Graphical Operation Codes

The Graphical Operation Code (GOC) determines how the coordinates are interpreted and what is done at the point determined by the coordinates. For an individual data point, its GOC codes must be given. For each data BLOCK, you define a default GOC that is used for the whole BLOCK, unless a GOC is explicitly defined for a specific point.

• If S is omitted, no symbol is plotted. A number selecting the symbol can optionally follow the character S. The DIGLIB software determines which symbol the number represents. See Plotting a Symbol.
• If any of the other characters are omitted, the default defined for the BLOCK is used. Absolute values imply the current coordinates; relative values mean that these are added to the current coordinates. The GOC must be written without any space between various characters, but the order for the characters is irrelevant.
• If no GOC is defined for a BLOCK, the system default is MWA, (Move Word Absolute), i.e., move to the given point that is interpreted as absolute word coordinates. GOC=DNA means draw a line from the current point to the new one interpreting the coordinates as normalized. After each draw or move operation, the so-called current point is the new point.
• The TEXT following the ’ command is interpreted and expanded by the DIGLIB software, if it includes any ^ operator or STRING names using the ~ descriptor. To get PostScript outputs, the TEXT must be edited by the LaTeX Text Formatting Program instead (see LaTeX Formatting Codes).