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Charts - Scatter

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Charts-Scatter.png

This type of chart is used to compare variables, and is usually used where there is a known correlation between those variables, or perhaps to identify possible correlations. A scatter plot can be used either when there is one continuous variable that is under the control of the experimenter and the other depends on it or when both continuous variables are independent. If a parameter exists that is systematically incremented and/or decremented by the other, it is called the control parameter or independent variable and is customarily plotted along the horizontal axis. The measured or dependent variable is customarily plotted along the vertical axis. If no dependent variable exists, either type of variable can be plotted on either axis and a scatter plot will illustrate only the degree of correlation(not causation) between two variables.

A Scatter chart consists of the following groups:

General

The General tab is used to define the general layout of a table as well as the default period display and which indicators to display. The General tab consists of Chart, Title and Period.

Chart

Charts-ScatterGeneral.png

Under the Chart section we have the following properties:

  • Back Color
This sets the color of the background area that surrounds the chart. The default is the “Windows” theme color.
  • Left
This sets the padding to the left of the chart. The default is 0.
  • Right
This sets the padding to the right of the chart. The default is 0.
  • Top
This sets the padding to the top of the chart. The default is 0.
  • Bottom
This sets the padding to the top of the chart. The default is 0.
   

The figure below shows the effect of updating the above properties for a Scatter Chart. The properties are annotated to demonstrate the effect of each of the properties on the chart.


Charts-ScatterUpdatedProperties.png

Title

Refer to the general “Title” chart properties section for more information.

Period

Refer to the general “Period” chart properties section for more information.

Base

The base axis will provide the capability to add the control parameter or independent variable that will be plotted on the x-axis of the scatter chart. A measure with the same interval type as per the chart definition can be added to the base axis by means of a drag and drop operation from the Model view.

Charts-ScatterBaseAxis.png

Base axis and measures will have the following configuration settings:

Base Axis

Base axis settings include the way formatting and scaling will be applied to the axis. Below is a list of the base axis properties:

  • Scale
This is used to autoscale the values on the base axis. Alternatively, fixed scale values can be supplied.
  • Include Zero
This is used to always include zero on the base axis. If not included, the minimum value of the axis will be the smallest value in the dataset.
  • Font Color
This is used to configure the color of the font of the axis.
  • Font Size
This is used to configure the size of the font of the axis.
  • Label Visible
This is used to determine if the value label of the axis should be displayed or not.
  • Label Rotation
This is used to rotate the values on the value axis if the label is visible.
   

Measure

Charts-ScatterMeasureBase.png

Series and Stacks

Charts-ScatterSeriesStacks.png

Series have the capability to plot variables against the base measure. Multiple “Stacks” can be added to plot scatter charts stacked on top of each other but with the same base measure. Multiple measures can also be added to a stack. Stacks can be added, removed and reordered in the Series tab. Stacks have the following properties:

Charts-ScatterAddStacks.png

  • Title
This sets the stack’s title text.
  • Caption
This sets the caption text that is 60% of the size of the main title’s font. This text is displayed below the title.
  • Font Color
This sets the font color of the stack’s title text.
  • Font Size
This sets the size of the stack’s title text.
  • Font Bold
This sets whether the text in the title cell is bold.
  • Font Italic
This sets whether the text in the title is italicized.
  • Collapsed
This specifies that if a stack is collapsed by default, the stack can still be expanded/collapsed by clicking the on the title.
   

Axis

One axis can be configured per stack. An axis can be configured with the following properties:

Charts-ScatterStackAxis.png

  • Title
This sets the stack’s title text.
  • Scale
This is used to autoscale the values on the base axis. Alternatively, fixed scale values can be supplied.
  • Include Zero
This is used to always include zero on the base axis. If not included, the minimum value of the axis will be the smallest value in the dataset.
  • Font Color
This is used to configure the color of the font of the axis.
  • Font Size
This is used to configure the size of the font of the axis.
  • Label Visible
This is used to determine if the value label of the axis should be displayed or not.
  • Label Width
This is used to rotate the values on the value axis if the label is visible.
   

Measures

General

The General section is used to set the title of the measure as well as the shape and line width of the points plotted on the chart. The default title for the row is set to the measure’s name and can be overwritten.

Charts-ScatterMeasuresGeneral.png

Limit

The Limit section is used to configure which measure limit is displayed on the chart. The line style and width can also be configured.

Chart-ScatterLimitSection.png

Context

The Context section is used to configure additional context to be added to the plotting surface. This context is linked to an event scheme that is configured on the measure itself.

Charts-ScatterContextSection.png

The event attribute colors will be used as a provider to change the color of the points as per the different colors of the event attribute.

Charts-ScatterColors.png

Color

The Color section is used to configure the measure’s data point colors and behavior. The base color can be set when clicking on the Color item. Base color is a static color used to color the cell background. Opacity sets the opacity of the cells and defaults to 0. It is possible to add the following color providers:

  • Measure
This color provider will set the color based on the values of another measure (the measure that you configure here). By default, the measure that represents the row is the linked measure.
   

Charts-ScatterMeasureColorProvider.png

The Measure Color Provider has the following properties:

  • Low Color
This color is used for the background of the cell if the value of the source measure is towards the lower end of the scale.
  • High Color
This color is used for the background of the cell if the value of the source measure is towards the higher end of the scale.
  • Steps
This is used to specify how the colors are distributed between the Low Color and the High Color. If this value is 0 it means that the colors will be mixed together in an infinite number of steps.
  • Scale
This is used to determine the scale. If it is automatic, the scale is automatically calculated based on the range of values of the source measure, otherwise the Low and High values must be specified.
  • Use Base Color
This will mix in to the color range, the base color for the row if it is set to true, if the value is in the middle of the scale’s range, the background color will be set to the base color.
   

To change the source measure of the Measure Color Provider, it must be created first and then another measure can be dragged on to it.

Size

Charts-ScatterDataPointSize.png

The Size section is used to configure the measure’s data point size. The base size can be set when clicking on the Size item. It is possible to add the following size providers:

  • Measure
This size provider will generate a size map based on the value of the measure linked to it. By default, the measure that represents the point is the linked measure.
   

The Measure Size Provider has the following properties:

  • Low Size
This is used to change the size of the data point to the smallest size if the value of the source measure is towards the lower end of the scale.
  • High Size
This is used to change the size of the data point to the biggest size if the value of the source measure is towards the higher end of the scale.
  • Steps
This is used to specify how the sizes are distributed between the Low Size and the High Size.
  • Scale
This is used to determine the scale. If it is automatic, the scale is automatically calculated based on the range of values of the source measure, otherwise the Low and High values must be specified.
   

To change the source measure of the Measure Size Provider, it must be created first and then another measure can be dragged on to it.

UI Interaction

Additional functionality available in a Table report includes:

  • Cell “Drilldown”
Clicking an individual cell will open a Drilldown overlay providing details of that measure value (calculation inputs, comments and versions.
   
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