Linear model with one known coordinate
I have a set of points (measurements) and I used lm() to obtain their linear regression model. From the biological background this line must pass through a point (100,0). Our dataset is not optimal and it shows a slight deviation from that coordinate. How can I add the restraint to the model, to go through that point?
You can do that with offset(). There is an example in the manual page for glm. cu Philipp
Dr. Philipp Pagel Lehrstuhl f?r Genomorientierte Bioinformatik Technische Universit?t M?nchen Wissenschaftszentrum Weihenstephan 85350 Freising, Germany http://mips.gsf.de/staff/pagel