Setting Up Y Axis Scale

To set the minimum scale value to show at zero mark position, select one of the radio buttons:

• Auto. Automatic mode of axis display. The radio button is selected by default.

• Fixed. Set the minimum value using the value editor or the keyboard.

A zero marker is the scale tick mark that corresponds to zero value of the measured value.

Below are the examples of a chart with the applied automatic mode of axis display (left) and the minimum value 2 set for Y axis (right):

NOTE. If the minimum value for the Y axis is set, the data outside the plot area is cut off.

To set the maximum scale value, select one of the radio buttons:

• Auto. Automatic mode of axis display. The radio button is selected by default.

• Fixed. Set maximum value using the value editor or the keyboard.

Below are the examples of a chart with the applied automatic mode of axis display (left) and the maximum value 6 set for Y axis (right):

NOTE. If the maximum value for the Y axis is set, the data that overlaps the plot area is cut off.

To set up major tick mark intervals, select one of the radio buttons:

• Auto. Automatic calculation of scale tick mark intervals. The radio button is selected by default.

• Fixed. Set interval value using the value editor or the keyboard.

NOTE. Radio buttons are available in the Major Tick Mark Intervals group of parameters when basic scale parameters are displayed, or in the Major Tick Marks group of parameters when advanced scale parameters are displayed.

To set up intersection with the X axis, in the Crosses X Axis drop-down list select the Y axis position option:

• Auto. Crosses the X axis at the minimum value. Default.

• At the Specified Point. Crosses the X axis at the specified point. If this value is selected, the box to specify point value opens.

NOTE. If Y axis offset is defined, and the point at which it crosses X axis is selected, the Y axis is offset by a specified value relative to the selected point.

• Maximum Value. Crosses the X axis at the maximum value. Axes labels are outside the plot area.

NOTE. It is impossible to set the position where the secondary Y axis crosses the X axis, as auto position is used.

To place axis between specified categories, select the Position Axis Between Tick Marks checkbox.

NOTE. The axis position between the categories is available if the At the Specified Point X axis intersection option is used.

To show axis values in reverse order, select the Reverse Order of Values checkbox. The value axis Y is shown relative to the category axis X.

Below is the example of a chart without the reverse order (left) and with the reverse order (right):

NOTE. Axis values can be placed in the reverse order in all types of charts, except for radar charts.

To set up the number of scale tick mark intervals, select the Fixed Number of Intervals radio button and set the number of tick mark intervals using the value editor or the keyboard.

To set up the distance between scale tick marks, select the Guaranteed Distance radio button and set the value in millimeters using the value editor or the keyboard.

NOTE. Distance between tick marks can be set up only in the desktop application. Parameters specified in the desktop application are not applied in the web application.

To plot a scale in the specified mode, select the Other radio button, select the plotting mode in the drop-down list and set up it.

NOTE. Scale plot mode can be set up only in the desktop application. Parameters specified in the desktop application are not applied in the web application.

The following scale plotting modes are available:

• Clustering Scaling. The mode is used for non-uniform data, for example, there are values equal to 1 and 1000. The mode enables the user to display data, omitting uninformative scale intervals. The output scale becomes uneven, but the graph becomes more obvious.
  In the Parameter box select absolute step of scaling expressed in scale units. If the increment of the next series (series are considered in ascending order) relative to the previous one is greater than the specified step, the increment on the scale is limited to this step.
  Below is the example of a histogram with the same source data using clustering at absolute step of ten (left) and without using clustering (right):

If this scale plotting mode is used, the chart shows an uneven scale at the left, but the chart becomes more obvious.

• Distributed Scaling. This mode is similar to clustering, but the scaling step in the Parameter box is defined in percents of difference between two sorted neighbor series.

• Logarithmic Scale. Scale values are calculated with the base-10 logarithm depending on the available data.

NOTE. Only the Logarithmic Scale plotting mode is available for scatter charts.

Scale breaks are special breaks on the Y axis, that are often used to distribute data points along the chart. This facilitates reading in cases, when the maximum values of displayed data differ strongly from the minimum ones.

NOTE. Scale breaks are available for the following chart types: line chart, histogram, area chart, mixed chart. A chart should be 2D and without stacking.

To set up scale breaks, select one of the radio buttons in the Scale Breaks group of parameters:

• None. Scale breaks are not created. The radio button is selected by default.

• Auto. One or several scale breaks are created automatically depending on the selected scale plotting mode: Clustering Scaling, Distributed Scaling, and Logarithmic Scale.

NOTE. Automatic creation of scale breaks is available only in the desktop application. Parameters specified in the desktop application are not applied in the web application.

• In Range. Scale breaks are created in the specified range. The radio button is available for the following scale division methods: Auto, Fixed, Fixed Number of Intervals, and Guaranteed Distance.

Below is the example of a chart with different types of scale breaks for Y axis:

The charts display scale breaks in the 4-9 range with the following scale division methods:

• The first chart - Specified Number of Intervals with the 3 value.

• The second chart - Fixed with the 2 value.

• The third chart - Guaranteed Distance with the 8 value.

NOTE. Displayed units can be set up only on the Y axis.

To display large values, use scaling on the axis. Therefore, they will occupy less space on the axis. Values are scaled according to the formula: X = A * B, where A is initial value, B - scale coefficient.

To select axis scaling, in the Display Units group of parameters execute the operations:

• Select a display unit (hundreds, thousands, or other) in the drop-down list. Measurement units for the scale are not used by default, and the Not Specified option is selected.

• Enter a caption for the selected unit in the Caption box. To set caption format, click the button. The Caption Format dialog box opens.

For example, the axis displays the values: 5000, 10000, and so on. After the Thousands scale is applied the axis displays the following values: 5, 10, and so on. Below is the example of a line chart without scaling (left) and with the Thousands scaling option (right):