Aboutvahab48_Sajadi Expertise General questions on GIS theory and application.
Esri based GIS softwares including: ARCGIS , ARC/INFO, ARCVIEW, 3D Analyst, Network Analyst, Spatial Analist,Avenue programming language.
Experience I have been working on GIS for 13 years, on various GIS projects, teaching, programming and developing GIS models
Publications 1- Article entitled "Application of GIS in soil survey project", presented and published in the procceedings of GIS'95 International Symposium in Vancouver, Canada
2- Educational booklets on GIS theory and application
Question QUESTION: I have a topographic map (raster) and a number of other raster files, such as vegetation and buildings. I am trying to combine the heights of the structures and vegetation with the elevations on my topographic layer so that I can complete a visual analysis - can you see buildings beyond the trees on a hill etc. How do I go about combining these rasters based on height and elevation to create one overall raster that i can use for visual assessment.
thank you
Jay
ANSWER: Hi Jay,
The best way to visual assessment of your dataset is to create a tin file of the topographic map and adding the tin file, the vegetation and the buildings (as vector shape files) to ARCSCENE . Then, In Arcscence , you should define the BASE HEIGHT of the vegetation and building shape files as the created tin file. To do so, right click on each of the shape files, select "properties, select "Base Height" tab, select the tin file as base height. This procedure will "drape" the shape files on the surface of the ground which is introduced as tin.
Good luck
Sajadi
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QUESTION: Hi Sajadi,
I don't have ArcScene. The only ad-on I have with ArcMap is Spatial Analyst. Is there any way that I can still do what I need to without ArcScene or 3D Analyst?
Jay
Answer Without Arcscene, the only thing you can do is to give "height" to your vector shape files (buildings, etc). That means the height of buildings are calculated on the basis of your ground raster file.
To do this , follow the following procedure
3D Analyst tools--> Functional Surface--> Interpolate Shape.
Anyway, the result will not give you a real visual 3D assessment. That means you still see a plane view of ground with building and other shape files on it. (in Arcscene, you could see a realistic 3D view, being able to turn the view in different directions, change the angle of the view, and even simulate "fly" on the ground.
Sajadi
