Dear All, I have two set of data column x and y. I have plotted plot (x,y). y is oscillatory. I want to shade the area above and below x axis with different colors like shown in image. Can anyone please help me. I have attached the data in excel she

Two columns of data x and y, importing and polt them. Y is oscilatory, so i want to fill the graph with different colors such that above x axis one color and below x axis, another color.

[madhan ravi]

when asking a question provide the datas first

[Manish Kumar]

Here is the data, Please help me.

Answer 1

[Stephen23]

Use area. You might need to plot the data twice to get the effect you want.

[Robert U]

Example:

x = 0:0.2:100;
y = ( x - ( 100 - x ) ).* cos(x);

yGzero = (y>0).*y;
yLzero = (y<=0).*y;

area(x,yGzero,'FaceColor','r')
hold on
area(x,yLzero,'FaceColor','black')

[Manish Kumar]

Thank you sir, its working