Use this function to open an existing EVF. It returns the EVF ID, which is used to access data from the file using ENVI_EVF_INFO and ENVI_EVF_READ_RECORD.

Syntax


Result = ENVI_EVF_OPEN(Filename)

Arguments


Filename

This is a string value that specifies the EVF filename.

Example


See the code example under ENVI_EVF_CLOSE.

API Version


3.8