creating custom co-ordinate system.

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    tomasb
    those strings in xml def file are proj.4 library coordinate systems strings. and towgs= define helmert transformation parameters. there should be som authority that provides these numbers. btw you should verify if your XY Coordinates are not swapped
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    Geoinfodoo

    tomasb

    Hi. I know its been long time of this post but I face same problem - how to create my own coordinate system. What do you mean it should be some authority that provide this numbers?

    Is there any reference how to create custom coord system?

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    Ondrej Trhan CR

    Hi Geoinfodoo, regarding to authority, it should be some Geodesy, Cartography and Cadastre Authority for your country.

    Do you want to change some of the used coordinate systems or you have your own coordinates? Is it possible to use it as local?

    For example I add into local.XML one local coordinate system using feet:

    <CoordinateSystems authority="Local">
        <cs id="1" desc="Euclidean" params="+proj=geocent +ellps=WGS84 +no_defs" />
        <cs id="2" desc="Laboratory" params="+proj=geocent +ellps=WGS84 +units=mm +no_defs" />
        <cs id="3" desc="Feet" params="+proj=geocent +ellps=WGS84 +units=us-ft +no_defs" />
    </CoordinateSystems>

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