[Therion] Joining maps with the join command

[Martin Sluka]

The angle between two identical points. 

Odesláno z iPhonu

15. 4. 2019 v 19:35, Tarquin Wilton-Jones via Therion <therion at speleo.sk>:

> Sorry for dragging a thread in the wrong direction, but ...
> 
>> That would indeed be helpful.
> 
> 
> If you're looking for a nice example ... this is what happens when you
> create a slope with two straight points, then accidentally add a third
> point on the same position as the first one:
> 
> "
> ! angle(0,0) is taken as zero.
> <for(0)> ...EXPR0)])-angle(thdir((path),(EXPR0))))
> 
> mod360;alw_perpendicular:=...
> 
> l_slope->...wn.lengths[i]:lengths[i]:=-1;fi;endfor
> 
> ;ni:=0;pi:=0;for.i=0upto.l...
> l.9329 ...(1,51.7368,24.3004),(2,51.7368,24.3004))
>                                                  ;
> The `angle' between two identical points is undefined.
> I'm zeroing this one. Proceed, with fingers crossed.
> 
> ...
> 
> error -- metapost exit code -- 2
> "
> 
> That one is really not very human readable (though I can at least see it
> was a "slope" at fault).
> 
> 
> Tarquin
> _______________________________________________
> Therion mailing list
> Therion at speleo.sk
> https://mailman.speleo.sk/listinfo/therion