ActiveOutFile -- An object that actively updates its file stream when updated.
This is the file I/O equivalent of ActiveGraph: it takes an OutFile object, a target (datafeed) object, and a selector, which it uses to extract data from the object and send it to the file.
- setDataFeed: d
The setDataFeed: method sets the object that will be probed for data.
Sets an extensible HDF5 dataset that data will be appended.
- setFileObject: aFileObj
The setFileObject: method sets the file object to which the data will be sent.
Returns the last probed value
The step method fires the probe, reads the value from the object, and sends the value to the file.