cdflib.inquireAttr

Information about attribute

Syntax

info = cdflib.inquireAttr(cdfId,attrNum)

info = cdflib.inquireAttr(cdfId,attrNum) returns information about an attribute in a Common Data Format (CDF) file.

`cdfId`	Identifier of a CDF file, returned by a call to `cdflib.create` or `cdflib.open`.
`attrNum`	Numeric value that identifies the attribute in the file. Attribute numbers are zero-based.

info

Structure containing the following fields.

Field	Description
`name`	Attribute's name
`scope`	Either `'GLOBAL_SCOPE'` or `'VARIABLE_SCOPE'`
`maxgEntry`	The maximum entry number used for global attributes.
`maxEntry`	The maximum entry number used for attributes with variable scope.

Open the example CDF, and then get information about the first attribute in the file.

cdfId = cdflib.open("example.cdf");

% Get information about an attribute
info = cdflib.inquireAttr(cdfId,0)

info = 

  struct with fields:

         name: 'SampleAttribute'
        scope: 'GLOBAL_SCOPE'
    maxgEntry: 4
     maxEntry: -1

% Clean up
cdflib.close(cdfId)
clear cdfId

This function corresponds to the CDF library C API routine CDFinquireAttr.
To use this function, you must be familiar with the CDF C interface. You can access the CDF documentation at the CDF website.