Display only part of a plot?

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AWi
AWi on 18 Jul 2018
Commented: AWi on 18 Jul 2018
I have fitted a curve to a data set with the fit funtion, see code below. In my graph I have the data points as well as the fitted function and would like display the function only up to a certain x-value (red arrow in figure). So that the last four points are still displayed but without the function intersecting them. Is that somehow possible??
c1 =[0.1000;
0.0750;
0.0500;
0.0250;
0.0100;
0.0090;
0.0080;
0.0070;
0.0060;
0.0050;
0.0040;
0.0030;
0.0020;
0.0010;
0.0005;
0.0001;
0.00001;
0.000001;
0]
d1=[46.5000;
46.4500;
47.5500;
46.9500;
47.0500;
48.6500;
48.9000;
49.0000;
51.0000;
51.9500;
58.3000;
62.1500;
66.5500;
68.1500;
71.1000;
71.4500;
71.1500;
70.9000;
70.2000]
f1 = fit(c1, d1, 'gauss3')
plot(f1, c1, d1)

Accepted Answer

dpb
dpb on 18 Jul 2018
Yeah, but you have to evaluate the function over the range you want and use the results to do the plotting instead of the overloaded fit function-specific plot() routine--it doesn't have the option to not use the range of the data it was given for the prediction.
xhat=logspace(-6,-2); % 100 points log-spaced
yhat=f1(xhat); % evaluate at the points
semilogx(xhat,yhat,'r-',c1,d1,'b.') % plot the fit over range and all data points
  2 Comments
AWi
AWi on 18 Jul 2018
Perfect, thank you!

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