multiple area with different base values
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Is it possible to show multiple area in a graph with different base values ? In the following example, the base value of the first area is changing when the second one is displayed.
figure
x = linspace(0,2*pi);
y = sin(x);
plot(x,y,'linewidth',2);
hold on;
f = y>=0.9;
h(1) = area(x(f),y(f),...
'BaseValue',0.9,...
'ShowBaseLine','off',...
'FaceColor','red',...
'FaceAlpha',0.2,...
'LineStyle','none');
fprintf('basevalue: %.2f\n',h(1).BaseValue);
f = y<=-0.3;
h(2) = area(x(f),y(f),...
'BaseValue',-0.3,...
'ShowBaseLine','off',...
'FaceColor','green',...
'FaceAlpha',0.2,...
'LineStyle','none');
fprintf('basevalue: %.2f\n',h(1).BaseValue);
Thanks for the help ! (Matlab R2016b)
回答（2 个）
Manish Annappa
2017-5-19
0 个投票
I compared the graphs generated from the above code snippets posted by you. The second code snippet seems to give the expected results. Any reason why this solution is not acceptable to you?
Ullekh Gambhira
2018-6-16
0 个投票
I was facing a similar issue, solved it by using "Shade area between two curves" function by John Bockstege. The file exchange link for this function is below:
https://www.mathworks.com/matlabcentral/fileexchange/13188-shade-area-between-two-curves
It does not consider base value, but basically shades the area between two lines. So one line can be your vector and the other can be a baseline*ones(size(x)).
Hope this helps.
Regards, Ullekh
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2018-6-16
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