Bar chart

A bar chart is a graph with rectangular bars. Each bar's length is proportional to the value it represents. Use bar charts to compare two or three variables using a single value.

When do you use it?

Basic bar charts

Bar charts are useful for comparing categories: the x-axis represents the category and the y-axis represents the value to compare.

Tip

You can also use a basic bar chart to create a histogram that displays the distribution of x-axis data. Histograms display the frequency of each unique value in the selected x-axis field as a bar that is proportional to the value.

Complex bar charts

Bar charts can represent more complex categories using grouped or stacked bars. Grouped or stacked bar charts use a third variable to sub-divide the comparison category:

  • grouped third dimension values are displayed as adjacent bars within the second dimension value
  • stacked a single second dimension bar is divided by the third dimension values
  • 100% stacked a single dimension bar is divided by the percentage each third dimension value contributes to the total

Note

Select the grouped vs stacked view setting on the upper left-hand corner of the chart.

Examples

Bar chart

Your organization is tracking sales data and needs to determine which regions are enjoying the highest sales numbers. Using a bar chart, you visualize the sales numbers and clearly demonstrate how each region is performing:

Stacked column chart

Your organization is tracking sales data and needs to determine which product categories are returning a negative profit.

Using a stacked column chart, you visualize the sales numbers and clearly demonstrate which product categories are performing well, and which are not. Stacking the third dimension also helps you determine which segment of each category is most responsible for the overall totals:

100% stacked column chart

You are performing an analysis of profits by customer segment. You want to visualize the proportion of each product category within the average profit of each customer segment.

To do this, you use a 100% stacked column chart that displays the percentage each product category contributes to the customer segment value:

Histogram

You are performing an analysis of customer web sites and you want to display the frequency of top-level domains used in the collection of sites. To do this, you use a histogram that displays the count of each unique top-level domain value in your table:

Data configuration settings

On the Configure panel, click Data and configure the following settings:

Setting Supported data types Description

X-Axis
  • character
  • numeric
  • datetime

The field to use as the basis for the chart's horizontal scale. One bar is created for each unique value in the field, or each unique combination of values if you also specify a Color by field.

Y-Axis

numeric

The aggregate value represented by the chart's vertical axis. You can select a count of the x-axis field or one of several aggregate values for a different numeric column in the table:

  • average
  • sum
  • min
  • max

Tip

Use the Count option to create a histogram that displays the distribution of data for the x-axis.

Color by

optional

character

The field represented by the third data dimension to the chart. Adding a third data dimension can sub-divide x-axis categories. You can think of the Color by field as a break field.

Chart display settings

On the Configure panel, click Display and configure the following settings:

Setting Description
Options
Show Legend Show or hide the legend at the top of the chart.
Show Values Show or hide the data point values.
Chart Type

How to display the third dimension of the chart (Color by):

  • Grouped use to compare the value of each segment within each category
  • Stacked use to compare the value each segment contributes to the total of the overall category while comparing category totals against each other
  • 100% Stacked use to compare the percentage each segment contributes to the total of each category
Rotate Horizontal Display the bar chart with the x-axis on the left-hand side of the chart and the y-axis running horizontally along the bottom of the chart.
X-Axis
Show Label Show or hide the label for the x-axis.
Y-Axis
Show Label Show or hide the label for the y-axis.
Min The minimum value to use for the y-axis. By default, the chart uses the lowest value of the y-axis data to determine the minimum.
Max The maximum value to use for the y-axis. By default, the chart uses the highest value of the y-axis data to determine the minimum.
Other settings
Sort by Sorts the data categories by ascending or descending total value. By default, the chart is sorted alphabetically.
Colors The colors assigned to each series in the Color by dimension.

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