Cut at z=1.4000m disappearing builduings

All around LEONARDO 4 (and previous 2014)
Thiel
Posts: 10
Joined: Sun Aug 11, 2013 12:00 pm

Cut at z=1.4000m disappearing builduings

Postby Thiel » Fri Sep 06, 2019 8:16 am

Hi there,
In my Leo-map the buildings with a height of 8 or less meters are disappearing as soon as I cut the area (XY) at k=3 (follow terrain). It is written, that k=3 means z= 1.4000 m . I need the output of 1,80 m - human-head-height. Now I wonder why the buildings are disappearing, doesn´t z=1.8000 (k=4) means 1,80m? Such problems I never had with envi-met V3! Is it a bug? I double checked my area input (even though it´s made with monde, so there is no mistake)
What can I do ???
Thanks a lot!
Susi

Tim
Posts: 692
Joined: Mon May 15, 2017 3:46 pm

Re: Cut at z=1.4000m disappearing builduings

Postby Tim » Fri Sep 06, 2019 8:51 am

Hi Susi,

All your suggestions are correct. Are the buildings definitely built as follow terrain? Then, they should also be visible in 1.8 m above terrain in Leonardo. You might check that with 3D view in Leonardo or Spaces.
You could attach some screenshots and/or the INX file.

Best regards,
Tim

Thiel
Posts: 10
Joined: Sun Aug 11, 2013 12:00 pm

Re: Cut at z=1.4000m disappearing builduings

Postby Thiel » Fri Sep 06, 2019 9:13 am

Hi Tim,
OK here you go, what have I done wrong?

snip2.PNG

snip.PNG


P.S. A few days ago I asked some stuff about leonardo and why I can´t see a meta-data-file, I tried a lot and the only picture I can see, in a *.PNG with round about 800 KB, could it be, that the data-volume is limited?

Tim
Posts: 692
Joined: Mon May 15, 2017 3:46 pm

Re: Cut at z=1.4000m disappearing builduings

Postby Tim » Fri Sep 06, 2019 9:19 am

Hi,

Please check the file in 3D view in Spaces, I am pretty sure that the buildings do not follow terrain and thus vanish inside of the terrain but standing ontop of it with specified height.

I don't know why you do have those problems with the graphic overlay. I just tried a PNG file with 4 MB and 1600x1100 pixel and it loaded within milliseconds and scaled perfectly. I am at a loss what could be the problem for you.

Best regards,
Tim

Thiel
Posts: 10
Joined: Sun Aug 11, 2013 12:00 pm

Re: Cut at z=1.4000m disappearing builduings

Postby Thiel » Fri Sep 06, 2019 11:09 am

Hi, ok, the inx file is too big for sending, but in 3 D I have my buildings in space and leo! If I do not follow the terrain, all buildings are gone... took a snip...

I send you the PNG I want to put in the background, could you please try it in any kind of your Leomaps? I´m a bit sad, cause it´s the businesses version, should work- I think!
Attachments
snip 3D.PNG
snip 3D Leo.PNG
Modellgebiet Vereint.png
Last edited by Thiel on Fri Sep 06, 2019 12:08 pm, edited 1 time in total.

Tim
Posts: 692
Joined: Mon May 15, 2017 3:46 pm

Re: Cut at z=1.4000m disappearing builduings

Postby Tim » Fri Sep 06, 2019 11:20 am

Hi,

Please open the 3D view of the DEM in Spaces to see if the buildings are inside of the terrain. You may zip the INX file and upload it then. That might work.

About your Leonardo problem with the picture: You named the file with a blank space! That does not work. Please name it somehow without space in between and it loads perfectly fine. I'd recommend in general to never use spaces in filenames or directories since that can cause issues with several programs.

Best regards,
Tim

Thiel
Posts: 10
Joined: Sun Aug 11, 2013 12:00 pm

Re: Cut at z=1.4000m disappearing builduings

Postby Thiel » Fri Sep 06, 2019 11:59 am

Hi Tim,
many thanks, you solved my Leo-problem!!! :)
unfortunately are my buildings in the DEM correct.

Tim
Posts: 692
Joined: Mon May 15, 2017 3:46 pm

Re: Cut at z=1.4000m disappearing builduings

Postby Tim » Mon Sep 09, 2019 1:34 pm

Hi,

We finally managed to understand your issue. Because of Splitting, the lowest 5 grid cells (mostly inside of terrain) have a resolution of 40 cm whereas the rest has 2 m. If you cut with follow terrain, the grid cells above terrain are counted and shown.
Example: k = 3 means at cell with DEM of 0 m height a resulting height of 1.4 m above ground. The same k level 3 with a terrain of e.g. 5 m means we have a resulting height of 8 m. That is why the buildings vanish in that k levels.

In general, we would not recommend to use splitting in DEM simulations. It takes more computational time but most of those splitted cells are located inside of terrain (which are then unnecessary). In this specific case it makes it even confusing to analyze the results.

Best regards,
Tim

Thiel
Posts: 10
Joined: Sun Aug 11, 2013 12:00 pm

Re: Cut at z=1.4000m disappearing builduings

Postby Thiel » Tue Sep 10, 2019 10:08 am

Hey Tim,
fantastic! many THANKS!!!! Very well, I´ll do as you´d explained me, thanks a lot.
Would you please deleate my simulation files?! Or can I handle that on my own?
Susi

Tim
Posts: 692
Joined: Mon May 15, 2017 3:46 pm

Re: Cut at z=1.4000m disappearing builduings

Postby Tim » Tue Sep 10, 2019 11:14 am

Hi Susi,

You are welcome. I deleted them.

Best regards,
Tim


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