Using the DataSet Include Field

The DataSet "Include" property allows portions of the data to be ignored ("excluded") from analysis. This can be used on samples (rows of the data) or variables (columns of the data). Below are step-by-step directions for excluding variables from analysis using a plot of the data. Similar steps can be used to exclude samples.

To select only a portion of variables to analyze (e.g. a subset of the wavelength range of the calibration spectra) in the Analysis window, do the following:

1. Click on the "X" button in the Analysis Status Pane and select "Plot" from the context menu. This will bring up a plot of your data along with a "Plot Controls" window.
2. In the Plot Controls, select "Variables" for the x-axis. You should now see a plot of the mean sample (e.g. a mean spectrum).

   HINT: if you want to exclude samples from an analysis, choose "Samples" for the x-axis here and use the rest of these instructions as-is.

3. Using the "Select" button in the Plot Controls, select the range of variables you want to include in the analysis.

   HINT: if you want more than one non-consecutive range, select one range first, then, click "select" again and hold down the "shift" key before selecting the next range.

4. From the "Edit" menu on the Plot Controls, select "Exclude Unselected". This will exclude all of the points you have NOT selected.

   HINT: If you want to re-include variables which you have previously excluded, first select "View/Excluded Data" on the Plot Controls, then, use the Select button along with the "Edit/Include Selection" menu to re-include the selected variables.

Any variables you have excluded will NOT be used in any analyses.