Axis Tab - Enhanced Chart Customization Dialog Box

Item

Description

X-Axis Title

Allows you to specify the X Axis Title.

Y-Axis Title

Allows you to specify the Y Axis Title.

Show X-Axis

Allows you to specify how the X-axis grid, labels, and title are displayed on the chart.

Show Y-Axis

Allows you to specify how the Y-axis grid, labels, and title are displayed on the chart.

Max X-Axis Labels

Allows you to specify the maximum number (up to 20) of X-Axis labels.  

The chart logic calculates the number of labels to display on the X Axis based on settings such as chart size, duration, and number of points. When a maximum number is specified, the user can have partial control over this logic to display not more than the specified number of labels regardless of the chart configuration.

A value of “Unspecified” means the label spacing is automatically controlled by the chart.

For pictures created before iFIX 5.5 that are upgraded, the default value is 0. For all other pictures, the default value is 10.

NOTE: The Max X-Axis Labels field is only available for the Line Chart.

Item

Description

Linear

Specifies whether the Y-axis uses linear values.

Log

Specifies whether the Y-axis uses log values.

Auto

Allows iFIX to automatically scale the Y-axis so that all data points are within the visible area of the chart.

Min

Select to activate the Min field.

Max

Select to activate the Max field.

Min/Max

Select to activate both the Min and Max fields.

Use Data Source Limits

Select to allow iFIX to automatically determine the minimum and maximum axis limits using the limits of all selected data sources.

Min

Allows you to specify the minimum value for the Y-axis.

NOTE: When you select this option the maximum axis value will be automatically scaled based on the data points in the chart and padding field.

Max

Allows you to specify the maximum value for the Y-axis.

NOTE: when you select this option the minimum axis value will be automatically scaled based on the data points in the chart and padding field.

Padding

Allows you to set the percentage of the total range of the Y-axis allocated to providing space above and below the highest and lowest data points when the axis values are automatically scaled. Padding prevents the data points from intersecting with the top or the bottom of the chart. Acceptable values: 0-100.

Your selection for Auto, Min, Max, or Min/Max determines if and where padding is applied. The selections have the following results:

• Auto – padding is applied to both the bottom and the top of the range.
• Min – padding is applied to the top of the range.
• Max – padding is applied to the bottom of the range.
• Min/Max – padding is not applied.

Item

Description

Linear

Specifies whether the X-axis uses linear values.

Log

Specifies whether the X-axis uses log values.

Use Data Source Limits

Select to allow iFIX to automatically determine the minimum and maximum axis limits using the limits of all selected data sources.

Clear the checkbox to allow iFIX to automatically scale the X-axis so that all data points are within the visible area of the chart. In effect, this enables auto-scaling.

Padding

Allows you to set the percentage of the total range of the X-axis allocated to providing space above and below the highest and lowest data points. Padding prevents the data points from intersecting with the top or the bottom of the chart. Acceptable values: 0-100.

NOTE: For XY charts, for the X axis, Use Data Source Limits must not be selected for padding to apply.