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. |
See also
- Image plot options tab menu
- Axis and Frame options
- Shade Plot menu
- DBITMAP directive