Axis Properties

The Axis page for a selected standard axis provides a way to change the scale, set the length and starting position, set the axis limits, and create a title on a standard axis. The selected axis properties appear in the Property Manager. The Axis page for a box plot axis and stiff plot axis includes a limited set of the standard axis properties. The ternary plot axis is based on a standard axis, but uses different Limits properties.

Edit the axis properties on the Axis tab in the Property Manager.

Scale

The axis scale can be Linear, Log (base 10), Probability, Probability (% labels), or Ln (natural log).

Linear axes default to a range that covers all of the data. Tick marks are spaced so that the tick mark labels do not overlap.
The data column used for a Log (base 10) axis should not contain values equal to or less than zero. If such values are present, the plot only displays values greater than zero. A warning message is displayed after selecting Log (base 10) if your data contains values less than 0.
Probability axis data must be percentages, though the axes can have percent (Probability (% labels)) or proportion labels (Probability). The data must be between 1E-5 (0.001%) and 0.99999 (99.9999%). All data values outside this range are excluded from the plot. The probability axis is a normal probability axis.
The Ln (natural log) option is similar to the Log (base 10) option, except a natural log is used.


The Y Axis Scale is set toLinear.	The Y Axis Scale is set to Ln (natural log).	The Y Axis Scale is set to Log (base 10).


The Y Axis Scale is set to Probability.	The Y Axis Scale is set to Probability (% labels).

When Link axis scale option on the Link Axis tab is checked for a dependent axis, the Scale option on the Axis tab displays Linked in the Property Manager. To change the Scale for the dependent axis, select the controlling axis and change the Scale.

Length

You can change the axis length by typing a new number into the Length box. The Length is in page units. The default length is 6.000 inches (15.24 cm) for 2D plots and 5.000 inches (12.7 cm) for 3D plots. Axes must be between 0.010 and 200 inches (0.0254 and 508 centimeters).

When Link length is checked for a dependent axis on the Link Axis tab, the Length option in the Axis Properties section on the Axis tab displays Linked in the Property Manager. To change the Length for the dependent axis, select the controlling axis and change the Length.

X Position

The X position option sets the horizontal position of the selected axis. The X position is in page units.

When Link X position is checked for a dependent axis on the Link Axis tab, the X position option in the Axis Properties section on the Axis tab displays Linked in the Property Manager. To change the X position for the dependent axis, select the controlling axis and change the X position.

Y Position

The Y position option sets the vertical position of the selected axis. The Y position is in page units.

When Link Y position is checked for a dependent axis on the Link Axis tab, the Y position option in the Axis Properties section on the Axis tab displays Linked in the Property Manager. To change the Y position for the dependent axis, select the controlling axis and change the Y position.

Position

Click the Set button next to the Position option to open the Position Axis dialog. The Position Axis dialog moves an axis relative to another axes.

Radius Axis Angle

For polar radius axes, the Axis angle option is used to set the angle at which the radius axis is to be drawn. Angles are in degrees. 90 degrees points to the right, 0 degrees points up. The Axis angle must be between 0 and 360 degrees.

Axis Limits

The Limits section controls the axis range. Click the next to Limits to see the following options. You can make the axis range smaller or larger by changing these settings. If you make the axis range smaller, the plot can be drawn past the axes. Clipping can be used to limit the range of the plot.

The axis minimum and maximum are displayed in the Minimum and Maximum fields. If Auto appears in the Minimum and Maximum fields, the axis range is automatically generated based on the data minimum and maximum. To limit the range of the axis, you can click the word Auto next to Minimum or Maximum and select Custom. You can then enter a new value into either the Minimum or Maximum box.

Click the word Custom and select Auto to go back to automatic axis limits. The word Auto will appear and the Minimum or Maximum will revert to the default value.

Logarithmic and probability axes cannot include values less than or equal to zero. The axis Minimum will revert back to the previous value if a value less than or equal to zero is typed in the Minimum field.

Axis Limits - Date/Time

If you have enabled date/time formatting by selecting the Use date/time format option on the Labels page, the axis limits can be set with dates and time. Click the next to Axis limits to see the following options.

To set the limits based on dates and time, click the current date next to the Minimum date/time or Maximum date/time fields. In the Select Date/Time dialog, select the appropriate date and time. Click OK to make the change appear on the axis. Date values can also be typed directly in the box. When inputting date/time values directly in the Property Manager, date/times must always be entered as MM/dd/yyyy hh:mm:ss. No other formats are permitted in the date/time edit boxes in the Property Manager.

If an axis currently displays date and time formats, you can turn off date/time formats on the Labels tab by clearing the Use date/time format option.

Axis Limits and Plotted Data

If the axis limits are set completely outside the data range, the plot will be drawn outside the axes. For example, if the data range is 100 to 500, but the Minimum value is changed to 10,000 and the Maximum value is changed to 50,000 then it appears as if no plot is displayed and only axes are displayed. The plot is actually drawn well outside of the axes, whether it can be seen in the program window or not. Click the Fit to Window command to see the plot and the axes. If the data are plotted far beyond the axes, use the axis properties in the Property Manager to reset the axis limits or delete the plot in the Object Manager.

If the axis limits are completely inside the data range, the plot will extend beyond the axes by default. If you wish to plot only data that fall within the axis limits, select the plot and set the Clipping properties to Axis on the Data Limits page.

Linked Axis Limits

When Link limits is checked for a dependent axis, the Minimum and Maximum options in the Limits section on the Axis tab displays Linked in the Property Manager. To change the Minimum or Maximum for the dependent axis, select the controlling axis and change the Minimum or Maximum.

Ternary Axis Limits

The Limits properties section is different when the axis is part of a ternary or piper diagram

The 0 to 100 scale check box changes the axis range from 0 - 1 to 0 - 100. Enabling this option for one axis automatically changes it for all three ternary diagram axes, all six Durov plot axes, or all ten piper diagram axes
The Reverse direction option is available for ternary plots. Select Reverse direction to rotate the ternary axes.
Ternary plots have two modes for setting the axis limits. Click Select in the Limits field to set the axis limits by clicking and dragging in the plot. Click Enter limits in the Advanced field to type the desired axis limits in the Axis Limits dialog.

See the Ternary Axis Tips topic for more information about ternary axes.

Stiff Plot Axis Limits

The Limits properties section behaves differently for a stiff plot. The axis Minimum is the negative value of the left side maximum, and the axis Maximum is the right side maximum. For example, a stiff plot axis Minimum of -80 sets the left side maximum to 80. The Minimum value must be less than 0.

Descending

The Descending option flips the axis so that it increases in the reverse direction. Check the box next to the Descending option to reverse the axis. If Descending is checked, the X Axis values decrease to the right, or the Y Axis values decrease upward. Descending axes are not available on ternary graphs.

Axis Title

The Title Properties section controls the axis title text. Click the next to Title Properties to change the axis title text and font.

Title

Add a title to the axis by typing the axis title in the Text field. Math text instructions can be used in the title Text field. Click in the Text field to open the Text Editor dialog. For most graph types, when a graph is first created, the axis title is linked to the value in the first row of the worksheet for the associated data column in the plot. The Text field will show the linked cell number, for example <<@A1>>.

Font

Click the next to Font to change the axis title font properties.

Positioning

The Positioning option sets the axis title location relative to the axis. To change the Positioning, click on the existing option and select a new option. Select Automatic to allow Grapher to automatically position the title on the axis. By default, the title is centered on the axis and it is located just beyond the tick marks and tick labels. If the axis properties are changed, the title position adjusts for these changes. For example, if the tick labels are rotated 90 degrees, the title is placed farther from the axis to adjust for the additional space used by the rotated labels.

To place the title directly on the axis line, select the Relative option. This option is useful in customizing the location of the axis title using the X and Y offsets.

Title on Side

The Title on side sets the position of the title relative to the axis. Select the Right or Left side of a Y Axis or the Top or Bottom side of an X Axis. To change the Title on side, click on the existing option. Select the new option from the list.

Angled

In 3D graphs, check the Angled box to draw the axis title at the same angle as the axis. If this box is not checked, the title is displayed parallel to the screen, regardless of how the graph is rotated. When Angled is checked, the title automatically changes to match the rotation of the graph when the graph rotation is changed.

X and Y Offset

The axis title can be positioned at a custom position by entering values into the X offset or Y offset boxes. Entering a positive value into the offset box moves the title up for the Y offset or to the right for the X offset. Entering a negative value in the offset box moves the title down for the Y offset or to the left for the X offset.

Angle

You can enter a number into the Angle box to rotate the title. Positive values rotate the title in a counter-clockwise direction. The Angle is specified in degrees.

Axis Wall Fill

Click on the next to the Wall fill style option to control the 3D axis wall fill properties. The back wall properties are set by selecting the Graph object in the Object Manager. Click on the Line and Fill tabs to set the back wall line and fill properties.