (1.1, due out in late spring/summer) will allow you to 'store' a set of the grid boxes and call for it, so you could for example save a 10x10 square and execute it 100 times. Best, Taco