[Therion] There's Grids then and there's Grids

Martin Budaj m.budaj at gmail.com
Tue Nov 27 20:51:35 CET 2007


On Nov 27, 2007 8:24 PM, Bruce Mutton <bruce.mutton at paradise.net.nz> wrote:
> >There are two grids on the map:
> >1. coordinate grid - displayed via "grid top|bottom", size specified via
> >grid-size
> >2. map atlas pages grid - displayed via "page-grid on|off", size specified
> >using page-setup
> >Which one do you mean?
>
> Ah, Stacho.  Two types of grids!
> That explains part of my conundrum. Now that I know it exists I'm not sure
> what the map atlas grid might be for?

It shows how the whole plan would be divided into pages in the atlas export.

> The other relates to the co-ordinate grid; illustrated by the attached pdfs,
> scaled at 1:1000.
> When specified as 10 10 10 I get nice continuous grids, but when specified
> as 50 50 50 or 100 100 100 (and no other changes) I get cross hairs, which
> are not too my liking.
>
> These two types of coordinate grids, continuous and cross hairs, are nice
> options, but how do I control which type I get?

Actually there is just cross-hairs type defined in metapost. When you
use 10 10 10 spacing, they overlap the neighbouring crosses and create
an illusion of  continuous lines. However, this behaviour is not
hard-coded and can be redefined in metapost.

Martin



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