Make process stationary - clean trend

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Christoph Meier
Christoph Meier 2015-8-7
回答： Ghada Saleh 2015-8-10
Dear MATLAB community,
I have produced an index, which looks as follows:
I was much more hoping to get something like this:
Does anyone know a technique to clean this exponential trend to get a proper stationary process.
Thank you very much for your time & help!
Chris

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回答（1 个）

Ghada Saleh
Ghada Saleh 2015-8-10
Hi christoph,
You can use 'semilogy' to scale the 'y' axis and plot only the exponent. However this does not change the process itself. If the process is not stationary, scaling the 'y' axis will not make the process stationary.
I hope this helps,
Ghada

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