Diagram
Table of Contents
The diagram visualization displays a bar chart visualization. It accepts one or more data tables and maps column values to rectangles with a length proportional to the value. This gives a quick overview over the relation of a limited set of values.
Each bar in the diagram corresponds to one of its categories. If, for example, you set up an analysis that computes the average of values in a data column named "x" and the average of values in data column named "y", a diagram visualizing these results would have two categories, "x" and "y". The diagram would contain two bars, directly relating the average values of both columns.
A diagram may have multiple data series. A data series relates to a group of bars, so with multiple data series, there will be one bar group per series, each group containing one bar per category. If, for example, you set up an analysis to compute both the average and the standard deviation of two data columns "x" and "y", a diagram visualizing these results could have the two categories "x" and "y" and the two data series "Average" and "Standard deviation". The diagram would contain two groups of bars ("Average" and "Standard deviation"), each showing two bars ("x" and "y"). This enables you to compare different quantities within a single diagram.
The diagram node maps the rows of its input data to categories and the columns to data series.
When hovering the mouse cursor over a bar in the diagram, the tooltip will identify the bar (the corresponding data column and data set/scenario/participant information as appropriate) and its value.
Aggregation
The diagram visualization supports aggregation for data sets, scenarios, and participants. Aggregation combines the individual diagrams in the corresponding dimension by adding each combination of the aggregated dimension and the selected data columns as a diagram category. When simultaneously aggregating sets, scenarios, and participants, the result will be a single diagram with (number of data sets) times (number of scenarios) times (number of participants) times (number of selected data columns) categories.
Settings
- Data Columns:
- The data columns of the input data to be used as diagram series. The selected data columns should contain numerical data or no bars will be shown.
- First Column Is Label:
- If enabled, the first selected column will not be used as a diagram series. Instead, the value in this column will be used to identify the corresponding bar in the tooltip and the diagram legend. In this case, any column type is acceptable for the first column. This option is only available if more than one column is selected.
- Bar Colors:
- The colors to be used for the diagram bars. Categories (i.e. bars in bar groups) will be colored using the colors specified here. If there are more bars than colors, bars will cycle through the colors.
- Value Axis:
- Sets the range and interval spacing for the value axis of the diagram. By default, each diagram will scale its value axis based on the value range encountered in its data. In order to force multiple diagrams to the same value range, supply explicit values for the "Minimum" and "Maximum" settings.
- Minimum:
- The minimum value of the value axis or "Auto" to auto-detect an appropriate value
- Maximum:
- The maximum value of the value axis or "Auto" to auto-detect an appropriate value
- Interval:
- The interval of horizontal segmentation lines along the value axis or "Auto" to auto-detect an appropriate value
- Options:
- Various options for the diagram
- Use Color Gradients:
- If disabled, the bars will be rendered as simple, flat-shaded rectangles.
- Show Title:
- Shows a title above the diagram. The title includes the name of the diagram node and the names of the data set, scenario, and participants (unless the corresponding aggregation option is enabled, in which case a single diagram includes the data of all data sets/scenarios/participants).
- Show Legend:
- Shows a legend identifying the categories below the diagram. This is a three-state value. If it is indetermined, the legend will be displayed if there is more than one category in the diagram.