Re: Command "show" in Metapost/Metafun

[Aditya Mahajan <adityam@umich.edu>]

On Thu, 12 Mar 2009, Curious Learn wrote:

> Hi,
>
> I am trying to learn Metapost using Context. I tried a few examples for drawing
> things and they worked well. But the "show" command does not seem to work. For
> example, the code
>
> \startuseMPgraphic{GridDots}
> 	u=1cm;
> 	pickup pencircle scaled 8pt
> 	for i = 0 upto 2:
> 		for j = 0 upto 2: draw (i*u,j*u); endfor
> 	endfor
> \stopuseMPgraphic
> \useMPgraphic{GridDots}
>
> from John Hobby's manual works great.
>
> However, the following code gives no output in the PDF file. Am I doing
> something wrong?
>
> \startuseMPgraphic{LinearEq}
>   a+b = 2a - b = 3;
>   show a,b;
> \stopuseMPgraphic
> \useMPgraphic{LinearEq}
>
> I am using the following version from Texlive
> ConTeXt  ver: 2008.05.21 15:21 MKII  fmt: 2008.10.1  int: english/english

The output of show goes to the terminal and the log file. Look for the 
values in filename-mpgraph.log.

Aditya
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