You can reformat the traces on your polar plot, using the Traces page of the dialog box for formatting polar plots.
To reformat a plot’s traces:
• Click in the polar plot to select it.
• Double-click in the polar plot. Alternatively, choose GrapheePolar Plot from the Format menu. Mathcad displays the dialog box for formatting polar plots.
• If necessary, click the Traces tab.
• Click on the appropriate line in the scrolling list box to select a trace. To change the name of the trace, type the new name in the text box under the “Legend Label” column. To assign a symbol or marker, line type, color, trace type, and line weight to this trace, click on the arrow beside each text box to see a drop-down list of options, and then click on the option you want. See the next section, “Trace settings,” for complete explanations of these fields.
• Click “OK” to accept your changes and close the dialog box. Mathcad redraws the plot with the new settings in effect. Alternatively, click “Apply” to preview your changes without closing the dialog box.
A graph can have up to sixteen individual traces. Each trace is described by a line in the scrolling list. Mathcad uses these lines as needed, assigning one for each trace in your plot. Each line has six fields:
This is the name of the trace as it would appear in the legend beneath the plot. See the section “Displaying or hiding arguments and legends” on page 507 for more information about legends.
This controls whether each point on the curve is marked with a symbol. If y you choose, you can mark each point with either an “x,” a “+,” a hollow box, or a hollow diamond. If you have a lot of points packed closely together, you should probably select “none.” Figure 21-12 on page 514 shows an example in which each data point is marked by with an “x.”
This controls whether the line is solid, dotted, or dashed or whether it consists of alternating dashes and dots. This feature provides a useful way to distinguish unmarked curves in black and white printouts.
This controls whether the selected trace is red, blue, green, magenta, cyan (a light blue), brown, black, or white. Mathcad ignores this on monochrome displays.
This controls the type of trace that will be displayed. Mathcad can generate the following types of plots: curves, bar graphs, ‘stepped curves, error bars, stem graphs, and points. (You must have at least two traces to use error bars.) illustrates the same polar plot, displayed with a variety of trace types.
This controls the weight or thickness of the trace. Select from 1 to 9 (thinnest to thickest). Select “p” for the lightest (single-pixel) trace. Although this may look like weight I on your screen, a high resolution printer will print it as a very fine line. This field also controls the size of the symbols marking data points, if you have selected a symbol other than “none”. If you have selected trace type points, this field sets the weight of the dot plotted at each data point.
See “Setting default formats” below to learn how to:
• Quickly restore a polar plot to its default format settings.
• Use a particular plot as a model for all future polar plots.
In addition to the scrolling list and its associated text box and lists, the Trace page has two check boxes: Hide Arguments and Hide Legend. These are explained fully in the “Displaying or hiding arguments and legends”