Arbitrary surface creation
Hi all. I have a large pit void out of the top of a hill that I have modelled. The client has requested an estimate of the total volume of material removed from the original surface profile. I therefor need to recreate a dome shape above the pit void. Any ideas how to do this in GM please?
Comments
-
Hi MartecA,
I sometimes face the same problem. You need to create original ground contours above the pit void. Ideally you will have these from a pre-mining survey or perhaps from a public domain source (SRTM?). If not, you can create approximate contours by examining adjacent un-mined slopes and assuming that the area over the pit has similar slopes. However you should note that this will only give you a rough estimate.
If you could post the DTM/elevation grid that you are using I may be able to help you better.
Cheers,
/al
-
Thank you Al.
Categories
- 12.6K All Categories
- 5.5K Features Discussion
- 337 Downloading Imagery
- 1.3K Elevation Data
- 379 Georeferencing Imagery Discussion
- 620 GM Script Language
- 52 User Scripts
- 113 GPS Features
- 405 Projection Questions
- 815 Raster Data
- 1.3K Vector Data
- 6.5K Support
- 172 Announcement and News
- 900 Bug Report
- 558 SDK
- 1.2K Suggestion Box
- 3.7K Technical Support
- 559 Other Discussion
- 129 GIS Data Sources
- 27 Global Mapper Showcase
- 231 How I use Global Mapper
- 106 Global Mapper Forum Website