[Therion] Atlas page positioning SOLVED

[Bruce Mutton]

Bruce wrote...
>   origin 2500600 6023000 600  meters  #co-ords of lower left corner of
first atlas page
> If I leave out the last line I get perfect atlas's (and all other outputs
> for that matter) - just not a very efficient use of 'paper'.
>
> If I include the last line I get;
>
> D:\Program Files\Therion\therion.exe: error -- mixing local and global
> coordinate systems not allowed -- conflict with cs specification at
> LayoutPlanThisAtlas.thc [11]


Martin wrote...
You need to specify 'cs' also in the layout, before setting the
'origin'. Therion can not presume that cs in the data files is the
same as in the layout.

Martin__

Thanks Martin, that seems logical now that I think of it that way.
I have been of the habit of only specifying the cs once for any cave system,
and Therion seems to assume that the sub-surveys will be the same as the top
level survey cs.  It is reasonable that one might want a layout presented in
a different cs.

I tried it (conservatively with one cs) and it works fine! 
Thanks
Bruce

[Therion] Atlas page positioning

[Martin Budaj]

On Fri, Aug 8, 2008 at 10:12 PM, Bruce Mutton
 wrote:
>
> and my layout file contains;
>
>   origin-label 2 A #label type 
>   2 A gives A1, 1 A gives A0, 0 A gives A-1
>
>   origin 2500600 6023000 600  meters  #co-ords of lower left corner of first
> atlas page
>
>
>
> If I leave out the last line I get perfect atlas's (and all other outputs
> for that matter) – just not a very efficient use of 'paper'.
>
> If I include the last line I get;
>
> D:\Program Files\Therion\therion.exe: error -- mixing local and global
> coordinate systems not allowed -- conflict with cs specification at
> LayoutPlanThisAtlas.thc [11]

You need to specify 'cs' also in the layout, before setting the
'origin'. Therion can not presume that cs in the data files is the
same as in the layout.

Martin

[Therion] Atlas page positioning

[Bruce Mutton]

I still have a gap in my understanding of how atlas's are arranged.

My assumption from reading the Therion Book is that the origin and
origin-label commands are about how to position the tessellation of atlas
pages on the 2D cave image.  (Sorry, have not downloaded the latest version
just yet)



My INDEX.th file contains;

  centreline

cs EPSG:27200 #NZ Map Grid 1949

#Entrance co-ordinates

fix N2 at n 2500597 6023471  751  #NZMG GL entrance 

  endcentreline 



and my layout file contains;

  origin-label 2 A #label type 
  2 A gives A1, 1 A gives A0, 0 A gives A-1

  origin 2500600 6023000 600  meters  #co-ords of lower left corner of first
atlas page



If I leave out the last line I get perfect atlas's (and all other outputs
for that matter) - just not a very efficient use of 'paper'.

If I include the last line I get;

D:\Program Files\Therion\therion.exe: error -- mixing local and global
coordinate systems not allowed -- conflict with cs specification at
LayoutPlanThisAtlas.thc [11]



The origin co-ordinate given is just to the bottom left of the cave in the
projections I am using (plan, elevation 290 deg) so that when I have the
whole cave system drawn it will fit on a grid of A2 sized pages that is two
sheets high (rather than three)

I am using rotate 070 to orient the plan nicely on the paper.

(I think once I have this sorted out I will be able to use a more sensible
origin-label specification)



Is my understanding of the purpose of these two commands correct?

I have tried a number of spellings of 'meters' and leaving out the units to
no avail.  

Any ideas?



Bruce



-- next part --
An HTML attachment was scrubbed...
URL: