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How GraphTool works.

Input file format

The input format for GraphTool is a simple two column comma delimited file.
As GraphTool was primarily written to graph the frequency response of audio devices, I was only interested in graphing two data columns,
those being frequency and amplitude.

However, I came to realise that it might be useful for other purposes, so I added the options to create a linear graph and allow the end user
to define their own axis names.
The input file must not contain any blank lines, however comment lines beginning with '#' or "*" are acceptable.

Note: When using the "convert to dB" function, if there are any zero or negative values in the second column, these values will be converted to an abitrary number (0.1 in this case)
and a warning message will be displayed when the graph is drawn.

Example data: