| Scripting Resources for DigitalMicrograph™ |
Function: Linear Regression fit of a 2D Plane |
|
Function |
Function to carry out a linear regression to calculate the best 2D plane fit to an image. |
Version |
version:20191021, v1.0 |
Author |
D. R. G. Mitchell |
Acknowledgements |
- |
Comments |
This function will calculate the coefficients of the best fitting 2D plane to the passed in image by linear regression. The image passed in is an array of points with x and y coordinates and z intensity values. The function uses the pseudo-inverse matrix method to compute the plane of best fit according to the expression z=ax + by +c - the fit coefficients a, b and c are returned. These can be used to compute the best plane fitting an image. Substraction of this calculcated image from the original image can be used to level contrast variations. |
System Requirements |
Should be compatible with all recent versions of DigitalMicrograph. |
Known Issues |
The passed in image must be a 2D image as the pseudo-inverse matrix method will not work with 1D data. A linear regression function to fit 1D data can be found here. |
Supported |
Yes |
Included Files |
Main script file. |
Source Code |
See attached source code. |