Image Plot

Select menu: Graphics | Image Plot

Use this to specify data for an image plot. The data are plotted as a 2-dimensional bit map of RGB colours. These use a standard way of representing a colour as a single number whose bits are partitioned into three ranges to record the three component colours of red, blue and green.

After you have imported your data, from the menu select
Graphics | Image Plot.
Fill in the fields as required then click Run.

You can set additional options and axis settings by clicking the Options, X axis, Y axis and Frame tabs.

Data arrangement

The data can be supplied in two different formats. A Matrix of the RGB values or a Single variate with coordinates where the variate contains the RGB values and the coordinates contain the pixel locations.

Available data

This lists data structures appropriate to the current input field. It lists either matrices or variates for specifying the data. The contents will change as you move from one field to the next. Double-click a name to copy it to the current input field or type the name.

Data supplied as a matrix

Data matrix

Specifies a matrix containing the RGB values that are to be displayed. Double-click the name of the identifier for the data within the Available data list to copy it across or type the name.

Create grid matrix

This opens a menu where you can create a matrix of RGB values.

Data supplied as a matrix

Data variate

Specifies a variate containing the RGB values that are to be displayed. You must supply the row and column coordinates associated with each value. Double-click the name of the identifier for the data within the Available data list to copy it across or type the name.

Row coordinates

Specifies the row coordinates for the position of the RGB values. Double-click the name of the identifier for the data within the Available data list to copy it across or type the name.

Column coordinates

Specifies the column coordinates for the position of the RGB values. Double-click the name of the identifier for the data within the Available data list to copy it across or type the name.

Action buttons

Run	Produce the graph.
Cancel	Close the dialog without further changes.
Defaults	Reset options to their default settings.

Action Icons

	Pin	Controls whether to keep the dialog open when you click Run. When the pin is down the dialog will remain open, otherwise when the pin is up the dialog will close.
	Restore	Restore names into edit fields and default settings.
	Clear	Clear all fields and list boxes.
	Help	Open the Help topic for this dialog.