Control Panel

Polar Graph Tab

[Polar Graph Tab Image]

Tkgraph Control Panel -- Polar Graph Tab:
Select None button
Clear the current graph selection. Only graphs which are selected may be modified on this tab. Selected graphs appear with a grey background.
Select One button
Prepare the page for modifying one graph. After pressing this button, the user must left-click on a graph on the page to select it.
Select Some button
Prepare the page for modifying multiple graphs. After pressing this button, the user must select one or more graphs for modifying. Selection is done by either:

Left-clicking on a graph to set it as the only selected graph

Control-left-clicking on a graph to toggle it's selection state.
Select All button
Select every polar graph on the page.
Delete button
Pressing this button will cause the selected graph to be deleted.
Raise button
Sometimes items on the page will be obscured by other page items. This button will raise the selected graphs above every other item on the page so they are not obscured.
Lower button
Sometimes items on the page obscure other page items. This button will lower the selected graphs above every other item on the page so they do not obscure any other page items.
Update Values
Pressing this button will fill in every entry area below with the values from the currently selected graph. If more than one graph is selected, the values from only one graph are used.

The following is a description of the graph properties that can be modified in this tab. Each property is shown as a checkbutton, a label, and an entry area.

THE CHECKBUTTON MUST BE SELECTED IN ORDER FOR THE PROPERTY TO BE CHANGED.

The value in the entry area will be used as the new value for that property.
Graph Titles
Title
The title for the graph.
Title font
The font to use for the graph title. Pressing the button will open up the font selector dialog to allow the user to select a font name.
Subtitle
The subtitle for the graph.
Subtitle font
The font to use for the graph subtitle. Pressing the button will open up the font selector dialog to allow the user to select a font name.


Graph Coordinates
Graph Coordinates
X0 Position
Setting this will move the center of the graph to the specified X value.
Y0 Position
Setting this will move the center of the graph to the specified X value.
Y0 Position
Setting this will set the radius of the graph to be the specified value, in pixels.


Miscellaneous Properties
Pole Direction
Direction of the polar origin measured counterclockwise from 3:00.
Draw the Axis Cross
Specifies whether the axis cross (which also shows the pole direction) should be drawn. This option is not really needed because you can turn the axis cross off by setting it's length to zero. It will be removed at a later time.
Draw the Axis Arrow
Specifies if an arrow should be drawn at zero degrees.
Length of Axis
The radial size of the center cross. Set to zero to turn off the cross.
Sense
The direction of increasing angle. Positive values indicate a clockwise direction.
Radial limit
The radial value of the outer edge of the phase graph. This is measured in graph units.

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