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

[Mihai Terente]

Dear Stacho,

Indeed, if I place a station in every scrap it will place the whole
map correctly. But it seems that it's not enough, the shape of the
cave is not well rendered. I need to place all the station points so
that the output shape to be correctly displayed. See the attached
image, where I have the same cave passage. With dark green it's the
shape of the cave after I put all the station points, while with dark
red it's the shape with only two station points, the yellow dots.

Anyway, many thanks, the problem is solved!

Mihai



On Wed, Nov 23, 2011 at 10:34 PM, Stacho Mudrak <lists at group-s.sk> wrote:
> Dear Mihai,
> thanks for the data. It looks you have found a problem in therion. The
> problem is simple.
> In the scrap scrap-c1, there is no station. Therefore it calculates
> coordinates according to calibration - assuming calibration is in the output
> coordinate system. Obviosly, this is not your case. Therefore adding just
> single station to every scrap places this scrap correctly and it starts
> working.
> In this case, therion should generate an error, that would be easy to
> understand. Thanks for pointing this out.
> Best regards, S.
> On 23 November 2011 20:14, Bruce <bruce at tomo.co.nz> wrote:
>>
>> 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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