drawing up - seeking advice

[Densham, CJ (Chris)]

Patrick,
You could always ask Julian Todd about his tunnel program. 
He was showing it at Bull Pot Farm this New Year. He sent me these
instructions:
Chris

Here's the mostly full instructions (not quite up to date from last 
iteration). 

http://www.goatchurch.org.uk/tunnelx/tutorial/tutorial.html

The index page is:

http://www.goatchurch.org.uk/tunnelx/index.html

Here's the source code of more recent version. 

If you follow the instructions for downloading, (and install java1.4, or 
whatever is most recent) you should be able to compile and run from 
this.  One idea: Burn the java and tunnel and the webpage onto a CD so 
you can put it onto other computers. 

> -----Original Message-----
> From: Matt Ryan [mailto:matt-survex@mdryan.net]
> Sent: 27 March 2004 19:16
> To: Patrick Warren
> Cc: survex@survex.com
> Subject: Re: drawing up - seeking advice
> 
> 
> > Have you got any wise advice how to get the passage
> > walls + other details into a computer in a manageable
> > form?  Hopefully without too much expense on CAD
> > packages!  (Assume I can use unix, or MS windows)
> 
> We routinely draw up A1+ size surveys.  Since what you draw is mostly
> vectors you don't have too much of a problem with memory - 
> you only ever see
> / use part of the scan at once to trace from.
> 
> Our technique is to print the centreline on lots of sheets of 
> A4 then tape
> together and draw up before scanning and digitally tracing 
> before adding
> labels etc - this way you only need to have a couple of A4 
> bitmap tiles
> turned on at any one time.  If by any chance you do have the 
> means to scan
> your entire drawn up survey in one go then whether or not you 
> cut it up
> digitally you will save the first step exporting the Survex 
> centreline at
> the target scale onto a single sheet of paper the right size 
> and using this
> as a base layer to line up the scans.  We're currently using 
> Illustrator for
> tracing (some passage detail textures at www.hongmeigui.net) 
> though have
> used all sorts of things in the past, PSP included.
> 
> If you don't mind the VERY steep learning curve then Therion 
> is quite a nice
> way of drawing up caves - allegedly.
> 
> FWIW Peak Cavern is drawn up in Autocad and I think Easegill 
> is in Corel
> something or other.  A lot of the Chinese use GIS software - 
> it's a bit
> cheaper when you don't bother paying for it...
> 
> Incidentally, has anyone ever drawn up a reasonable size cave 
> in XFig ?
> I've not played enough to know if it'd be a goer or not but 
> it seems the
> fastest way of tracing passage walls I've ever come across.
> 
> -Matt
> 
> -- 
> Matthew Ryan
> www.mdryan.net
> 
> 
> -- 
> Survex http://lists.survex.com/mailman/listinfo/survex
>