[Therion] Declination and coordinate systems
Hi I have been under the impression for the last couple of years, that the presence of a cs command in a high level *.th file (say an INDEX.th that ties together all the sub-surveys) would override any declination statements within the sub-survey *.th files. On investigating a peculiarity I find that the declination statements are overriding the cs statements, and that The Therion Book suggests this is the intended behaviour, as far back as 5.2.2 anyway. Has this behaviour changed since 0.5.x or is this a faulty memory relic of mine from my first dazed days as a Therion user? I guess this means I need to comment out all those approximate declination statements now! (Of course it is probably too late to change it now, but it would suit my workflow for drawing projected elevations (from paper sketches) if cs always overrode declination) Historical recollection anyone? Bruce -- next part -- An HTML attachment was scrubbed... URL: <http://mailman.speleo.sk/pipermail/therion/attachments/20100223/b9525886/attachment.html>
[Therion] FW: export bbox
> supported syntax is > export map -output foo.bbox > thbook will be corrected. Thanks for pointing it out. Thank you, it works! I was surprised however that it appears to be latitude and longitude, when in my thconfig I have ... cs EPSG:27200 #NZ Map Grid 1949 ... to specify the output co-ordinate system. Is this intended and if so why? And to remind about a previously mentioned request, perhaps it is possible in due course to include the output co-ordinate system in this type of output (along with caves html, map and atlas pdf output headers)? Bruce
[Therion] FW: export bbox
On Tue, Feb 23, 2010 at 7:41 AM, Bruce wrote: >> supported syntax is >> export map -output foo.bbox >> thbook will be corrected. Thanks for pointing it out. > > Thank you, it works! > I was surprised however that it appears to be latitude and longitude, when > in my thconfig I have  ... > > cs EPSG:27200 #NZ Map Grid 1949 > > ... to specify the output co-ordinate system. > > Is this intended and if so why? Yes. Otherwise you would need to add coordinate specification to the file and use coordinate transformations for further processing. The main purpose of the file is to specify an area for which other specialized programs automatically create digital elevation model or download surface map from map server. One such program might be included in future therion (as an xtherion plugin perhaps). > And to remind about a previously mentioned request, perhaps it is possible > in due course to include the output co-ordinate system in this type of > output (along with caves html, map and atlas pdf output headers)? Yes, it is planned. Martin
