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I am using 'fit' command for curve fitting. But my model equation is defined only for some range of input (x>5) . For x<5, model equation is y =2 (Having no constants). So How should I deal this problem ? Thanks in Advance.

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Yugal Gupta
Yugal Gupta on 25 May 2017
Edited: John D'Errico on 25 May 2017
I am using 'fit' command for curve fitting. But my model equation is defined only for some range of input (x>5) . For x<5, model equation is y =2 (Having no constants). So How should I deal this problem ? Thanks in Advance.

Accepted Answer

John D'Errico
John D'Errico on 25 May 2017
Edited: John D'Errico on 25 May 2017
You essentially have no model to fit, when x < 5. Even if you did, who cares? We already know what y is then! You know the model below that point. Any data that falls below x=5, just ignore it. It will not be needed for the fit, so there is no problem at all.

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