[Therion] drawing files with unnecessary large extents createdby therion/topparser

Sat Oct 5 21:21:39 CEST 2013

Thanks Martin

I think you mean zoom factor 25 is better than zoom factor 50, because 25 is
zoomed out more so I can see more.

zoom factor 400 zooms in close so it becomes even harder!

Your explanation re the large numbers does not guide on how to choose which
smaller numbers to use.  I presume I can use the coordinate counter on the
bottom right of the XTherion window.

But even easier, the obvious thing I was not doing was to use the drawing
area pane Auto Adjust button.

If the referenced xvi file does not exist, it zooms the drawing area to the
drawing extents.

If it does exist, it zooms the drawing area to the larger of the drawing
extents or the xvi grid (but not the xvi drawing if it is outside the grid).

So here is the user interface driven solution that requires no manual file
editing.

When the th2 file extents are too large and or when it will not save the
position of the drawing on the screen on reopening

1.	Draw some scrap entities that extend to the far reaches of what will
be your drawing area.
2.	Save your th2 file and close Xtherion
3.	Rename the xvi file so that Xtherion temporarily cannot find it
4.	Open the th2 file in Xtherion then Drawing pane Auto Adjust button
so that Xtherion zooms the drawing extents 
5.	Save your th2 file and close Xtherion
6.	Rename the xvi file back to its original name
7.	Open the th2 file in Xtherion and it should have remembered your new
drawing area and drawing position in the window, even though the xvi grid
and (spurious) drawings may extend far outside of that area.

Bruce

  _____  

From: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] On Behalf
Of Martin Sluka
Sent: Saturday, 5 October 2013 10:03 p.m.
To: List for Therion users
Subject: Re: [Therion] drawing files with unnecessary large extents
createdby therion/topparser

Last line of xvi file:

set XVIgrid {-1597.48031496 -19633.6220472 78.7401574803 0.0 0.0
78.7401574803 492.0 268.0}

First two number are too big.

The same in th2 file - first 4 lines:

encoding  utf-8

##XTHERION## xth_me_area_adjust -7709.75 -4195.57 46258.49 25173.45

##XTHERION## xth_me_area_zoom_to 50

##XTHERION## xth_me_image_insert {6335.80417323 1 1.0} {21161.1492913
408.13} ptopoQuackery/408-SurfaceTension_p.xvi 0 {}

The second line shows too big size of area and 4th line too big coordinates.

BTW, zoom factor 50 is too low for such xvi file - line 3. try to change it
to 400 for beginning.

You may edit all this parameters in th2 file manually in xtherion map
editor.

m.s.

Oct 5, 2013 v 9:25 AM, Bruce <bruce at tomo.co.nz>:

That would make sense.

More likely that it is particular users accidentally draw near the edges of
the screen when zoomed out.

That would explain why some cave survey bookers have this more often!

In the example I sent, the stray lines are near the end I expect, lines 504
to 506.

Have not tried it yet  in middle of something else  if I delete those
three lines, the XVIGRID extent will still be very large.

Where can I find the syntax description so that I can intelligently edit it?

There are 8 numbers in a row.

Bruce

  _____  

From: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] On Behalf
Of Martin Sluka
Sent: Saturday, 5 October 2013 7:18 p.m.
To: List for Therion users
Subject: Re: [Therion] drawing files with unnecessary large extents created
by therion/topparser

Bruce, 

this is typical for PocketTopo and lines created by mistake, if one didn't
switched pen to moving mode before transport of PDA and PocketTopo created a
"missed" line somewhere in border of drawing area. It could be just one very
short and practically invisible line. Try open the xvi file by plain text
editor and find such a lose line.

m.

Oct 5, 2013 v 5:29 AM, Bruce <bruce at tomo.co.nz>:

There is something about the drawing extents that is not right.  Not sure if
it is just a gap in my Xtherion knowledge, or if there is something unusual
about how TopParser (and sometimes the therion convert) creates the files.

Can I fix it by manually changing something after the file is created?

Most times this does not happen with Therions converter.

Martin Sluka - Studio Sluka

prodej Hahnemühle DFA 

tisk fotografií a reprodukcí

Na Rovnosti 2692/21

130 00 Praha 3

tel.: +420 603513640

mail: martinsluka at mac.com

web: http://www.piezografie.cz

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Martin Sluka - Studio Sluka

prodej Hahnemühle DFA 

tisk fotografií a reprodukcí

Na Rovnosti 2692/21

130 00 Praha 3

tel.: +420 603513640

mail: martinsluka at mac.com

web: http://www.piezografie.cz

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