Welcome to the Harris Geospatial product documentation center. Here you will find reference guides, help documents, and product libraries.


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

EOS_GD_WRITEATTR

EOS_GD_WRITEATTR

This function writes/updates attributes in the grid. 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 = 3.14
status = EOS_GD_WRITEATTR(gridid, "ScalarFloat", f32)

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

f32 = 3.14159
status = EOS_GD_WRITEATTR(gridid, "ScalarFloat", f32)

Syntax


Result = EOS_GD_WRITEATTR( gridID, attrname, datbuf [, COUNT=value] [, HDF_TYPE=value] )

Return Value


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

Arguments


gridID

Grid id (long) returned by EOS_GD_CREATE or EOS_GD_ATTACH.

attrname

Attribute name (string).

datbuf

Attribute values. If HDF_TYPE is specified, the IDL variable is first converted to the type specified by the keyword before being written.

Keywords


COUNT

Number of values to store in attribute (long).

HDF_TYPE

HDF data type of attribute (long).

Version History


5.2

Introduced



© 2017 Exelis Visual Information Solutions, Inc. |  Legal
My Account    |    Buy    |    Contact Us