Plot with background colors depending on the y values

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Louis TERRATS
Louis TERRATS 2017-10-12
评论： Louis TERRATS 2017-10-12
This is my data
data = [1 2 3 4 5 6 7 8 9 10 ; 0.2 0.5 0.1 0.02 0.04 3 6 7 0.01 0.05];
In fact, I have a similar data frame but with a large amount of values (it is about 25 000 rows and 2 columns (x and y))
And I want to obtain this graph in which the background color depends on the yvalue (here : blue for yvalue < 1 and brown for yvalue > 1)
Thanks for help !

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回答（1 个）

KSSV
KSSV 2017-10-12
data = [1 2 3 4 5 6 7 8 9 10 ; 0.2 0.5 0.1 0.02 0.04 3 6 7 0.01 0.05];
x = data(1,:) ; y = data(2,:) ;
[X,Y] = meshgrid(x,y) ;
pcolor(X,Y,Y) ; shading interp
hold on
plot(x,y,'b')
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Louis TERRATS
Louis TERRATS 2017-10-12
I got it ! But I used bar() (to create histogram) instead of patch() or pcolor()

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