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  1. #1
    Junior Member
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    Default Ggrs87/ΕΣΓΑ87

    GGRS87/ΕΣΓΑ87
    SetUp-Units-Map Datum- User

    D(a)= + 0.0

    D(x)= - (X-axis translation: -199.87m)

    D(y)= + (Y-axis translation: 74.79m)

    D(z)= + (Z-axis translation: 246.62m)

    D(a)= + 0.0000000

    Coordinate System
    SetUp-Units-Position Format-User UTM Grid

    Projection: TRANSVERSE MERCATOR

    Latitude Origin: 0.00000

    Longitude Origin: E 024.00.000

    Scale (factor): 0.9996

    False East: 500000.0m

    False North: 0.0m

    These are the numbers i have to replace, in order to convert my unit's position format from WGS84 to GGRS87 or EΣΓΑ87 witch is the Greek/Hellenic geodesic system. My unit (Garmin GPSmap 60CSx) doesn't support comma, so the only way to place the data in the ''DATUM'' section is the following:

    D(x) -199.87m/-19987m

    D(y) +74.79m/+74790m

    D(z) +246.62m/+24662m

    D(a) + 0.0000000/+00000m

    You can see the divergence between the correct numbers and those that the unit allows to be placed.
    I quote an example, so you can understand the divergence between the correct results (from a android app) and my unit's

    Position on GGRS87/ΕΣΓΑ87 χ:533391.540
    y:4531659.267

    Unit's podition χ:5016741
    y:4503831

    Any help will very much appreciated

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  3. #2
    GPSPower Helper

    x-trail's Avatar
    Join Date
    Jul 2010
    Location
    Europe
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    Default

    If your device does not accept numbers with decimal point, round up the number and enter it as an integer.
    If you can't delete the zeros in the boxes, use the cursor to move to the right and enter your number (000000 -> 000246).

 

 

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