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Started by Boyd, December 27, 2011, 09:15:55 PM
Quote from: Boyd on December 28, 2011, 09:25:24 AMI'm not sure what you mean by "1 foot grid". I really haven't worked a lot with DEM in the past. I downloaded the LIDAR from USGS and in the examples above I used it in the raw format. The source resolution is ~3 meters/pixel (ie: 10 ft per pixel).
Quote from: Boyd on December 28, 2011, 09:25:24 AMI haven't yet looked at any LIDAR from mountainous areas. I'm thinking it might be a bit of a mess for generating contours however.... the "too much information" syndrome perhaps? LIDAR is a really different beast from 1/3 arc second data. But it's great around here where jmost of the elevations fall within a range around10-70 meters.
Quote from: Boyd on December 28, 2011, 11:36:07 AMOTOH, it may be that the GPS itself doesn't calculate with enough precision to do justice to 3m/pixel imagery. As discussed earlier, the .img format (as supported by cgpsmapper) supposedly maxes out at 5m/pixel....
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