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Harris Geospatial / Docs Center / IDL Reference / I/O - EOS / EOS_PT_WRITEATTR

EOS_PT_WRITEATTR

EOS_PT_WRITEATTR

This function writes/updates an attribute in a point. If the attribute does not exist, it is created. If it does exist, then the value(s) is (are) updated.

Examples


In this example, we write a single precision (32 bit) floating point number with the name “ScalarFloat” and the value 3.14:

f32 = 3.14f
status = EOS_PT_WRITEATTR(pointid, "ScalarFloat", f32)

We can update this value by simply calling the function again with the new value:

f32 = 3.14159
status = EOS_PT_WRITEATTR(pointid, "ScalarFloat", f32)

Syntax


Result = EOS_PT_WRITEATTR( pointID, attrname, datbuf [, COUNT=value] [, HDF_TYPE=value] )

Return Value


Returns SUCCEED (0) if successful and FAIL (–1) otherwise.

Arguments


pointID

Point id (long) returned by EOS_PT_CREATE or EOS_PT_ATTACH.

attrname

Attribute name (string).

datbuf

Attribute values.

Keywords


COUNT

Number of values (long) to store in attribute.

HDF_TYPE

Number type (long) of attribute..

Version History


5.2

Introduced

 



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