<html><head></head><body style="font-family: times new roman,new york,times,serif; font-size: 12pt;">Hi everyone<br>does anyone know of if linear regression can be used with itk. I have to calculate quadratic coefficients for a large 2048*2048 image (pixel by pixel) and found statistical packages such as R extremely slow.<br><br>thanks<br><br>Leila<br></body></html>