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
- 12.4K All Categories
- 5.4K Features Discussion
- 314 Downloading Imagery
- 1.3K Elevation Data
- 377 Georeferencing Imagery Discussion
- 603 GM Script Language
- 49 User Scripts
- 112 GPS Features
- 394 Projection Questions
- 800 Raster Data
- 1.3K Vector Data
- 6.5K Support
- 161 Announcement and News
- 890 Bug Report
- 556 SDK
- 1.2K Suggestion Box
- 3.7K Technical Support
- 537 Other Discussion
- 128 GIS Data Sources
- 26 Global Mapper Showcase
- 224 How I use Global Mapper
- 104 Global Mapper Forum Website