Frequency Bar Chart

Frequency Bar Chart icon Show discrete, numerical comparisons across categories by creating a bar chart with bar heights proportional to the number of cases in each group.


The classic Bar Chart uses either horizontal or vertical bars (column chart) to show discrete, numerical comparisons across categories. One axis of the chart shows the specific categories being compared and the other axis represents a discrete value scale.

Bars Charts are distinguished from Histograms, as they do not display continuous developments over an interval. A Bar Chart's discrete data is categorical data and therefore answers the question of "how many?" in each category.

Create a bar chart by selecting a categorical variable (X). This plot will return the count for each instance of X supplied, plotting each value on the Y axis. Add another categorical fill variable in order to split the bars accordingly.

One major flaw with Bar Charts is that labelling becomes problematic when there are a large number of bars.


An example ouput image for the Frequency Bar Chart module is coming soon.


Variable name Required Constraints Description
x Yes Column Input. Text, Integer, Boolean, Datetime (with timezone), Date The categories in this column will form the x-axis of the plot and a bar will be created for each category.
fill No Column Input. Text, Integer, Boolean, Datetime (with timezone), Date The categories of this column will be used to populate the group and fill optional parameters. Group will segment the x-axis bars dependent on the group's categories, with fill colouring the bar accordingly.

See Also

Updated on February 25, 2021

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