Line Chart

The Line chart represents a series of data as a line or multiple lines, plotted across time or another numerical dimension.

Features Quantity Notes
Required Dimensions 1-2 Dimension 1 = X Axis, Dimension 2 = Series
Required Measures 1 Measure 1 = Y Axis.

The optional multi-series capability of the Line chart can break out values by an additional dimension.

Line Chart Examples

Create a new Line chart. Choose a Data Source. This example uses the official database of UFO sightings

Categorize UFO sightings on the Dimension sighting_time and set the Measure to the number of records (the number of sightings).

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Adding the Dimension shape displays a separate line for each sighting type across time.

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The records go back to 1905, with very few recorded sightings. Selecting a more recent 10-year block presents information in a more digestible form. For an ad hoc report, you can brush across values in the Range Chart to filter a smaller number of data points, or you can enter start and end dates on the x axis for precise values.

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When you set the x axis to a date/time value, you have the option of setting the intervals to month, quarter, or year. Setting the BIN to 1y can make the values easier to discern.

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You can change from a line chart to an area chart, adding more contrast to make the differences between the values more apparent.

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Once you are satisfied with the range values in the chart, you can turn off SHOW RANGE CHART to regain some screen space.

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You can also reduce the number of series displayed by removing their entries on the COLOR PALETTE.

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After you reduce the scope of the chart, you can change the labels on the axes and the chart title to reflect the current state of the information.

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