Displaying a time series

To start FROG you should just need to type the command:

 % frog &

This assumes that you have FROG installed on your system as part of a standard Starlink installation. If not then you'll need follow any installation and pre-startup instructions that you have before using this command.

When FROG appears it should look something like:

This is the main browser window. This window acts as a container for your time series analysis task (in what has traditionally been referened to as a `stack'

To open your first time series select the Open Time Series item in the File menu. This will create an open file dialog window. Just navigate to your spectrum, select it, and press Open to proceed.

Alternatively you could have supplied the time series you want to use on the command-line:

 % frog <time series> &

Which will read the time series stored in the named file.

If all goes well, your time series will be displayed in a plot window.

The window is labelled Time Series 1. Each time series you read will have a unique identifier (equivalent to a `slot' in command line applications like PERIOD ). In this example we have read in a file consisting of x, y and y-error. The data points are shown in blue, with the error bars in red.