Hi again, It would be good to have some advise on how people deal with mistakes in sketches. For example: I have scans of a survey which was drawn up in the field however the centreline on this contains a blunder (a leg 180 degrees out). I can trace the survey and give therion the correct centreline data, but it produces a scrap with very large distortions around the blunder -- I need to redraw a section of the scrap. I can export a .xvi to draw around but that doesn't contain the outline of the rest of the scarp to join in to. I can export a PDF or SVG but that can't be imported as a background into xtherion. How do people deal with this situation? My current idea is to produce a PDF, render to PNG with ghostscript, then import that into xtherion and overlay a .xvi (hoping they'll line up) to get station LRUDs to draw round. Does anyone have an easier way, I have a number of such things to correct? Cheers, John
It would be good to have some advise on how people deal with mistakes in sketches. For example:
Having made a couple I now make as sure as I can that there are no gross mistakes before I start drawing.
I can export a .xvi to draw around but that doesn't contain the outline of the rest of the scarp to join in to. I can export a PDF or SVG but that can't be imported as a background into xtherion. How do people deal with this situation?
You could save your pdf to jpg format with Adobe Acrobat.
My current idea is to produce a PDF, render to PNG with ghostscript, then import that into xtherion and overlay a .xvi (hoping they'll line up)
Almost certainly they won't. If you scan to same resolution and orientation you may get lucky, but I would not count on it.
to get station LRUDs to draw round. Does anyone have an easier way, I have a number of such things to correct?
I would tend to print out a centre line and hand draw on that, copying/tracing the good parts of the old one. Then scan and start drawing a replacement scrap. Alternatively break your existing scrap into two at the point of the error, then manually add corrections 'by eye'. May be confusing, as probably the scraps as drawn in Xtherion will overlap (although the finished product should butt them together correctly). Cheers, Hope this helps Bruce
I had the same problem quite a few times, especially to correct old drawings that have an error, or to iterate the drawing corrections when there is a new loop for instance. As all the point positions and handle orientations are warped to produce the pdf, it seems to me that it could be possible to add a th2 export type which would simply outputs the same th2 file with warped coordinates. Of course, there could be problems with the included images and sketches, but that could be skipped if we already have all the other objects. Any remark on the possibility of such an export? Xavier Bruce Mutton a écrit :
It would be good to have some advise on how people deal with mistakes in sketches. For example:
Having made a couple I now make as sure as I can that there are no gross mistakes before I start drawing.
I can export a .xvi to draw around but that doesn't contain the outline of the rest of the scarp to join in to. I can export a PDF or SVG but that can't be imported as a background into xtherion. How do people deal with this situation?
You could save your pdf to jpg format with Adobe Acrobat.
My current idea is to produce a PDF, render to PNG with ghostscript, then import that into xtherion and overlay a .xvi (hoping they'll line up)
Almost certainly they won't. If you scan to same resolution and orientation you may get lucky, but I would not count on it.
to get station LRUDs to draw round. Does anyone have an easier way, I have a number of such things to correct?
I would tend to print out a centre line and hand draw on that, copying/tracing the good parts of the old one. Then scan and start drawing a replacement scrap.
Alternatively break your existing scrap into two at the point of the error, then manually add corrections 'by eye'. May be confusing, as probably the scraps as drawn in Xtherion will overlap (although the finished product should butt them together correctly).
Cheers, Hope this helps Bruce
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On 19.2.2009, at 0:18, John Pybus wrote:
It would be good to have some advise on how people deal with mistakes in sketches. For example:
There are several way how to do it. 1. Make shorter scraps - in extreme covering only one survey leg. 2. try to use the morfing feature of therion. Check the samples directory in therion. Do make there, in not compiled. After remake of therion book they should be the last appendix there. You may find them on URL http://therion.speleo.sk/samples.doc/ too. If you will play with morfing you should modify the layout a bit - see attached pictures - and add the sketch to be morfed to scrap. If you save the xvi, and use it as background image there should be two files - xvi and xvi - IMG1. The second one is the morfed sketch. Hope this helps. m.s.
participants (4)
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Bruce Mutton -
John Pybus -
Martin Sluka -
Xavier Pennec