If LEGEND is OFF and the legendtext parameter is entered, it is ignored. If LEGEND is ON, the legendtext parameter must be entered, and will be the legend entry for that data curve. See the LEGEND command for more information.
See the SET PCHAR command for information on how to set the plotting symbol type, size, colour, and angle; as well as how to set fill patterns, colours, and relative bar size for histograms.
Autoscaling of the axes may apply if the two parameters, x and y, are entered. See the AUTOSCALE command for information on how to set up autoscaling for the axes.
By default, if the GRAPH command is entered with neither the \AXES nor the \NOAXES qualifiers, axes will be drawn as well as the data curve or histogram. Autoscaling will apply if it is on. The data curve or histogram will be clipped at the axis boundaries. For example: GRAPH X Y ! plots axes and data GRAPH\HISTOGRAM X Y ! plots axes and histogram
If the GRAPH\AXESONLY command is entered with no parameters, autoscaling does not apply. The minima, maxima, and number of increments will be the same as the last set of axes drawn. The axes scales can be set up before entering this command, using the SCALES command. Autoscaling may apply if two parameters, x and y, are entered. For example: AUTOSCALE ON ! turns on axis autoscaling GRAPH\AXES X Y ! plots axes only autoscaled to X and Y SCALES -5 5 0 10 20 0 ! set the axis scales GRAPH\AXES ! plots the axes with predefined scales
The GRAPH\NOAXES command draws either data curves or histograms, but does not draw axes. Autoscaling will not apply. The GRAPH\NOAXES command overlays on an existing set of axes. The data curve or histogram will be clipped at the axis boundaries. For example: GRAPH\NOAXES X Y ! overlay data on the current axes GRAPH\HISTO\NOAX X Y ! overlay histogram on current axes
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By default, the graph will be stored for replotting. If the \NOREPLOT qualifier is used, the graph will not be stored for replotting. See the REPLOT command for more information.
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It is possible to draw four types of histograms using the SET HISTYP approach, or you can use the \HISTOGRAM qualifier to plot a histogram with tails to y=0 and profile along the x-axis. For example: GRAPH\HISTOGRAM X Y ! plot histogram with axes GRAPH\HIST\NOAXES X Y ! overlay histogram on current axes The \HISTOGRAM qualifier has no meaning with the \AXESONLY qualifier.
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If the \POLAR qualifier qualifier is used, x and y are assumed to represent polar coordinates where x contains the radial components and y contains the angular components, in degrees. The polar coordinates are transformed to rectangular coordinates before plotting, but the variables x and y are left unchanged.
Syntax: GRAPH { `legendtext' } x y { ye1 { xe1 { ye2 { xe2 }}}} The optional variables ye1, xe1, ye2, and xe2 are interpreted as errors for drawing error bars.
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To fill the area under a curve, use the SET LINTYP command. See also the histogram subtopic, for specifics on filled histograms. If 101 <= LINTYP <= 110, then the hatch pattern LINTYP-100 is chosen. If 211 <= LINTYP <= 299, then the dot fill pattern LINTYP-200 is chosen. The polygonal region defined by the (x,y) coordinate pairs, with the last point connected to the first, will be filled with the chosen hatch or dot pattern.
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