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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