We have too many variables (>100 ROIs, and additional ones from SPARE, etc). Its' difficult for the user to even select from such a long list
We provide a selector (may be in a separate "settings" panel/tab) to the user to select the set of variables they want to use. The selection will use a dictionary with variable types to group them in meaningful batches (potentially with overlapping elements). For example "all ROIs", "primary ROIs (a set of major regions)", "SPARE scores", etc
We could use multiple tiers of selectbox. For example, first selectbox selects a batch. On update, this batch is used to populate the second selectbox. This second selectbox selects the individual feature.
We have too many variables (>100 ROIs, and additional ones from SPARE, etc). Its' difficult for the user to even select from such a long list
We provide a selector (may be in a separate "settings" panel/tab) to the user to select the set of variables they want to use. The selection will use a dictionary with variable types to group them in meaningful batches (potentially with overlapping elements). For example "all ROIs", "primary ROIs (a set of major regions)", "SPARE scores", etc