SYMB (Draw a symbol)

Draw a symbol, or chain of symbols, on the map. Sub-command lines can be used to plot symbols at more locations. If no locations are specified, symbols are plotted at the locations in the current data buffer.

Command Syntax:

Command Parameters:

refp             Reference point (0 - 11) from which to refer the following offsets.                      The default is reference point 0.
xoff,yoff      Point at which to plot symbol. Default: current att position.
symb           Symbol to mark points on line:
	0	No symbol plotted
	1	dot
	2	+
	3	x
	4	box
	5	triangle
	6	Inverted triangle
	7	hexagon
	8	small box
	9	small diamond
	20	circle
	The default is the last symbol plotted.
size      Symbol size.
satt      Attribute to use for symbols.
rot       The rotation angle of the symbol in degrees counter-clockwise from              the +X axis. The default is 0.
font     The font to use to draw symbols, see the FONT command.

Sub-command Lines

x,y	Point at which to plot the next symbol.

Application Notes

1. The symbol patterns are contained in the Geosoft font files. The font file SYMBOL.GFN (and SYMBOL.BFN) font files contain filled symbols. Filled symbols will use the attribute fill colour to fill in the solid portions of a symbol.

2. Symbol numbers simply correspond to the ASCII number of the character in the font file. ASCII symbols 1 through 21 are already defined as the standard symbols listed above. You may create your own symbols by adding the coordinates of your symbol shapes to a font file. If you do create your own symbols, we recommend that you copy SMYBOL.GFN to a file of your own name, and add customized symbols above ASCII entry 21.

3. The symbol size is a factor of character size. In order to properly scale a symbol, the character size is set to 1 millimetre (MAPPLOT internally works in millimetres), and the symbol size is set to a factor of this. As a result, the SYMB command will change the current default text size. Subsequently, plotted text that relies on the default text size, may not come out as anticipated. Reset the text size after plotting symbols.

4. Attributes may be defined as needed, or they may be selected from a default set of attributes defined in an Oasis montaj attributes file (...\Geosoft\Desktop Applications \etc\mapplot.att). For more information, see the Default Attributes help topic.

Example:

This command will draw a blue filled square box symbol with a red outline, at x=2500, y=2500. The symbols will use the font named SYMBOLS.

Example:

This command will create a new map group in the Data view named 'Symbols' and plot a red filled diamond symbol with a green 100 micron thick outline, at x=17, y=50 in the new 'Symbols' Data view.

This command is part of the MAPPLOT GX.