shade area between graphs

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Michiel on 28 Feb 2015
Commented: Image Analyst on 17 Jun 2022
I want to shade the area between these graphs
but this certainly does not do the trick:
fill([t t(end:-1:1)],[y1 y2(end:-1:1)],'y')
I also downloaded and tried "jblill"
but that did not seem to amend the outcome so far
Image Analyst
Image Analyst on 15 Dec 2017
Yes, there were answers below, one of which he accepted though both should work.

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Accepted Answer

Image Analyst
Image Analyst on 28 Feb 2015
Try using fill() instead of area():
x = 1 : 300;
curve1 = log(x);
curve2 = 2*log(x);
plot(x, curve1, 'r', 'LineWidth', 2);
hold on;
plot(x, curve2, 'b', 'LineWidth', 2);
x2 = [x, fliplr(x)];
inBetween = [curve1, fliplr(curve2)];
fill(x2, inBetween, 'g');
Image Analyst
Image Analyst on 17 Jun 2022
@MadjeKoe simply don't call plot() and only call fill().

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More Answers (3)

Star Strider
Star Strider on 28 Feb 2015
Edited: Star Strider on 28 Feb 2015
Try this:
x = linspace(0,10*pi);
y1 = sin(x);
y2 = cos(x);
plot(x, y1)
hold on
plot(x, y2)
patch([x fliplr(x)], [y1 fliplr(y2)], 'g')
hold off
Experiment with your data to get the result you want.
Yash Mistry
Yash Mistry on 20 Jul 2021
how can I avoid that?

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Javier Montalt Tordera
Javier Montalt Tordera on 12 Apr 2019
This can be simplified using the function shade (in MATLAB File Exchange).
The syntax for the above problem would be:
shade(t,y1,t,y2,'FillType',[1 2;2 1]);
The FillType option specifies that the area between lines 1 and 2 should be filled, whether 1 is above 2 or the other way round.
Giacomo Giuliani
Giacomo Giuliani on 19 May 2022
Edited: Giacomo Giuliani on 19 May 2022
It came to my minds one second after I posted. It works! Thanks.

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I am using this last suggestion by Star Strider to plot error bar shading using patch, but in some cases I get in addition to the shading straight lines (see the third plot at the bottom in the attached figure) I have eliminated the points with NaNs. It seems ok in the other two cases (the upper plots in the same figure). What can be causing this?

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