Help: Israeli Transverse Mercator about projnet4geoapi HOT 9 CLOSED

This WKT for your coordinate system gives deltas in 0.5 cm range:

PROJCS["Israel / Israeli TM Grid",
    GEOGCS["Israel",
        DATUM["Israel",
            SPHEROID["GRS 1980",6378137,298.257222101,
                AUTHORITY["EPSG","7019"]],
            TOWGS84[-48,55,52,0,0,0,0],
            AUTHORITY["EPSG","6141"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.01745329251994328,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4141"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",31.73439361111111],
    PARAMETER["central_meridian",35.20451694444445],
    PARAMETER["scale_factor",1.0000067],
    PARAMETER["false_easting",219529.584],
    PARAMETER["false_northing",626907.39],
    AUTHORITY["EPSG","2039"],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH]]

It gives (222285.99965981062, 631556.00379951776, NaN) which is accurate to about 0.5 cm.
One central point is missing in your constructed coordinate system and that is the TOWGS conversion information.

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Longitude_of_origin and Central_Meridian are different names for the same value.

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Thanks for the quick response.
That might be true but neglecting to add the central_meridian parameter causes an exception...
Any other input regarding the issue I'm facing? I'm really stuck... :-/

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In that case you have to provide the same value as for longitude_of_origin.

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Placing this value did not help solve the issue :-(

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Thanks!!! I'll give it a go tonight.
Is there a way to create it using code instead of this string?
Will Inverse() work? I tired it on another projection and got a not implemented exception.

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Is there a way to create it using code instead of this string?

yes, see this example.

Will Inverse() work? I tired it on another projection and got a not implemented exception.

No, it won't. Set up the opposite transformation by exchanging source and target coordinate systems.

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Is there a way to make the Inverse() work then? Should I create a small class that inherits from IMathTransform and implements the transform and inverse methods only (These are all the functions I need)?

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Question is answered and tested after #11 was implemented.

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