Tutorials

Tutorials build complete, runnable charts and explain what each action adds. Choose the visual relationship that matches the question you want to answer.

New to ggaction?Install the package and render one complete browser chart first. Need only the shortest code?Switch to recipes when you do not need the step-by-step explanation.

Scatterplot

Compare two quantitative fields and encode a category with color.

createScatterPlot

Cars Polar scatterplot using acceleration angle and horsepower radius

Polar points

Map quantitative fields to clockwise angle and radial distance.

encodeTheta encodeR encodePointRadius

Polar lines

Connect ordered angle and radial values as grouped open paths.

createLineMark encodeTheta encodeR

Donut chart

Build proportional sectors with an inferred categorical color legend.

createArcMark encodeTheta encodeColor

Line chart

Aggregate values over time and split the result into series.

createLinePlot

Histogram

Bin a quantitative field and count category partitions.

createHistogram

Bar chart

Aggregate ordinal categories and arrange nominal groups side by side.

createBarPlot

Cars scatterplot with grouped regression lines and confidence bands

Regression scatterplot

Layer observations, grouped fits, and confidence bands.

createPointMark createRegression

Density area

Estimate grouped distributions and draw baseline-closed areas.

createAreaMark encodeDensity encodeColor

Kenya life expectancy folded into blue and red Horizon bands around 55 years

Horizon chart

Compress a long time series by folding values above and below a baseline.

createAreaMark encodeHorizon editHorizon

Car observations with grouped mean confidence intervals

Error bar

Keep observations visible while summarizing group uncertainty.

createErrorBar

Life expectancy confidence bands with explicit boundaries

Error band

Show interval ribbons with explicit lower and upper boundaries.

createErrorBand

Grouped maximum points highlighted as red diamonds

Mark selection and highlighting

Select, filter, and emphasize final point, bar, and line items.

selectMarks highlightMarks

The bar tutorial uses grouped bars as one layout of the general bar mark. The statistical tutorials compose ordinary data, marks, encodings, and guides rather than introducing a separate renderer path.