OpenStreetMap
I spent a little while the last two evenings using the new Digital Globe Premium Imagery for Turkmenistan to clean up some parts of Ashgabat plus areas in the far southeast I visited some months back but was unable to map in detail. This new imagery is terrific. I corrected some rail lines and added rail spurs to factories I either visited or rode past, plus added streets. This is good stuff.
讨论
Claudius Henrichs 于 2018年01月 9日 13:59 的评论
How is the alignment in urban and rural areas of Turkmenistan in you experience? I found it to be generally much more consistent and less skewed than a lot of previously available imagery.
apm-wa 于 2018年01月 9日 14:52 的评论
Claudius, I agree with you that the alignment is better, much better. Not perfect across all locales but much better. Where possible I collect GPS traces and make them public to ease alignment.