CQCharts is a Qt based charting library to support the display of an interactive chart from a data model (QAbstractItemModel) with support for cross selection using the data model's selection model (QItemSelectionModel).
Charts are live in that changes to the data model automatically update the chart. This allows the programmer to build interactive charts where the user can select items from the model using a table or tree view and/or the displayed chart data.
The library comes with a test program which supports scripting of charts using the 'tcl' programming language. A number of example plot scripts are available in the data directory.
Chart types supported
- Adjacency
- tabular connectivity table (needs special column value syntax for connections)
- tabular connectivity table (needs special column value syntax for connections)
- BarChart
- 1d bar chart for column values
- 1d bar chart for column values
- Box
- Box plot of aggregated values from value and group columns
- Box plot of aggregated values from value and group columns
- Bubble
- Bubble plot where circle is size of column value
- Bubble plot where circle is size of column value
- Chord
- Circlular connectivity chart (needs special column value syntax for connections)
- Circlular connectivity chart (needs special column value syntax for connections)
- Delaunay
- Delaunay/Voronoi geometric connectivity chart
- Delaunay/Voronoi geometric connectivity chart
- Distribution
- Distribution count of range based column values
- Distribution count of range based column values
- ForceDirected
- Force directed connectivity chart
- Force directed connectivity chart
- Geometry
- General polygon geometry colored by value
- General polygon geometry colored by value
- HierBubble
- Hierarchical bubble plot where circle is size of column value
- Hierarchical bubble plot where circle is size of column value
- Image
- Image/regular grid plot (x, y, color)
- Image/regular grid plot (x, y, color)
- Parallel
- Parallel lines plot using multiple connected value sets
- Parallel lines plot using multiple connected value sets
- Pie
- Pie chart
- Pie chart
- Radar
- Radar (polygon pie chart)
- Radar (polygon pie chart)
- Sankey
- Sankey plot of connected values
- Sankey plot of connected values
- Scatter
- Scatter plot of disparate x/y column values
- Scatter plot of disparate x/y column values
- Sunburst
- Hierarchical pie chart plot
- Hierarchical pie chart plot
- TreeMap
- Hierarchical tree map
- Hierarchical tree map
- XY
- x/y monotonic value plot
- x/y monotonic value plot
Uses table cell coloring to show number of connections between two items.
Items names are displayed in the row and column headers and the number of connections is used to color the cell (row/column intersection).
Cell colors are derived from the blend of the colors for each item's group and the color intensity is calculated from the relative value.
The following values can be customized:
- table background color
- empty cell color
- margin
- cell border color, alpha and corner size
- header text color and font
Input data model can contain either node data (name, id, group) and a list of connections (id, count) [old format] or a '/' separated connection data (from name/to name, value, count).
1d bar chart for column value or values.
Bars can be grouped using a group/category column.
Custom bar colors and data labels can be provided in additional columns.
Bars can be stacked next to each other or on top of each other and can be drawn vertically (default) or horizontally.
Box plot of aggregated values from value and group columns.
Input data is a set of y values for an associated common x value.
Data can also be additional grouped by an extra column.
Values can be displayed as a candlestick bar or connected into a single solid bar of the value range.
Bubble plot where circle is size of column value.
Circles are packed in minimum enclosing circle.
Circlular connectivity chart.
Input data model can contain either node data (name, id, group) and a list of connections (id, count) (old format) or '/' separated connection data (from name/to name, value, count).
Delaunay/Voronoi geometric connectivity chart
Distribution count of range based values
Force directed connectivity chart
General polygon geometry colored by value
Hierarchical bubble plot where circle is size of column value.
Hierarchical circles are packed in minimum enclosing circle.
Image plot (x, y, color)
Parallel lines plots multiple overlaid value sets
Pie chart
Radar (polygon pie chart)
Sankey plot of connected values
Scatter plot of disparate values
Hierarchical pie chart plot
Hierarchical tree map
Plot of x,y values. x values should be monotonic.
Multiple y columns can be supplied to produce multi line plot.
Binariate plot using two y columns.
Display of connecing lines and individual points can be customized.
Each plot type has a set of parameters which allow the major plot controls to be configured.
The plot also support properties for fine tuning the plot display.
The parameter and properties use Qt variants (QVariant) and are displayed in a property view tree which can be displayed at the side of the plot.
The data model can be viewed in a table or tree view in the plot and can be sorted and filtered to update the plot.