[Therion] background sketch makes map output extent huge

[Stacho Mudrak]

Hi Bruce,

can you send me your dataset to see, what is going on? I have no idea,
where the problem can be.

Thanks, S.

On 10 February 2010 01:18,  <dangle at tomo.co.nz> wrote:
> I have an image of a scanned cave plan that I have attached to a scrap as a
> ‘background sketch’ and am exporting to a pdf.  I have a point for the
> entrance and a have used a made up survey line to produce a rudimentary
> therion model on which to hang the scanned image and produce a loch model to
> view with a 3d surface.
>
>
>
> All list, 2d map and 3d model outputs that I have tried (I have not tested
> all possible variants) are created perfectly, except that for 2d pdf map
> outputs when the sketch is activated with ‘sketches on’, the extent of the
> area mapped extends about 1km too far left and too far upwards.  The extents
> should be 1km x 0.4km, so something is more than doubling the extent.  The
> image is cropped tightly to the cave and there are no spurious survey
> stations causing this.  I am using ‘rotate 70’.  Have not had this effect
> before, and the only thing unusual from my point of view is that the image
> has a transparent background so that the aerial photograph can be seen
> overlaid on the cave.  I can not see anything wrong with the th2 file (as
> follows)
>
>
>
> ##XTHERION## xth_me_area_adjust -28.0 -294.0 6134.0 2316.0
>
> ##XTHERION## xth_me_area_zoom_to 25
>
> ##XTHERION## xth_me_image_insert {100.0 1 1.0} {2188.0 {}}
> sketches/SUMMITTO_Clear2.png 0 {}
>
>
>
> scrap summitPlan-s1 -projection plan -author 2010.01.30  "B Mutton"
> -copyright 2010 "NZSS" -scale [0 0 1600 0 0.0 0.0 40.64 0.0 m] -sketch
> sketches/SUMMITTO_Clear2.png 100.0 -166.0
>
>
>
> point 712.0 28.0 station -name 19 at S
>
>
>
> point 4604.0 1328.0 station -name 4 at S
>
>
>
> point 5440.0 1884.0 station -name 1 at S
>
>
>
> endscrap
>
>
>
>
>
> Any ideas as to why a background sketch should make therion think the extent
> of the cave is so much bigger?
>
> -A problem with my image file?
>
> -A problem with one of my therion data files (I think I have ruled those
> out, but I may have missed something)?
>
> -A bug?
>
>
>
> Bruce
>
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