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How to apply different rates of change to different parts of the building?

Question asked by tjiang03 on Jan 23, 2016
Latest reply on Feb 1, 2016 by tjiang03

Hi guys,

 

The grids in the following picture is the .shp file which is exported from ArcGIS. Then I read the MEAN_Z attribute from the Object Attribute and attributed it to the following grids.

 

After that I obtained the building in the following picture. Now my work is to modify this building. First I want to change the heights of different parts of the building. My problem is how to apply different rates of change to different parts of the building.

 

I tried to write the code like this:  attr MEAN_Z

                                                     attr height= MEAN_Z*0.5;

but the result is the height of the whole building became 0.5 times than before which is not what I need.

 

How can I divide this building into different parts based on so many grids and how can I apply different rates of change to different parts?

I think you guys are more professional than me and thank you for your help

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