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There are a couple options, actually. Use Clip to trim the raster of interest (e.g. DEM) to only the area that you want to analyze. Advantage: you have a permanent feature that you can always use -- good for repeated analyses over the same area. Disadvantage: duplicate rasters consume file space and/or can get confusing. Set the appropriate ...


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You might want to checkout the MapBox Satellite layer. It's available under their Basic Plan, which is $5 a month. I believe the layer is distributed as TMS tiles, and you can review the granularity and coverage of the layer before you commit to anything. Admittedly, though, this would be more difficult to apply to your use case, but surely not impossible, ...


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My solution to this was kind of a kludge, but then I was doing a small class project working with a subset of one county's roads so the network wasn't that big and I didn't need to do it as a common task. I just ran a service area analysis with the time set large enough that in theory everything should be reachable. That highlighted everything that was ...


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The Copernicus project of ESA is supposed to be freely downloadable, when it's running...


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Commercial satellite imagery can be purchased either from archives or ordered as tasking for anywhere in the world through DigitalGlobe/GeoEye who have recently combined their constellation of satellites. Imagery is usually at 50cm or 60cm. You can actually get 8 band imagery in many cases, which would allow more specific classification. They even have ...



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