Scatter chart

A scatter chart shows the relationship between two values (dimensions or measures). Their values are represented as points. A scatter chart always has two axes: the values of one dimension or measure are plotted along the X-axis and those of the other along the Y-axis. A data point that links these two values is displayed at the intersection of the X and Y coordinates. These data points can be distributed along the X-axis evenly or unevenly, depending on specific data.

Use this type of chart if you need to find the dependency between dimensions and measures or show a range of values. For example, the relationship between the average order value and the number of orders for a product.

You can also represent dependencies on a scatter chart using point sizes. The size of a point depends on the measure value: the higher the value, the larger the point size. For example, the size of a point may depend on the discount on a product.

A slice of two rows from the source table

Product	Category	Average order value	Number of orders	Discount
Floor cleaner liquid	Household cleaners	153.0	1	0
Multicooker with 40 modes	Home appliances	3442.0	1	0
Liquid detergent for colored clothes	Household cleaners	525.0	1	0
Carpet detergent	Household cleaners	463.0	1	0
Lemon dishwashing liquid	Household cleaners	362.0	1	0

You can use a gradient in a chart by adding a measure to the Color section. For example, the higher the average order value for a product, the darker the point shade.

Wizard sectionsWizard sections

Wizard section	Description
X	Dimension or measure. Sets the X-axis value.
Y	Dimension or measure. Sets the Y-axis value.
Points	Dimension. Specifies the number of points on the chart.
Point size	Measure. Sets a point size depending on the measure value.
Colors	Dimension or measure. Affects the color of points.
Sorting	Dimension. Can only use a dimension from the X axis. Affects the sorting of the X axis. The sorting direction is marked with an icon next to the field: for ascending or for descending. To change the sorting direction, click the icon.
Filters	Dimension or measure. Used as a filter.

Creating a scatter chartCreating a scatter chart

To create a scatter chart:

1. Go to the DataLens home page.
2. In the left-hand panel, select Charts.
3. Click Create chart → Chart.
4. At the top left, click Select dataset and specify the dataset to visualize. If you do not have a dataset, create one.
5. Select Scatter chart as the chart type.
6. Drag a dimension from the dataset to the X section.
7. Drag one or more measures from the dataset to the Y section. The values will be displayed as points at the intersection of the X and Y axes.

You can also:

1. Change the color of points:

   1. Drag a dimension or measure to the Colors section.
   2. Click and set new colors.

2. Resize points:

   1. Drag the measure to the Point size section.
   2. Click and set the minimum and maximum point sizes for the specified measure.

3. Specify an additional dimension. To do this, drag a dimension to the Points section.

Configuring the display of valuesConfiguring the display of nullvalues

If the source data includes a row where the measure value is null, the chart will not be built for that point at default settings. For example, if the source has a row with a date (20.07.2022) but the sales amount for it is missing.

You can configure how the chart will display null values in the chart section settings:

1. In the section with a measure whose values you want to show, in the top-right corner, click (the icon appears when you hover over the section).
2. In Empty values (null), select Display as 0.
3. Click Apply.

Now, the chart will use 0 instead of null.

If a row is missing from the source data completely, the chart section settings will not change the way the chart is presented. For example, if the source does not have a row with a certain date (20.07.2022), nothing will be shown for this date on the chart.

For more information, see Configuring the display of null values.

RecommendationsRecommendations

• If the values of the categories contain a large amount of text, try to reduce it. Then the signatures on the diagram will look more accurate. You can use string functions in the calculated fields or conditional operators CASE.

• The axis scale often varies and may start with a value other than 0. Pay attention to value signatures.
• A scatter chart isn't suitable for visualization of data over time.
• When visualizing multiple measures, select colors carefully. They should be distinguishable and contrasting.