Beiträge von haze

  • calibration question old 200k maps

    A friend of mine gave me the following url:
    http://lazarus.elte.hu/hun/digkonyv/topo/3felmeres.htm


    It's an index for a big collection of old east-european maps (200k).
    (3rd Military Mapping Survey of Austria-Hungary)


    These maps can be a great source for finding offroad/hiking tracks because it turns out they contain still existing tracks that are often deprecated on more recent maps...


    Would it be possible to calibrate those in ttqv?
    If so, what would be a good approach?


    Take for example:
    http://lazarus.elte.hu/hun/digkonyv/topo/200e/39-46.jpg
    In the upperleft corner: 38'30 Ostlich v. Ferro
    The index also states that "Longitude is counted from Ferro".
    What does that mean?


    Thanks in advance for any help or information...

  • problem calibrating romanian map

    Hi,


    I was pretty impressed by the possibilities of TTQV, a friend of mine demonstrated to me a few months ago.


    Now I'm toying with TTQV trial, to see if it can match my requirements on an upcoming trip... but i'm having severe trouble calibrating a specific map.


    The map is from a Romanian area, where i've been a while ago and that i would like to revisit, and of wich i have a few recorded gps-tracks. I use these tracks to check if the calibration looks is ok.


    The closest I get is by using 'FREE' calibration and define 9 points of wich I know the exact coördinates by using other mapping software. This however is very labour-intensive, takes a lot of time, and is probably not the right way to do it.


    The map has a grid-system on it, but it further does not give any specific details about the system being used. Although not sure, i suspect it to be a russian military map so i tried a second approach:
    I used Natianal Meter Grid 'Warschauer Pakt Zone 4 (datum: Pukolvo 1942).
    This gives some close result, but all my tracks seems to be shifted a few hundreds of meters, which renders the map useless for my needs. I guess, there is somekind of a Datum problem, but my knowledge in that matter is insufficient:.


    I've spend several hours to find a better, more accurate calibration, but haven't found anything yet.
    As a last resort, I'm looking for somebody to have a look on my map, and help me out with this...


    Tnx in advance!