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Worked it out, I just drew a polygon around the catchment, added a field called HEIGHT, and then used the field calculator to give me the height I wanted (872m). I then generated a tin from that polygon and then used the surface difference function with the reference surface being the tin I created from the contours to find out where the new tin was above, ...


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gpsvisualizer.com will do what you want, and much more. Among the capabilities are adding elevation data from various sources, conversion to kml, and plotting on Google maps. It will accept a wide variety of inputs including gpx and raw lat/lon lists.


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For anybody who's interested, here's a modified version of JamesS code creating perpendicular lines using numpy and osgeo libraries only. Thanks to JamesS, his answer helped me a lot today! import osgeo from osgeo import ogr import numpy as np # ############################################################################## # User input # Input shapefile. ...


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You can get the Z value clicking on the map. Take a look at the showQueryResult function for more info.


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ArcGIS for Maritime: Bathymetry is a new component of the ArcGIS for Maritime platform available with the ArcGIS 10.1 for Desktop release. The software is developed for management and analysis of bathymetric data. Digital Coast is an excellent resource for such data. Not only is digital coast an excellent data resource it is also an excellent training ...



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