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

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Result = ENVI_EVF_OPEN(Filename)

Arguments

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Filename

This is a string value that specifies the EVF filename.

Example

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See the code example under ENVI_EVF_CLOSE.

API Version

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4.2