CDF_OPEN

The CDF_OPEN function opens an existing Common Data Format file.

Examples

id = CDF_OPEN('open_close.cdf')   ; Open a file.

; ... other CDF_ commands ...

CDF_CLOSE, id ; Close the cdf file.

Syntax

Result = CDF_OPEN(Filename [, /READONLY] )

Return Value

If successful, the CDF ID for the file is returned.

Arguments

Filename

A scalar string containing the name of the file to be created. Note that if the desired filename has a .cdf ending, you can omit the extension and specify just the first part of the filename. For example, specifying “mydata” would open the file mydata.cdf.

Keywords

READONLY

Set this keyword to open the specified CDF file in readonly mode. Opening a file in readonly mode will result in significant performance improvement if there is a large amount of metadata and a large portion of the metadata is read.

Version History

Pre 4.0	Introduced
7.0.3	READONLY keyword added