EOS_GD_WRITEATTR
Syntax | Return Value | Arguments | Keywords | Examples | Version History
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.
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). See IDL and HDF Data Types for valid values.
Examples
In this example. we write a single precision (32 bit) floating point number with the name "ScalarFloat" and the value 3.14:
We can update this value by simply calling the function again with the new value:
Version History
