PGDISP or FIGDISP server for X Window workstations

The figdisp server is part of Figaro: it maintains a ``line graphics'' window which can be addressed by PGPLOT using the /XDISP device type. The pgdisp server is a subset of figdisp that shows only the line graphics window. Both server programs run in the background and keep the PGPLOT window open. (Most users will prefer to use /XSERV instead of /XDISP).
Author
Sam Southard, Jr., 1991.
Device type code
/XDISP.

Starting PGDISP

To start up the pgdisp server (in the background), use 
% pgdisp [options] &
You can change the size of the server window with the mouse. You can also use standard -geometry and -display options with pgdisp. PGPLOT will adapt to the size selected, but it is not possible to change the size of a graph after it has been displayed. To remove the server, select Quit from its menu. If the pgdisp program is not in a directory in your path, you will need to use the full file name (or create an alias), e.g., 
% /usr/local/pgplot/pgdisp [options] &

Redirecting the Display

Before starting pgdisp, both the Figaro and the X11 environment must be set up. The X11 environment consists of setting the DISPLAY environment variable appropriately. For example: 
% setenv DISPLAY :0
or 
% setenv DISPLAY lo-fan:0.0
The first example would cause the display to appear on the local machine. Other values which can be used to accomplish this are "unix:0.0" and "lhost:0.0", where lhost is the name of the local host.

Multiple Copies

If you wish to start up a second copy of pgdisp, type the line 
% pgdisp -id # [options] &
where # represents any integer. Note that there cannot be a copy of figdisp and a copy of pgdisp running on the same screen with the same id. To send graphics to a particular pgdisp window, specify the id number before /XDISP, e.g., "1/XDISP". The default is 0.

Options

The PGDISP window uses a default of 16 colors (2 if on a monochrome screen or it can't get 16 colors for some reason), but this can be changed with the lineColors resource. You need more than 16 colors for PGPLOT gray-scales; I recommend 64. More than 64 colors is likely to steal too many from other windows.

The window can be resized arbitrarily. The initial size is determined by the figdisp.lg.geometry resource. Since PGPLOT automatically scales to use the entire window, the line graphics window should not be resized while a program is accessing it. If this is done, the display server will not crash, but the output will look odd, and cursor positioning may be incorrect.

The window title is updated to show the position of the cursor when the cursor is in the line graphics window.

Command Line Option	X resource	Default	Notes

-display disp		.display	none	The display on which the
						display server should run.

-id #			.id		0	The id number of this copy of
						figdisp or pgdisp.  An
						arbitrary number of copies of
						figdisp/pgdisp may be run at
						the same time, as long as each
						one's id number is unique.

-geometry WxH[+x+y]			512x512	This flag corresponds to
						.bm.geometry in figdisp and
						.lg.geometry in pgdisp

-lgGeometry WxH[+x+y]	.lg.geometry	512x512	The line graphics window
						geometry.


-lineColors #		.lineColors	16	The number of colors to use for
						line graphics.

-visual			.visual		Any	The visual to use.  Accepted
						values include the X11 visuals
						PseudoColor and GrayScale, as
						well as Default (only the
						default visual is allowed) and
						Any (any visual is allowed) for
						either pgdisp or figdisp.
						Pgdisp also allows the X11
						visual classes StaticGray,
						StaticColor, DirectColor, and
						TrueColor.

-lgCrosshair            .lg.Crosshair           Specify to get
                                                cross-hair cursor.