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I believe this code solves the problem, although it is a bit ugly. It creates a binary raster with 1 values for each null cell in my HAND raster. I then used a cursor to retrieve the count field for the binary raster's table and compare that to the count from the previous iteration in a while loop. The loop ends when the count stops changing (it may be that ...


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The EPA has a power profiler service that allows you to find out "how clean" the power you are getting is. It profiles the percent of power coming from each type of power generation per zip code. Unfortunately, I cannot find any place to get the data for all zip codes at once. Alternatively, there are downloadable databases that profile power subregions and ...


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Ok I know of two products that may help you. This site gives all the grunt work for the hydrologiclly correct layers you would require to conduct such an analysis. The Open-source Water Observation and Information System (WOIS) is now active in Africa. Is is compiled using open-source GIS (link) and includes modules for TSS. It is not a project for ...


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I am not sure if you have check this out ? http://www.diva-gis.org/ ? http://www.diva-gis.org/gdata How about this ? http://www.infrastructureafrica.org/documents/tools/list/arcgis-shape-files This might help you to browse around in Africa. http://wikimapia.org/#lang=en&lat=12.983148&lon=9.755859&z=3&m=b&search=Africa


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I just discovered a solution, pretty straight forward: I am using QGIS 2.6, and the plugin builder 2.0.3 -- both downloaded within the last couple of weeks. The plugin builder creates a "resources.qrc" file, while creating a main script with this reference: import resources_rc at line 27 Until I removed the trailing "_rc" in the main script, I also did ...


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You will likely encounter difficulties obtaining this information due to security concerns. I was looking for some information from the national dam inventory. At the time, the information was on a public facing site but required an ACOE account to access it. I also recall reading a fairly recent article about the NID being hacked, possibly by a foreign ...


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In general, to create a map of sinkholes using a DEM, you would first fill the topographic depressions (sinkholes) then difference the original DEM from the filled DEM. This gives you 'depth in sink' but if you simply want a Boolean sink map, reclass the depth map such that 1 is assigned to all values greater than 0. The tool in GRASS GIS to fill depressions ...


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PF is the profile flow. The idea is that it represents the flow through the reach (designated in the geometry, which can be constructed in arc using GeoRAS) at a given time (e.g. time of peak flow). If you have done hydrologic modeling using HMS the flow values can be imported using the DSS file structure. The other common way to populate these flows is ...


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This is not the answer for your question but may be for your problem. I would populate stream raster, for each point (cell) in streams populate watershad. Within populated watershads, iterate trough all points and calculate HAND something like: cell_value - min(watershad).


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Dijkstra might be unneeded because river networks (on a larger scale) have only 1 possible route. If you're into databases, postgis might be your friend here. There's a nice example here from Paul Ramsey explaining on how to iterate through a river network: http://blog.cleverelephant.ca/2010/07/network-walking-in-postgis.html Chrs, Tom



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