To solve this problem, you need to overlay the Soviet map datum (Pulkovo 1942 Krasovskii spheroid if you’re interested to know) with a datum that the GPS can use (e.g. So you cannot turn on your GPS, get a grid ref off it, then use that to place your location on the Soviet map. grid system) that isn’t available with our GPS (or, if it is, it has a very different name on the GPS list of datums). There is one problem with the Soviet military maps, they use a datum (i.e. Alas, that website ( is now part of where you have to pay for your maps.Īnyway, I digress. Fortunately for us, when I became interested in the Muzkol mountains in Tajikistan 2 years ago there was a website available where you could download entire sheets of the map in one go and save yourself the time-consuming task of stitching all the small segments together. Also the Soviet military maps are very beautiful maps, if you like that kind of thing… You can download small sections of the Soviet military maps in colour from and then stitch them together. The quality of the surveying on the Soviet military maps is as good (in my past experience) as the British Ordnance Survey maps, and the map information is presented in a similar way with major and minor contours marked, crags marked, glaciers and permanent snowfields marked etc. Many expeditions to central Asia make do with google maps, but actually there are much better maps available. not very often for me given my work situation) going running to keep fit for the expedition.īut I thought I’d blog about one of the more innovative things I’ve done this time around, improving our use of maps and GPS/GLONASS. Work can be saved into an Engauge DIG file.So much has been going on lately, there hasn’t been much time to post on here! We’ve been trying out a petrol stove to take with us, sorting out the first aid kit, trying to remember some Russian phrases (a thankless task if ever there was one), buying/borrowing replacement equipment that we need, booking off-road transport from Murgab to the roadhead… Also a friend has been translating reports for us from the internet of recent (and not-so-recent) Russian/Ukrainian expeditions to the area (thankyou Zhelyo), we have been leaving instructions and useful contact details for our helpers back in the UK, trying to cut down on the weight we carry in to basecamp…. The process is import an image file, digitized within Engauge,Īnd exported as a table of numeric data to a text file. Engauge DigitizerĮngauge Digitizer, like DataThief, works on Linux, Mac and Windows. In this case, if the output distance is too small, the matched curved will go along the edge of the marker (big error if the marker is not too small). One defect of DataThief is the extraction of a line with marker. To extract a curve, one also need define the start indicator, end indicator and color indicator.
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