Projection datums – Pitney Bowes MapXtreme User Manual

Page 569

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Appendix H: Elements of a Coordinate System

Projection Datums

MapXtreme v7.1

576

Developer Guide

Alternatively, if you want to bound the system to (x1, y1, x2, y2)=(-500000, 0, 500000, 1000000), the
required line is:

<ProjectedCRS>

<srsName>UTM Zone 1 (NAD 83)- bounded</srsName>
<srsID>

<code>coordsys 8,33,7,-177,0,0.9996,500000,0, -500000, 0,

500000, 1000000

</code>
<codeSpace>mapinfo</codeSpace>
<remarks>Universal Transverse Mercator </remarks>

</srsID>
<baseCRS/>
<definedByConversion/>
<usesCartesianCS/>

</ProjectedCRS>

To customize the system using both of these modifications, the line is:

<ProjectedCRS>

<srsName>UTM Zone 1 (NAD 83)</srsName>
<srsID>

<code>coordsys 8,33,7,-177,0,0.9996,500000,0, 7, 0.5, -

0.866, 0, 0.866, 0.5, 0, -500000, 0, 500000,
1000000 </code>

<codeSpace>mapinfo</codeSpace>
<remarks>Universal Transverse Mercator </remarks>

</srsID>
<baseCRS/>
<definedByConversion/>
<usesCartesianCS/>

</ProjectedCRS>

Projection Datums

The datum is established by tying a reference ellipsoid to a particular point on the earth. The
following table lists these details for each datum:

The number used to identify the datum in the MapInfoCoordinateSystemSet.xml file.

The datum’s name

The maps for which the datum is typically used

The datum’s reference ellipsoid

Number

Datum

Area Maps

Ellipsoid

1

Adindan

Ethiopia, Mali, Senegal,
Sudan

Clarke 1880

2

Afgooye

Somalia

Krassovsky

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