The Options dialog box is used to set various defaults and options for Plotter.
These settings are saved using the Choices system - this is a standard used by
all ROX applications, and you can read more about it here.
Display and Colour Options
Like many GTK+ programs, Plotter has a status bar at the bottom of the main
window. Normally this shows the x and y co-ordinates of the current mouse
cursor position. When you pan the graph by clicking and dragging with the pan
button (by default the left button), the status bar changes to show how much
the graph is being panned by. When you zoom to a region, the status bar shows
the region that you are zooming to. You can turn the status bar on and off
Show status bar option. Similarily, the
bar controls whether the toolbar at the top of the Plotter window is
Plotter has an optional grid which is shown as dashed lines on the graph. The
Show Grid lines option is used to turn on and off the grid.
Label Font option specifies the font used for the labels on
both the x and y axis. Changes made to this font will not take effect on plot
windows that are currently open. Options are also provided to change the line
width used to draw the axes, and the size of border left around the edge of the
Colours tab in the options dialog box allows you to choose
which colours should be used for the grid lines, the zoom-box and for graphing
X Axis and
Y Axis tabs in the options dialog box
allow you to set the plot range and display options for the x and y
The plot range for each axis is specified in terms of the minimum
(i.e. starting value for the axis), maximum (i.e. ending value) and
pitch (the distance between succesive grid ticks or labels on the axis).
You should type a decimal number into each box.
There are three display options for each axis:
- Show Axis - controls whether to draw the axis or not.
- Show tick marks - controls whether tick marks are
drawn at intervals along the axis.
- Show Labels - controls whether text labels are drawn at
intervals along the axis.
Parametric and Polar Options
Parametric and Polar graphs use the variable
Parametric/Polar tab lets you change the maximum and minimum
t used for these graphs, as well as the number of points
to be plotted on each graph. Increasing the number of points increases the
resolution of the graph produced.
Mouse and Key Bindings
Mouse Bindings tab lets you choose which mouse button you want
to use for each of three functions:
As with most GTK+ programs, you can set shortcut keys for menu items by
pressing the desired key combination with the mouse over the menu item you
want. These key bindings will be saved with your Plotter options, but this has
not been implemented yet!
- Panning the graph (default is left button)
- Zooming to a region (default is middle button)
- Popping up the menu (default is right button)
Plotter 0.2.1 Documentation
James Kermode, August 2001