Distorted DEM files
Hello
I have always had trouble with Global Mapper distorting my files vertically. For example, our county is 42 across and 30 miles north-south. When I download the county 2M DEM and measure it with the Global Mapper tool it measures 42 x 30 miles, however the actual area I am looking at is only 42 x 15 miles. The Y axis is stretched by a factor of 2. The shape of the county appears correct but I only have half the data. The bottom half is chopped off and the remaining top half of the county stretched to the proper outline of the county. Do I have a setting wrong?
Dave
I have always had trouble with Global Mapper distorting my files vertically. For example, our county is 42 across and 30 miles north-south. When I download the county 2M DEM and measure it with the Global Mapper tool it measures 42 x 30 miles, however the actual area I am looking at is only 42 x 15 miles. The Y axis is stretched by a factor of 2. The shape of the county appears correct but I only have half the data. The bottom half is chopped off and the remaining top half of the county stretched to the proper outline of the county. Do I have a setting wrong?
Dave
Comments
-
What version of Global Mapper are you using?
What on-line data source are you using to download the DEM? What bounds did you specify? -
I am using Ver. 9.03. The website did not provide a chance to enter bounds. It was a county download.
This is the link to the data source. It is the Knox2m.zip link.
http://dnr.nebraska.gov/embedded-ftp-folder?id=dems/LiDAR_2011
The Meta data is at this link http://dnr.nebraska.gov/2011-lidar-nrcs-metadata
-
I'm positive that you're using a cracked version from GlobalMapper. Since v9 is from late 2008 and there a quick google search provided me with information for cracking v9.03.....
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