Axis Properties - Break Axis Page

Linear, log base 10, and natural log scaled standard axes can be broken using the Break axis option in the Break Axis page. You can set these default axis properties through File | Defaults under the Break axis section of a selected axis type. The selected break axis properties appear in the Property Manager. An axis break removes the selected portion of the axis from the view, replacing that section with an empty spot, or break, in the plot. Plots are broken at the break axis value and continue on the other side of the axis break.

 

Set the location and appearance of the axis break on the Break Axis page.

 

Break Axis

Select the Break axis option to add an break in the axis.

 

Break From/To

Enter break boundaries into the Breakfrom and Breakto fields. These fields determine the range of values that are removed from the plot. The axis is broken between the Break from and Break to values, and any plots do not display data in this range. The axis includes values from the axis minimum to the Break from value, a break occurs, and then proceeds from the Break to value to the axis maximum. To change the Break from or Break to values, highlight the existing value and type a new value. Press ENTER on the keyboard to make the change.

 

Break Range with Date/Time Formatting

If you have enabled date/time formatting, the axis break can be set with date and time values. To set the limits based on dates and time, set the date and time by clicking on the current date and time in the Break from date/time or Break to date/time fields, and set the limits in the Select Date/Time dialog. Alternatively, type the date value in the Break from date/time or Break to date/time field. These options only appear in the Property Manager when the axis uses date/time formatted data. You can also set the date/time break in numeric format in the Break from and Break to fields. If Break from date/time or Break to date/time are set, Break from and Break to change accordingly and vice versa. 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.

 

Break Mark Properties

The axis break can be indicated by lines on the axis and plot(s).

 

Type

Select the type of axis break symbol in the Type list. Select None to display no marks. Select Perpendicular lines (-), Diagonal lines (/), or Curved lines (~) to indicate the axis break with symbols.

 

Length

Specify the length of the axis break marks in the Length property field.

 

Break Plot With

Select an option from the Break plot with list to indicate where the plot is broken by the break axis with lines or symbols.

  • Select None to display no marks.

  • Select Symbol to display a symbol at places where the plot is broken. The Plot break symbol section includes the symbol properties for the break symbol.

  • Select Axis break mark to use the axis break mark at the plot breaks as well.

  • Select Grid line to add grid lines before and after the break.

 

Break Position and Scale

There are two options for setting the location of the break on the axis, Break at and Fixed scale.

 

The Breakat option locates the break based on a percent of the axis. For example, a break at 25 percent is one quarter from the axis starting position. When this option is used, the axis scale before the break may not equal the axis scale after the break. To change the Break at value, highlight the existing value and type a new value. Press ENTER on the keyboard to make the change. Alternatively, click the to increase or decrease the value. The Break at value must be between 5% - 95%.

 

The Fixed scale option locates the break based on the data values, keeping the axis scale the same on each side of the break. When this option is checked, the break is automatically positioned and the distance of one unit before the break equals the same distance as one unit after the break. To assign a Fixed scale, check the box next to the Fixed scale command.

 

Tick Spacing

Click the next to Tick spacing to see the tick spacing options. The tick spacing Before and After fields control the major tick mark spacing before and after the axis break. If Default is selected, the Tick Marks tab settings control the tick spacing. If you select Custom, set the tick spacing value in the Before and After fields.

 

To change the Tick spacing, click on the word Default next to Before or After and select Custom. Then highlight the existing value and type a new value. Press ENTER on the keyboard to make the change. Alternatively, click the next to the value to increase or decrease the value. To return to the default values, click the word Custom and select Default. Before or After will revert to the default scaling, as set on the Tick Markstab.

 

Minor Tick Division

Click the  next to Minor tick division to see the tick division options. The minor tick division Before and After fields set the minor tick division before and after the break. If Default is checked, the Tick Marks tab settings control the minor divisions. If you select Custom, set the custom minor tick divisions in the Before and After fields.

 

To change the Minor tick division, click on the word Default next to Before or After and select Custom. Then highlight the existing value and type a new value. Press ENTER on the keyboard to make the change. Alternatively, click the next to the value to increase or decrease the value. To return to the default values, click the word Custom and select Default. Before or After will revert to the default number of divisions, as set on the Tick Marks tab.

 

After Scale

The After scale option sets the axis scale to linear, log base 10, or natural log scale after the break. If Default is selected, the scale set on the Axis tab is used on both sides of the break. If one of the other options is set, the Scale on the Axis tab controls the scale before the break. The After scale controls the scale after the break. To change the After scale, click on the existing option and select a new option from the list.

 

 

See Also

Standard Axes

File | Defaults

Text Properties

Axis Limits

Date/Time Formatting

Axis Types

Ternary Axis Tips

Axis Properties

Tick Marks

Tick Labels

Link Axis