Aligning 2 Signals as a function of third signal

I have two signals which are from the same data, at same data logging frequency, source and need to be aligned. Say Temperature 1 and Temperature 2.

Temperature 1 and Temperature2 are logging gas temperature at different locations. As the gas flow will change, the lag between the two measurement devices will change.

I am trying to get help with a transfer function such that

Temperature2(ii) = Temperature1(ii + b*gas flow) so this will dynamically shift the indicies of variable Temperature1 according to the gas flow.

When flow is above a certain threshold, coefficienct b will be a low value while when flow is low, b will be a larger number showing the transport delay

Note: I am using temperature for as an example for the signals.

Answer 1

[Star Strider]

I am not certain what you want to do.

See if the alignsignals function will do what you want. Another option may be findsignal.

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[Shekhar Vats]

already tried and it didn't work.

I will edit to question to add more clarity. Thanks for the feedback

[Star Strider]

This:

Temperature2 = Temperature1(a + b*gas flow)

would appear to be a simple linear regression, although a multiple linear regression or nonlinear regression might be more appropriate.

For a simple linear regression, the polyfit and polyval functions could do what you want.

It would help to have a representative sample of the signals, and a description or illustration of the desired result.

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[Shekhar Vats]

let me try mlr and nlr and will update you.

thank you.

[Star Strider]

My pleasure!

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[Shekhar Vats]

so, i finally decided to use the advection equationand it solved the problem for the transport delay.

you answer was inline with my question so i am accepting the answer.

thank you for the help.

[Star Strider]

Thank you!

As always, my pleasure!

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