通过以其他颜色绘制来突出显示绘图的一部分 [英] Highlight a part of a plot by drawing it in a different color

问题描述

给出一个情节，例如如下图所示的曲线，我想突出显示间隔为150< = x< = 200的曲线.我宁愿简单地以红色而不是蓝色绘制此间隔.

Given a plot with e.g. a curve like shown on the following figure I want to highlight the curve in the interval 150 <= x <= 200. I would prefer simply drawing this interval in red instead of blue.

是否有比将曲线分成3组/3个连接曲线零件更好的方法? (3个间隔，第一个间隔为蓝色，第二个间隔为红色，第三个间隔为蓝色).感谢您提供任何提示！

Is there a better way to do this than splitting my curve in 3 sets / 3 connecting curve parts? (3 intervals, first one for blue, sencond one for red, third one again for blue). Thanks for any hint!

推荐答案

一个简单的例子:

%# plot data
x = linspace(0,2*pi,75);
y = sin(x);
plot(x, y, 'b.')

%# higlight points of interest
idx = (4 <= x & x <= 6);
hold on, plot(x(idx), y(idx), 'r.')
hold off

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