Graph Non-linearity Calculation

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thavamaran

Joined Feb 21, 2008
67
Hi guys, im currently undergoing process of my final engineering project. so im analyzing my sensor via graph. so i have attach two graph image whereby i need to compare the actual output which is in blue line and red line is the actual linearity graph which how it suppose to be. so now i need to find the drifting percentage between the actual graph and the linearity graph. i need idea how to do it, can anyone guide me through please. thank you.

in second graph i have pointed out the drifted point from linearity form. please guide me through.
 

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studiot

Joined Nov 9, 2007
4,998
Look at you maths notes (statistics section), or google, or ask your tutor about,

'least squares analysis'
'regression line analysis'
 

Papabravo

Joined Feb 24, 2006
21,158
Check out the freeware package called `R'. It is specifically designed for doing this kind of statistical analysis. It does take an investment of time to become proficient in using it however. Once you do the gain in productivity is immense.

http://www.r-project.org/
 
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