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Line charts, bar charts, and area charts |
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They're pretty useful.
Line charts are best for displaying the trend of a number over time, especially when you have lots of x-axis values. For more, check out our Guide to line charts and Time series analysis tutorials.
If you're trying to group a number by a column that has a lot of possible values, like a Vendor or Product Title field, try visualizing it as a row chart. Metabase will show you the bars in descending order of size, with a final bar at the bottom for items that didn't fit.
If you have a bar chart like Count of Users by Age, where the x-axis is a number, you'll get a special kind of chart called a histogram, where each bar represents a range of values (called a "bin"). Note that Metabase will automatically bin your results any time you use a number as a grouping, even if you aren't viewing a bar chart. Questions that use latitude and longitude will also get binned automatically.
See Combo charts.
By default, Metabase will automatically choose a good way to bin your results. But you can change how many bins your result has, or turn the binning off entirely, by clicking on the area to the right of the column you're grouping by:
Area charts are useful when comparing the proportions of two metrics over time. Both bar and area charts can be stacked.
These three charting types have very similar options, which are broken up into the following tabs. You can access these chart settings by clicking the gear icon in the lower left of the chart.
Here you can configure settings for the how the data is displayed.
For each series on the chart, you can:
You can also rearrange series (which determines their order in the chart's legend).
For bar charts, you can configure:
Here you set things like:
Goal lines can be used in conjunction with alerts to send an email or a Slack message when your metric cross this line.
Trend lines are another useful option for line, area, bar, and scatter charts. If you have a question where you're grouping by a time field, open up the visualization settings and turn the Show trend line toggle on to display a trend line. Metabase will choose the best type of line to fit to the trend of your series. Trend lines will even work if you have multiple metrics selected in your summary. But trend lines won't work if you have any groupings beyond the one time field.
If you have multiple series, you can stack them on bar chart.
As well as stack them as a percentage:
You can show some values (Metabase will pick some values to make the chart more legible), all values, or no values.
If you toggle on values on data points, you can toggle values for individual series on the Data tab of the chart's settings. For example, if you have four series, and only want to display values for one of the series.
For displaying numbers on the chart, Metabase can truncate the numbers to make the chart more legible. For example, Metabase will truncate 42,000 to 42K.
Here you'll find additional settings for configuring your x and y axes (as in axis, not battle axe).
For charts with multiple series or breakouts, chart legend displays the label and color of each series.
You can change the color and label for each series and reorder them in data settings.
You can use the legend to:
To permanently hide the series from the chart, use the data settings.
Currently, you can't hide the legend or change its position on the chart.
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