[Therion] Scrap is too large to process in metapost in thisscale

Bruce bruce at tomo.co.nz
Wed Nov 23 20:14:22 CET 2011


Hello Mihai
I am intrigued that you are using both scanned images and xvi files in the
same drawing file (as mentioned in your 23Nov message below).  My friend and
I were just discussing this and my assumption was that it would be an
uncomfortable match if both types of image were used in the same scrap
because we cannot scale or rotate background images within the XTherion
interface (with respect to each other).

>From your description below you seem to be using quite a different drawing
strategy (in some respects) to what we use.
If you are willing to share your dataset with the forum (if not too big) or
by personal message, I would appreciate the learning.
Thanks
Bruce

-----Original Message-----
From: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] On Behalf
Of Mihai Terente
Sent: Thursday, 24 November 2011 3:26 a.m.
To: List for Therion users
Subject: Re: [Therion] Scrap is too large to process in metapost in
thisscale

It seems it will work if I add station points with the .xvi layer
activated as background image. Initally I disabled the layer because
of the grid, which I found quite annoying, and I kept only the morphed
images. It seems that in this way the program didn't recorded well the
coordinates of the points. Otherwise, with the .xvi grid and
centerline visible, if I add a station point it recognizes its name
automatically, and the coordinates are a little bit different, with
lot of decimals.

For the moment it compiles fine, in both .pdf and .shp format.

Cheers,
Mihai T.

On Wed, Nov 23, 2011 at 11:06 AM, Mihai Terente <terenteml at gmail.com> wrote:
> Yes, the same problem occurs when I add several station points. But
> this happens only when I reeference the points to stations from the
> survey (witn -name ...). I think it's something related to my approach
> for morphing scanned images. I did like this:
> - first I started an empty .th2 file (named schita-c1_w.th2, _w stands
> for "warped")
> - I added a background image (a piece of the scanned sketch,
> CC01.jpeg), with Edit>Insert Image
> - I created a scrap and I selected the scketch as a background image,
> with the Insert button from the Scraps section in the control panel
> - I added several station points, referenced to the station from a
> survey, with -name ... at survey. From these stations it's only one that
> is georeferenced (with fix command, in the survey preamble)
> - then I compiled the map with -format .xvi
> - Now, I noticed that if I add the .xvi file to my first .th2 file, I
> get the image morphed, with the centerline on top of it, but displaced
> with respect to my initial station points added to the scrap.
> - That's why I a created a new .th2 file (schita_c1.th2), I added the
> .xvi file as a background image and I drew the wall. If I compile the
> map now (output esri .shp) everything goes fine, except that the .shp
> is not georeferenced. If I add to the scrap the station point that is
> georeferenced (fix) in the survey I get the error.
>
> I put everything into the archive attached, if you have time to take a
> look, I would appreciate.
>
> Mihai T.
>
>
> I put all my files in the .zip attached




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