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Map Scale

This is a discussion on Map Scale within the MapPoint Desktop Discussion forums, part of the Map Forums category; Hi Does any one know the calulation for working out the scale of the map ie 1:20000 I can find ...

  1. #1
    colin_turner99 is offline Junior Member White Belt
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    Map Scale

    Hi

    Does any one know the calulation for working out the scale of the map

    ie 1:20000

    I can find anywhere on the net that tells me the caluation

    Thanks

    Colin

  2. #2
    Eric Frost's Avatar
    Eric Frost is offline Administrator Black Belt
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    How do you want the scale expressed?

    I think 1:20,000 is equivalent to 1cm = 20,000cm or 200m (0.2km) does that make sense?

    You could do the same thing with inches like 1in = 20,000in

    20,000in is 1666.7 feet which is

    1667 / 5280 feet in a mile = 0.316 miles

    Is my logic correct? Perhaps someone else who was a Geography major but has more brain cells left can pipe in

    Eric
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  3. #3
    Wilfried is offline Senior Member Black Belt
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    Hi Eric,

    Your brain is correct. When I ping my brain cells they reply with the same result in their ICMP packet

    Hi Colin,

    Is what you wants to do calculate the scale of the current displayed map ?

  4. #4
    colin_turner99 is offline Junior Member White Belt
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    Yes i want to calucate to to the OS maps scales

    IE you can buy a map in 1:20000 scale

    I need to display this in the tool bar at the bottom of my app

    Colin

  5. #5
    colin_turner99 is offline Junior Member White Belt
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    Hi

    I have finally got back to this now the problem i have is what is the altitude property messured in ie Feet, Meters

    I need to know this so i can work out the calulation for the Scale

    Colin

  6. #6
    Wilfried is offline Senior Member Black Belt
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    Hi,

    Altitude is in miles or in kilometers, depending on the value of the property 'Units' (geoKm or geoMiles).

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