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2.28 FAQ-461 How do I normalize a data matrix?

Last Update: 1/31/2018

Set Matrix Value

You can open Set Values dialog to write formula for matrix calculation. There are also built-in math and statistics functions available from Function menu in the dialog. This script normalizes the data to have a min value of 0 and max value of 1. You can modify script as needed for different normalization values.

  1. With Matrix window active, select Matrix: Set Values.. menu. or Ctrl+Q
  2. Check the dilaog title to see the active matrix object name, e.g. Mat(1).
  3. Enter the following formula (mat(1)-min(mat(1)))/(max(mat(1))-min(mat(1)))
  4. Click OK.
    Normalize matrix.gif

Run LabTalk Script

You can run the following script with your matrix object active. This script normalizes the data to have a min value of 0 and max value of 1. You can modify script as needed for different normalization values. 

mat(1)=(mat(1)-min(mat(1)))/(max(mat(1))-min(mat(1))); //Normalize to be between 0 and 1 in all cells

Select Window: Script Window and paste the above script into this window. Put cursor anywhere on the line before ; and press Enter.

The following Script also works 

// Normalize to be between 0 and 1 in all cells
range rm=<active>;
sum(rm); // Get statistics
rm -= sum.min; // subtract the minimum, resulting in new minimum of zero
rm /= (sum.max - sum.min); // divide by range, new maximum of one

Keywords:script, transform, scale, value, calculation