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How to flip the data upside down without flipping the axes?

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Kofial
Kofial on 18 Jan 2021
Commented: dpb on 18 Jan 2021
x = [1 2 3];
y= [6 13 11];
plot(x,y)
set(gca,'Ydir','reverse')
I tried this code but it flips the y axis. I want to keep both axis the same.

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dpb
dpb on 18 Jan 2021
Indeed.
One could use
plot(x,-y)
but will, of course put them below the y==0 axis.
Alternatively, there's
plot(x,y)
hold on
plot(x,19-y,'r-*')
Kofial
Kofial on 18 Jan 2021
There is no picture, only a line like the one provided.
This plot(x,-y) doesn't work plot(x,-y) because it converts the y axis in negative values.
This second option either. I don't want to do any changes to the axis, only flip the data.
dpb
dpb on 18 Jan 2021
Remove the -y from the second; that was a figment of the copy/paste...it's the same idea that Star-S shows.

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Accepted Answer

Star Strider
Star Strider on 18 Jan 2021
I am not certain what result you want.
Try this:
x = [1 2 3];
y = [6 13 11];
figure
plot(x,max(y)-y+min(y))
.

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