Axes can be represented by a linear scale, a logarithmic scale, a dB10 scale, or a dB20 scale.  Each axis can be represented by a different scale.  Use the radio buttons to select the appropriate scale for each axis.  For bar charts, the category (horizontal) axis cannot be represented in this way. Refer to the following table to view the scale types available for complex plots:

For the r axis, the circular axis lines are spaced to match the chosen setting.  For the theta axis, linear scale is the only option.

For the r axis, when you change the Min and Max, HyperGraph 2D updates the circular grid line values to match the new max and min.  The minimum value may be negative for radar plots.

For the theta axis, HyperGraph 2D evenly distributes the range of values around the circle, theta = 0 to theta = 360.  HyperGraph 2D does not display the maximum value because it would overlap the minimum value.  For radar curves, HyperGraph 2D connects the last value to the first value.

When a curve is constructed, the axes’ minimum and maximum values are set so that the curve fits in the window by default.  When you select a different axis scale type, the minimum and maximum values automatically change.  New minimum and maximum values can be specified in the Min and Max text boxes.  Altering the minimum and maximum values for an axis scales the plot along that axis.

Click Fit All, , from the 2D View Controls toolbar to return Min and Max to the default values and scale the curve to fill the window.  Press return or click Apply to accept the changes. Activating the Fit range check box restores the current axes values when Fit is selected from the view controls.

If you select the dB10 axis scale type, the program scales any curve data using the formula Data = 10.0 * log10(Original_Data).  If no curves exist on the graph, the minimum value will default to -30 and the maximum to 10.  If you select the dB20 axis scale type, the program scales any curve data using the formula Data = 20.0 * log10(Original_Data). If no curves exist on the graph, the minimum value will default to -60 and the maximum to 20.

When Auto Fit is turned on, the selected axis is automatically scaled to fit new curves or bar charts that are added to the axis.  If Auto Fit is turned off, the selected axis remains scaled to fit the curve(s) currently assigned to it and it is not scaled to fit new curves.  For bar chart, if Auto Fit is turned off, the axis is not scaled to fit new bar charts. When the category axis is selected from the Axis list and Auto Fit is turned off, you can select the categories that you want to display in the HyperGraph 2D window.  Enter a starting category in the From field and an ending category in the To field then click Apply.  Those categories are displayed in the HyperGraph 2D window.

Horizontal labeling rotates the category text to horizontal when the X and Y-axes are flipped (X becomes the vertical axes).  To flip the X and Y axes, click the Flip XY icon, , on the 2D View Controls toolbar.

Bar chart labels can be slanted diagonally to prevent long names from overlapping.

How do I...

Click the font button, , from the Scales and Tics tab to change font attributes for axis labels.

See Also:

Axes Panel