Thank you for your message, this helps alot. There is a way out tough, a middle ground: one can define custom maps in the thconfig file using source. I need to think about how this affects the projects structure. Besides that, is there a option to disable map-averaging and tell therion to use the scrap average for each scrap? That would solve this imho. Thanks, i understand i better now, how this works currently. Am 2019-05-31 21:22, schrieb Stacho Mudrak:
Hello Beni,
I am not 100% sure if I understand your problem correctly, but this is how therion does average altitude calculations:
the altitude of a scrap = arithmetic average of altitudes of its stations the altitude of a map = arithmetic average of altitudes of scraps
And your observation is correct. If you have some maps defined in your dataset, then maps of selected surveys are exported and sorted according to their altitudes. If you have no maps defined, then scraps in selected surveys are taken and altitude sorted.
So if you are working on a large dataset and you do not want to define upper-level maps, it is probably better not to define any maps at all - then only scraps will be taken into consideration.
Best regards, S.
On Fri, 31 May 2019 at 15:38, Benedikt Hallinger <beni@hallinger.org> wrote:
Hi Stacho, your infos did the trick. indeed the data showed at closer examination, that the parts where averaged lower than the part in question. The wrongly-lower part contains a steep slope but the average height was still some few meters below the average of the offending part.
What puzzled me was that even splitting the scraps was not enough! I now have a scrap containing only the sloped part of the tunnel, and that is surely averaged above the lower part.
What solved it was to also rearrange the map definitions that contain the sloped part: i put the low part prior the slope in question in another map like this: -------snip---------- # This works instead: map working-priortunnel scrap-low-tunnel-before-slope endmap map working-slope scrap-slope-itself-with-followig-high-part endmap
# this does NOT work lie intendet: #map notWorking-combined # scrap-low-tunnel-before-slope # scrap-slope-itself-with-followig-high-part #endmap -------snap----------
It looks like therion currently uses the average height of the MAP, not the contained scraps, to calculate which part is above or below. In this example, it looks like it is getting the average height of the "notWorking-combined" combined map and comparing this to the uncorrelated below-tunnel. If i put the "scrap-low-tunnel-before-slope" in its own MAP definition, the average calculation can only take the "scrap-slope-itself-with-followig-high-part" and thus resulting in a
much higher average height.
Can you confirm this from therions sourcecode, and is this really the intendet behaviour, since i think each scrap shopuld be averaged for
itself, regardless of its map allocation...?
Wih best regards, Beni
Am 2019-05-30 22:27, schrieb Stacho Mudrak:
Hello,
if you select just survey, then all maps consisting of scraps in this and sub-surveys should be ordered by average altitude. But this may easily cause that some overlapping is not done correctly. But it is also possible, there is some bug and it is not done correctly. Are you able to post some minimalistic sample, where depth sort fails?
The only way how to manually order maps in the output is to create upper-level maps (in your case probably what you mean by <region>-Hautplan) consisting of lower level maps in the correct order.
HTH, S.
On Thu, 30 May 2019 at 15:55, Benedikt Hallinger <beni@hallinger.org> wrote:
Hello there, i have a very large dataset here. It is organised by regions like this (but much more leaf objects and regions):
=====snip===== - survey TheCave - survey RegionWest - survey 1 - survey 3 - survey 5 - survey RegionEast - survey 2 - survey 4 - survey 6 =====snap=====
I currently work from bottom to up, that is i draw the individual surveys as scraps, based on original material (sometimes they are really large and cosnsist of several many scraps).
In each of they leaf surveys (the numbered ones) i make by convention a map called "<n>-Hauptplan". The main idea is that every leaf survey can be treaten modular and that i can compile varoius maps at upper levels (i.e regions).
Currently, the regions have no "<region>-Hautplan". When i use "select RegionWest.TheCave", therion is instructed to select all scraps below it. For the most part, this works like intendet and the overlappings are calculated correctly. There are some places however, where the upper
part of the passage is rendered below the lower part, which is wrong. This is with about 10-15% of the passages (so most is already ok).
I know from the manuals that therion does this "randomly" so there is no real way to adjust this from my perspective (placing the "input 2.th [1] [1]" command in the region.th [2] [2] file, wich then inputs the scraps etc, lower in the list does not help - it seems random where it is). I think, however, that it would be a very great addition, if there would be some code in the renderer, that sorts the vertical presentation of the scraps/maps by average altitude of said scrap/map, and that this
behavior is controllable by some configuration (cmdline option, or even better, thconfig parameter). => Is there maybe already something hidden like this i don't know so
far? That would be very great, because when i look at the dataset, i face
about 30-50 hours producing correctly manually sorted handcrafted maps at the region level...
Sincerely, Beni _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion
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