Category Variable
The Category Variable field is used to specify a character variable containing annotation categories. This variable is often obtained from an ontology hierarchy like the Gene Ontology (GO) or from lists of pathways. Multiple categories within a value must be separated by one or two common delimiters, as specified on the General tab. If a row has a blank value for this variable, then that row is excluded from the analysis.
To Specify a Category Variable:
| 8 | Specify the Annotation SAS Data Set. |
All of the variables in the specified annotation data set are displayed in the Available Variables field.
| 8 | Examine the list of available variables. |
| 8 | Highlight the variable containing the annotation categories. |
| 8 | Click  to add the highlighted variable to the Category Variable field, as shown below: |
