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Can't get any height out of my buildings...

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unitedstates
Created some nice size rectangles and I have been trying to get 4-8 story buildings out of them with no luck. Always coming out 1-2 stories.

1. Creating this on top of photoreal scenery (no issues with landclass, right?)
2. Using SETAGNBUILDINGHEIGHT|FROMFILE=Downtown.shp;*|0.0;0.0;1.0;1.0
The four sets of numbers are: 1-2 / 3-4/ 5-6/ 7+ floors right? (or there abouts). That is to say, taller buildings should have numbers skewed more towards the right-side , correct?
3. Tried some different roofs and some different side building textures

So far no luck... where am I going wrong here?

Thx
 
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unitedstates
Could someone using scenPROC verify that building height is working. Take a building or a group of buildings and try the smallest setting and the tallest setting.
I have put in:

SETAGNBUILDINGHEIGHT|FROMFILE=Downtown.shp;*|1.0;0.0;0.0;0;0 for the lowest height

and then went to the other end of the scale

SETAGNBUILDINGHEIGHT|FROMFILE=Downtown.shp;*|0.0;0.0;0.0;1.0 for the tallest

and I am not seeing any changes taking place. I know it's a "sliding scale" but I should see some changes? Probably something wrong on my end but just trying to verify.

Thanks,

CLutch
 
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1,095
Wouldn't the height settings show up in Annotator's Properties?
Just be aware that there's a sweet spot for taller building footprints, too big or too small and they'll revert to 1/2.
 
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Thx for the reply. Sounds like you are saying take a look at the data using the Autogen Annotator? If so I was not using AA just scenPROC. (haven't looked at that tool in years. Maybe I need to break that out?) But even if it came out at 1/2 that means I would see at least some buildings at 3-6 stories maybe. All are 1-2?
 

arno

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Hi,

How big are your polygons? As mention before if the width is less than circa 20 meters you never get more than 1 or 2 floors. And very big buildings fall into the warehouse category, these are also low.
 
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unitedstates
I am creating footprints off an image of a little southwest US city, Albuquerque, New Mexico for testing. I am not using annotator but Adobe Illustrator to quickly create a few rectangle shapes. Export them as DXF. Convert that to SHP in QGIS and they show up nicely. Had to add back in LAT/LON. And they seem to process ok in scenPROC.

The shapes I created should equal about a typical 4-8 story building I would think (and just checking with photos). They are larger than houses or 20 meters. I also created several large warehouse footprints in an industrial area. Now those warehouses do appear at 1-2 stores as expected. It's just every building turns out as 1-2 stories no matter what I set the heights to?

I have attached the file(s). It has proper coordinates but would need to add projection.
 

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  • DowntownBuildings.zip
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unitedstates
Ok, I think I found what is going on here. If I put in the line as such:


SETAGNBUILDINGHEIGHT|*|0.0;0.5;0.5;0;0

It will work and give me good building height. However if I try to tell scenPROC which shp file to set the heights to like:


SETAGNBUILDINGHEIGHT|FROMFILE=Downtown.shp;*|0.0;0.0;0.0;1;0 or

SETAGNBUILDINGHEIGHT|FROMFILE=Downtown.shp|0.0;0.0;0.0;1;0

I get no height change and scenPROC reports it as:

"Set autogen building heigth to 0 cells"


So is this a bug or am I asking for an option that is not available? If this is not a bug can we add it it as an option as I would like to run several different files at once each with their own height settings.
 

arno

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Hi,

Might be a bug. You downtown file contains polygons?
 
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As an update, yes the downtown does contain polygons. I noticed that if I use a step such as

"SETAGNBUILDINGHEIGHT|"SETAGNBUILDINGHEIGHT|FROMFILE=Downtown.shp|0.0;0.0;0.0;1;0"Downtown.shp|0.0;0.0;0.0;1;0"

it will result in "Set autogen building height to 0 cells", however if I use:

"SETAGNBUILDINGHEIGHT|*|0.0;0.0;0.0;1;0", it will work correctly. This is only if I am using one imported SHP file. If I use more than one SHP file I can separate them with the "FROMFILE=" attribute and it appears to work correctly.

Just double-checking. I think you said only one height can be set per one 1.2km autogen tile? Or can they be broken down by shp file?
 

arno

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Let me check if a bug slipped in then.

The height is set per autogen tile indeed. So if you test against polygons the tool checks if the centre of the tile is inside the polygon.
 
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