The Split by Attribute Downsample Cell task is used to split a data node into different nodes based on the groups in a categorical attribute, each data node only includes the samples/cells from one group. It is a more efficient way to filter your data if you plan to perform downstream analysis on each and every group separately in an attributerandomly downsample the number of cells in a  single cell data set. This task can be used to reduce the size of large single cell datasets to small and manageable sizes.

Click on the data node and select split by attribute from the Filtering section in  task menu (Figure 1).

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