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11
votes
9answers
10k views

Is there a comprehensive list of latitude and longitude values for cities around the world?

I'm developing an application that calculates the distance between cities using their respective Longitude and Latitude values. But the problem is where to get a comprehensive list of latitude and ...
6
votes
2answers
579 views

Managing error with GPS routes (theoretical framework?)

I'm looking for the appropriate theoretical framework or speciality to help me deal with understanding how to deal with the errors that the GPS system has - especially when dealing with routes. ...
7
votes
1answer
274 views

Is the software used in the “seabed UFO” video GIS software? If so, what is it?

The icons almost make it look like the software is ArcReader or an ArcEngine based, but it's hard to tell from the video. I supposed it could not be GIS software at all. Is anyone familiar with this ...
10
votes
3answers
2k views

Would it be possible to use geohash for proximity searches?

I'm looking to optimize point proximity geo searches time. My input is lat,lng point and I'm searching on a precomputed set of locations to n nearest points. I don't care how much time/space the ...
1
vote
0answers
250 views

system runtime error from ArcHydro [duplicate]

I am getting the below error during execution of archydro. "system runtime interoperservices com exception (0x80004005): error HRESULT E_FAIL" I tried all options available on internet to solve this ...