[NTG-context] Re: How can I use a variable for a MetaPost coordinate ?

["Thomas A. Schmitz" <thomas.schmitz@uni-bonn.de>]

Have a look at chapter 6.4 of the metafun manual. You need StartPage ... 
StopPage in your MPcode, then you can knock yourself out by using 
variables such as PaperHeight or TextHeight and do all sorts of 
calculations.

All best

Thomas

On 10/5/23 05:54, peter.hopcroft--- via ntg-context wrote:
> Hello list, I want to draw lines on a page. I want to pass my line 
> coordinates as a percent of \width or \textheight, rather than as 
> millimetres. So that if I change the page size I don't need to change 
> the coordinates. The MWE below compiles but the pdf does not have any 
> lines drawn on it. Is there a way of doing calculations on the 
> coordinates for the draw using ConTexT variables like \textheight? Thank 
> you, Peter Hopcroft


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