cdflib.getAttrEntry

Value of entry in attribute with variable scope

Syntax

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

Description

value = cdflib.getAttrEntry(cdfId,attrNum,entryNum) returns the value of an 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 variable 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 get the value of an entry associated with an attribute with variable scope in the file.

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

% The fourth attribute is of variable scope.
attrscope = cdflib.getAttrScope(cdfid,3)

attrscope =

VARIABLE_SCOPE

% Get information about the first entry for this attribute
[dtype numel] = cdflib.inquireAttrEntry(cdfid,3,0)

dtype =

cdf_char


numel =

    10

% Get the value of the entry for this attribute.
% Note that it's a character string, 10 characters in length
value = cdflib.getAttrEntry(cdfid,3,0)

value =

Time value

% Clean up
cdflib.close(cdfid);

clear cdfid

References

This function corresponds to the CDF library C API routine CDFgetAttrzEntry.

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.

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