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I am trying to calculate the length of lines, which were convatede before from gps to Shapefile (vector layer). I tried it with "feldrechner" (matrix calculator?) and the most time I got 0, or in the other times I got a very unrealistic result.
I also tried it with measurement of lines. There I got a good result. But I think, because of tracing the line by hand it is not so exact.
Does anybody know how I can get my exact length or/and area?
Both my results were: e.g. this result (first way): 2.74556577576214e-07 In my other way I got in this case 35,555m.