Fitting a straight line to a loglog plot data set and finding an arbitrary intercept value.
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Hi Guys....
I'm struggling to find a way to fit a straightline to my dataset which is displayed on logarithmic axes.
I have a very sparce amount of data but they generally follow a pattern:
As you can see, above the data is displayed on loglog axes
loglog(x,y)
Without going into too much unnecessary detail. I wish to fit a straight line to the data in order to find the x values when the fitted lines intercept with the blue lines (Wi*=0.002). An example is shown below:
I have tried using the polyfit command but to no avail. Any help on this problem would be much appreciated.
Many thanks,
Nath
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2015-8-25
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