Attributes are used to describe your samples. Examples of sample attributes include treatment group, age, sex, and time point. Attributes can be added manually or using a tab-delimited text file with samples on rows and attributes on columns where the first column contains the sample IDs. In this tutorial, we will add one attribute, Treatment, manually.
- Select the Data tab
- Select Manage attributes (Figure 1)
- Select Add new attribute (Figure 2)
- Set Treatment as Name
- Select Categorical as Attribute type
- Select Project-specific for Visibility
- Select Add (Figure 3)
- Name the first New category 0uM
- Select Add
- Name the second New category 5uM
- Select Add
- Name the third New category 10uM
- Select Add
- Select Close to finish creating the attribute (Figure 4)
- Select Back to sample management table
The data table now includes an Attribute column for Treatment (Figure 5). Next, we need to assign samples attribute categories for Treatment.
- Select Edit attributes
The option to edit the Treatment field for each sample will appear as a drop-down menu (Figure 6).
- Select the Treatment text box for a sample to bring up a drop-down menu with the Treatment attribute categories (0uM, 5uM, 10uM)
- Use the drop-down menus to add a treatment group for each sample
The first three samples (SRR592573-5) should be 0uM, the next three samples (SRR592576-8) should be 5uM, and the final three samples (SRR592579-81) should be 10uM (Figure 7).
The data table will now show each a Treatment attribute for each sample.
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