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cdflib.getAttrgEntry - Value of entry in global attribute

Syntax

value = cdflib.getAttrgEntry(cdfId,attrNum,entryNum)

Description

value = cdflib.getAttrgEntry(cdfId,attrNum,entryNum) returns the value of a global attribute entry in a Common Data Format (CDF) file.

Input Arguments

cdfId

Identifier of a CDF file, returned by a call to cdflib.create or cdflib.open.

attrNum

Numeric value that identifies the attribute. Attribute numbers are zero-based. The attribute must have global scope.

entryNum

Numeric value that specifies the entry in the attribute. Entry numbers are zero-based.

Output Arguments

Value

Value of the entry.

Examples

Open the example CDF, and then get the value of an entry associated with a global attribute in the file:

cdfid = cdflib.open('example.cdf');

% Any of the first three attributes have global scope.
attrscope = cdflib.getAttrScope(cdfid,0)

attrscope =

GLOBAL_SCOPE

% Get information about the first entry for global attribute
[dtype numel] = cdflib.inquireAttrgEntry(cdfid,0,0)

dtype =

cdf_char


numel =

    23

% Get the value of the first entry for this global attribute.
value = cdflib.getAttrgEntry(cdfid,0,0)

value =

This is a sample entry.

% Clean up
cdflib.close(cdfid);

clear cdfid

References

This function corresponds to the CDF library C API routine CDFgetAttrgEntry. To use this function, you must be familiar with the CDF C interface. Read the CDF documentation at the CDF Web site. For copyright information, see the cdfcopyright.txt file.

See Also

cdflib.getAttrEntry | cdflib.putAttrEntry | cdflib.putAttrgEntry

Tutorials

  

 

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