January 2007 - Therion

Re: [Therion] therion notes
by Ladislav Blazek 18 Mar '08

18 Mar '08

http://search.cpan.org/dist/HTML-WikiConverter-DokuWiki/ HTML::WikiConverter::DokuWiki adds the DokuWiki dialect to HTML::WikiConverter allowing the conversion of HTML to DokuWiki markup. Usage: html2wiki --dialect DokuWiki input.html > output.wiki L. marco napsal(a): >> really nice documentation. What about migrate this to therion wiki > pages? > > i would like to have a wiki output filter, > but i never had enough motivations to put my head to it. > do you c++ ? > > marco > > -- Ladislav Blazek

8 15

Tex memory exceeded
by Wookey 20 Mar '07

20 Mar '07

I just added 20 cross sections and now my map fails to process with: converting scraps ... done making map ... done This is pdfeTeX, Version 3.141592-1.21a-2.2 (Web2C 7.5.4) entering extended mode (./data.tex (./th_enc.tex) (./th_texts.tex) (./th_resources.tex) (./th_fontdef.tex{/var/lib/texmf/fonts/map/pdftex/updmap/pdftex.map}) (./th_formdef.tex Runaway text? ! TeX capacity exceeded, sorry [main memory size=1000000]. l.47627 \PL{ 249.81 181.74 250.44 181.80 250.46 182.14 c}% If you really absolutely need more capacity, you can ask a wizard to enlarge me. Here is how much of TeX's memory you used: 292 strings out of 97341 2961 string characters out of 1211748 1000001 words of memory out of 1000000 Do I really need to change this (how?) or is it probably something else that has gone wrong? That 'runaway text?' looks suggestive. What I really need to know is how to debug it. I ran therion -d so now I have a /tmp/thTMPDIR full of mysterious stuff. Attached is data.tex from there, which seems likely to be relevant. Is that enough to determine what broke? The current full dataset is in svn at wookware.org, which MartinS now has access to. And whilst I'm here: I would also note that adding scraps in a 900-line file is almost unbearably slow on a 900Mhz machine. It feels like something in the code does a linear search so it gets slower and slower to add each line/item. ctrl-r produces about a 15-second wait. I supppose I should just have put all the x-sects in another file. Wookey -- Aleph One Ltd, Bottisham, CAMBRIDGE, CB5 9BA, UK Tel +44 (0) 1223 811679 work: http://www.aleph1.co.uk/ play: http://wookware.org/

3 10

metapost symbols
by Stefan Oswald 14 Feb '07

14 Feb '07

Hello, here are the results of our Therion meeting yesterday; An idea would be to add the factor for density/size of symbols in the source code and adjust these variables in the map editor by a -density {} command in the mapeditor\area\options. Also a -diameter {} command for block points would allow to change block size of each point individually. #POINT BLOCK +size adjust (symbolsize) code metapost def p_blocks_UIS (expr pos,theta,sc,al)= symbolsize:=1.0u; %Factor*u; Factor=size of the blocks U:=(.5u,.5u); T:=identity aligned al rotated theta scaled sc shifted pos; pickup PenC; thdraw (.0symbolsize,.0symbolsize)--(1.0symbolsize,-.5symbolsize)--(0.0symbolsize,-1.5symbolsize)--(-1.0symbolsize,-1.0symbolsize)--cycle; thdraw (.5symbolsize,-.25symbolsize)--(1.0symbolsize,.5symbolsize)--(0.0symbolsize,1.5symbolsize)--(-0.5symbolsize,.5symbolsize); thdraw (.0symbolsize,.0symbolsize)--(.0symbolsize,.5symbolsize)--(-1.5symbolsize,.5symbolsize)--(-1.5symbolsize,-0.5symbolsize)--(-0.5symbolsize,-0.5symbolsize); enddef; endcode #AREA BLOCK +density adjust (distance) code metapost def a_blocks (expr p) = distance:=1; T:=identity; pickup PenC; path q, qq; q = bbox p; picture tmp_pic; uu := max(u, (xpart urcorner q - xpart llcorner q)/100, (ypart urcorner q - ypart llcorner q)/100); tmp_pic := image( for i = xpart llcorner q step distance*uu until xpart urcorner q: for j = ypart llcorner q step distance*uu until ypart urcorner q: qq := punked (((-.5uu,-.5uu)--(.5uu,-.5uu)--(.5uu,.5uu)--(-.5uu,.5uu)--cycle) randomized (uu/2)) rotated uniformdeviate(360) shifted ((i,j) randomized 1.0uu); if xpart (p intersectiontimes qq) < 0: thclean qq; thdraw qq; fi; endfor; endfor; ); clip tmp_pic to p; draw tmp_pic; enddef; endcode greetings, Stefan

3 2

Cave Overlays on Google Maps Web Sites
by Bill Chadwick 02 Feb '07

02 Feb '07

Hi, It is quite easy to create a web page that shows a cave survey overlay on top of Google / Virtual Earth maps. For an example go to http://www.bdcc.co.uk/mendip.html?Latitude=51.2988&Longitude=-2.7104&Zoom=18 &MapType=Aerial and then select Caves in the overlays drop down (best in Firefox). You will find overlays for Upper Flood (exciting new extensions), Swildons Hole, Manor Farm and Longwood August. I use the Microsoft MapCruncher to generate the tile sets (256x256 pixel PNGs) for Google Maps from a single PDF or .png image. As this is quite a nice way of presenting cave surveys, perhaps a Google tile generator would be a good add on for Therion. The advantage of building the renderer into Therion would be that the overlay could be drawn separately for each Google Zoom level to achieve a good line width and text size. I am well informed in the areas of coordinate systems and map projections and able to program in C++. With some guidance I might be able to help with the coding of such an extension. Regards, Bill Chadwick

9 17

wikipedia and cave surveying
by Julian Todd 31 Jan '07

31 Jan '07

Hi folks, Anyone out there want to join me in trying to organize the caving content for wikipedia?? There's quite a bit of material floating around. Get an idea by drilling down from: http://en.wikipedia.org/wiki/Category:Caves_by_country The problems include the lack of a special page for cave surveying, wherein some excellent examples of very old and new surveys should be uploaded to show off their artistic and historical value. Also, there needs to be an infobox to make all the pages beautiful. Further details are noted at: http://en.wikipedia.org/wiki/User:Goatchurch#Caves Julian T.

2 1

An extended elevation problem
by Eric Madelaine 22 Jan '07

22 Jan '07

Hello guys, I have a problem with a cave on which I would like to have a partial extended elevation. The cave is small, but the centerline has a loop, and when I compole an extended elevation, even with half of the loop flagged with a "extend ignore", Therion thinks that the stations in my extended view are very far, as if it did extend using another branch of the loop... Is there a trick to do a partial extended map ? (well, may be I could do an elevation instead, but this is not what I wanted from the beginning...) How could I do several extended maps for different parts ? Eric.

2 1

Flowstone problems
by Joke Vansweevelt 16 Jan '07

16 Jan '07

I'm working on a topo of a water-cave and I have two questions. - How can I stop a flowstone-feature to be filled with water? (In the water, defined by "area-water", I sometimes have features that I would like to stay clear of the water-filling-stripes. If I try to include the borders of this feature as borderlines of my "area-water", usually my whole image gets distorted (not-water areas suddenly become partly filled with water-filling-stripes etc.). It doesn't work either by defining these features as an area within the area-water (error). Objects defined by rock-border don't have to be specified as area border. Rocks are automatically not filled with water-filling-stripes. However, in the case of flowstone features, I would like to be able to define whether they should or should not be filled with water-filling-stripes. In case it isn't possible so far, a solution could maybe be to define flowstone that doesn't need to be filled with water as "line-rock-subtype flowstone"?!?) - How can I get the borders of "line-flowstone" in my X-Therion drawing to match the borders of my flowstone-feature in the produced pdf-file? (When some of my area borders are defined as "line-flowstone", in the produced pdf-file, the water tends to invade my flowstone (as far as the borders of the "line-flowstone" that I set within X-Therion). The problem here is that the produced drawing of the flowstone lines is larger than the borders one sets in X-Therion (the scale that I work with for the pdf-file is 1 1000). Regards, Joke

3 2

Making map with centreline and scraps mixed
by Wookey 08 Jan '07

08 Jan '07

I wan't to make a large area overview map. We have centreline data for all of it, but only some caves have been drawn in therion. How (is it possible) to show the caves with therion data in outline form (i.e. walls only), but the other caves in centreline-only form. I can get it with them all showing centreline and therion caves showing walls, or walls only, and nothing at all for centreline-only caves, but not what I want. Does the revise command help here? I know select terikanplan(a)terikan.Mulu selects the map terikanplan but I'm not sure what the correct syntax for selecting a centreline is: would it just be terikan.Mulu? or terikan@mulu? Wookey -- Aleph One Ltd, Bottisham, CAMBRIDGE, CB5 9BA, UK Tel +44 (0) 1223 811679 work: http://www.aleph1.co.uk/ play: http://wookware.org/

3 3

Moving section of cave aside
by Wookey 08 Jan '07

08 Jan '07

For drawing complex caves it is often useful to move a section of cave to one side so it doesn't obscure the passage below. I can't see an easy way to do this in therion, because everything is always positionned according to stations. Could we have some kind of scrap offset feature that would allow a scrap or map to be drawn in a different place? It would also be nice to have the scrap shown in outline (or shaded, etc) in the correct place, so the survey can be properly understood. e.g. the terikan survey has numerous layers but also plenty of whitespace to move upper layers into so as to draw it all on one sheet but without complex overlapping passage. This is an alternative to the atlas scheme which therion has excllent support for. this alternative is very popular in the UK, and probably other places - it would be gfood if therion could support it. It is useful for a very long thin cave, where you can get much better paper use by drawing the sections side-by-side instead of as a very long thin page. (e.g. this very long thin cave: moon cave: http://mulucaves.org/Pub_surveys/Moon_CaveBCRA.pdf) Wookey -- Aleph One Ltd, Bottisham, CAMBRIDGE, CB5 9BA, UK Tel +44 (0) 1223 811679 work: http://www.aleph1.co.uk/ play: http://wookware.org/

2 2

changing page size in atlas
by Wookey 08 Jan '07

08 Jan '07

I tried to make an atlas with A3 sized pages, portrait mode so set size 42 29.7 cm in my layout. This resulted in a lot of errors: Normal \count register pool exhausted, switching to extended pool.) (./th_pagedef.tex) (./th_pages.tex [1] Overfull \vbox (239.1945pt too high) has occurred while \output is active [2] [3] Overfull \vbox (239.1945pt too high) has occurred while \output is active [4] [5] down to [48] (see the transcript file for additional information)</usr/share/texmf-tetex/fon ts/type1/bluesky/cm/cmsy10.pfb></usr/share/texmf-tetex/fonts/type1/bluesky/cm/c mss10.pfb> Output written on data.pdf (48 pages, 2430010 bytes). In the finished atlas every other page is blank, and I get no navigator. Is this a bug, or did I do something wrong? Wookey -- Aleph One Ltd, Bottisham, CAMBRIDGE, CB5 9BA, UK Tel +44 (0) 1223 811679 work: http://www.aleph1.co.uk/ play: http://wookware.org/

3 3