Trellis Plot – Options

Use this to set attributes to control the appearance of a trellis plot.

Graph title

Lets you enter a title for the graph. The title appears centred at the top of the graph.

Title font

This opens the Edit Font menu that lets you control the font for the title.

Panel layout

Specifies the number of rows and columns of plots to appear within one window. You either select a number from the available list or enter the numbers directly.

Position of first picture

Controls how the plots are to be drawn in a window. Select Bottom left to start drawing the plots from the bottom left of the window or select Top left if you want the plots to start from the top left of the window.

Frame shape

These options control the size of the frame for the trellis plot.

Square	The frame is square.
Portrait	The frame fills a portrait oriented page.
Landscape	The frame fills a landscape oriented page.

Y-variate pens

This option controls the pens used in a trellis plot with multiple series using groups within frames. The pens control the symbols and colours used for the groups of each series.

Different	Each series uses different pens for each group, e.g. for two series with three groups the pens will be 1,2,3, 4,5,6.
Same	The same pen for a group will be used by all the series, Note the groups will be still plotted with different pens, e.g. for two series with three groups the pens will be 1,2,3, 1,2,3.

Display key when more than one group

Controls whether to display a key when each window of the trellis plot contains more than one group, for example, when there are several y-variates or a factor has been supplied for the groups within frames.

Number of groups in histogram

For a trellis diagram of histograms you can specify the number of groups by entering a value in the space provided. If this is left blank then Genstat will automatically generate the number of groups.

Titles for individual plots

This option controls the titles for the individual plots with a trellis plot.

Factor names with labels	The names and the labels of the factors will be used. For example with Gender and Voted (No, Yes) the labels would be ‘Gender Female, Voted No’, ‘Gender Female, Voted Yes’, etc.
Just factor labels	Just the labels of the factors will be used. In the above example, the labels would be ‘Female, No’, ‘Female, Yes’, ‘Male, No’ and ‘Male, Yes’.

Omit empty plots

This option controls if plots containing no data points are plotted.

No	All the empty plots will be included in the trellis plot.
Yes	All the empty plots will be excluded from the trellis plot.
Only empty levels of groups factors	Only plots associated with a factor group which has no observations will excluded from the trellis plot. This is only different from Yes if there are multiple factors in Groups for frames. For example, if the combination of factors A and B had no observations in group A=1 B=1 but some observations in A=1, B=2 and A=2, B=1, then this group would still be plotted when this item was selected, as groups A=1 and B=1 both have observations elsewhere in the trellis plot.

Relative sizes for axis titles and labels

These options control the sizes and space allowed for the plot and axis titles.

Y-axis label margin	controls the space on the left of the plots for the Y-axis label.
X-axis label margin	controls the space below the plots for the X-axis label.
Plot title margin	controls the space above the plots for the individual plot labels.
Pen size for titles and labels	controls the size of the font used for the titles and axis labels.

Edit all fonts as a list

Clicking this opens the Edit All Fonts as a List dialog which allows all the fonts in the graph to be set in one place.

Action buttons

Run	Produce the graph.
Cancel	Close the dialog without further changes.
Defaults	Reset the 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.