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3.1 KiB
3.1 KiB
title: Bar Chart sidebar_position: 1
Bar Chart Component
The Bar Chart component is used to visualize categorical data with rectangular bars.
Props
| Prop | Type | Default | Description |
|---|---|---|---|
data |
array |
[] |
Array of data objects to visualize |
width |
number |
800 |
Width of the chart in pixels |
height |
number |
600 |
Height of the chart in pixels |
xField |
string |
- | Field name for x-axis values |
yField |
string |
- | Field name for y-axis values |
colorField |
string |
- | Field name for color encoding |
colorScheme |
string |
'supersetColors' |
Color scheme to use |
showLegend |
boolean |
true |
Whether to show the legend |
showGrid |
boolean |
true |
Whether to show grid lines |
labelPosition |
string |
'top' |
Position of bar labels: 'top', 'middle', 'bottom' |
Examples
Basic Bar Chart
import { BarChart } from '@superset-ui/chart-components';
const data = [
{ category: 'A', value: 10 },
{ category: 'B', value: 20 },
{ category: 'C', value: 15 },
{ category: 'D', value: 25 },
];
function Example() {
return (
<BarChart
data={data}
width={800}
height={400}
xField="category"
yField="value"
colorScheme="supersetColors"
/>
);
}
Grouped Bar Chart
import { BarChart } from '@superset-ui/chart-components';
const data = [
{ category: 'A', group: 'Group 1', value: 10 },
{ category: 'A', group: 'Group 2', value: 15 },
{ category: 'B', group: 'Group 1', value: 20 },
{ category: 'B', group: 'Group 2', value: 25 },
{ category: 'C', group: 'Group 1', value: 15 },
{ category: 'C', group: 'Group 2', value: 10 },
];
function Example() {
return (
<BarChart
data={data}
width={800}
height={400}
xField="category"
yField="value"
colorField="group"
colorScheme="supersetColors"
/>
);
}
Best Practices
- Use bar charts when comparing quantities across categories
- Sort bars by value for better readability, unless there's a natural order to the categories
- Use consistent colors for the same categories across different charts
- Consider using horizontal bar charts when category labels are long