Extract max (or min) of a polygon
Hi all.
I am going to extract the max height of each building in a residential zone. I have the shapefile of the zone as area feature.
Can anyone help how to do it using GM.
Thanks
Answers
-
Hi,
You need to load your DSM elevation grid, select the polygons, right click and use this:
From the generated attributes, maximum elevation is MAX_ELEV_M
For the minim you need to load the DTM elevation grid and do the same only keep MIN_ELEV_M.
-
Thanks a lot. Very much appreciated.
It is a very useful way. I used it, and it is really helpful.
I also used this way to assign the maximum and minimum heights of the flood that each building (Area-shape) experiences.
The DEM of the flood-map (tif file) is loaded as topography, and the procedure is followed. GM also offers to generate the MIN and MAX heights as the new point features, which is an advantage.
Categories
- 12.9K All Categories
- 5.7K Features Discussion
- 346 Downloading Imagery
- 1.3K Elevation Data
- 385 Georeferencing Imagery Discussion
- 645 GM Script Language
- 54 User Scripts
- 115 GPS Features
- 419 Projection Questions
- 831 Raster Data
- 1.4K Vector Data
- 6.6K Support
- 180 Announcement and News
- 928 Bug Report
- 561 SDK
- 1.2K Suggestion Box
- 3.7K Technical Support
- 576 Other Discussion
- 132 GIS Data Sources
- 27 Global Mapper Showcase
- 243 How I use Global Mapper
- 108 Global Mapper Forum Website