Thanks Bruce,

Those templates are immensely useful. I looked at them some years ago but at the time did not know enough to understand how to use them. A fresh look has got me up and running with a significantly better rendering of 1:5000 scale. I will probably spend far too long playing with them now rather than actually drawing anything new to be sure I have things working in my scraps properly before I spend a load of time drawing up a load more.

Footleg


On 3 March 2014 18:56, Bruce <bruce@tomo.co.nz> wrote:

Footleg

This was one of my early challenges shortly after discovering Therion, and it crops up from time to time on this forum.

I have decided that with ‘draw once, use many times’ I am limited to about half an order of magnitude difference in scales (ie 1:500 to 1:2000) to get label spacing and symbol placement that is more or less OK at a range of scales.

Personally, once I get to 1:5000 I pretty much turn off all symbols. http://therion.speleo.sk/wiki/doku.php/templates

Judicious use of text scales xs, s, m, l, xl allows one to crudely hide minor text at smaller scales.

You can use base-scale to globally reduce all text and symbol sizes.

Thomas Holders examples show how symbols can be made to plot to suit the scale. Ie hide smaller symbols. http://therion.speleo.sk/wiki/doku.php/metapost?s[]=thomas#scale_dependant_visualization_of_symbols

 

People have proposed various ‘dual scrap’ scenarios, but it seems to defeat what simplicity Therion has :)

 

You could use ‘revise’ for each symbol, but I think madness would lie down that route.

 

Check the wiki.

 

Bruce

 

 

From: therion-bounces@speleo.sk [mailto:therion-bounces@speleo.sk] On Behalf Of Footleg
Sent: Tuesday, 4 March 2014 7:01 a.m.
To: List for Therion users
Subject: [Therion] Drawing for generating outputs at multiple differentscales

 

Now that I have enough knowledge to really start drawing up my large project cave systems, I am discovering that it is difficult to draw scraps in a way which renders nicely at different scales. I want to be able to produce a very detailed survey (using a scale of around 1:500) but also to output a complete system drawing at a scale more suited to a large map (say 1:5000). I find symbols getting rendered larger than the passage widths (which seems odd as unless people have much larger passages than me in their caves, I would expect symbols to be limited to a sensible scale for a typical large passage, or omitted?). But also text labels are so large that they obscure entire areas of the cave at the 1:5000 scale.

 

Any tips and tricks for how to draw once, use twice? Or do I really need to maintain two copies of every scrap? Is there a way to draw some detail on a scrap for 1:5000 type scale, and then augment it with fine details for rendering at 1:500 by adding a second scrap for the labels and symbols?

 

Footleg


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