Shade area under a plot with MATLAB

Question

Gianmarco Broilo 2021-11-17

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1589124-shade-area-under-a-plot-with-matlab

回答： DGM 2021-11-18

I am trying to shade the area under a curve on MATLAB, this is the code I have:

The problem is that is shading only the negative part of the graph, not its symmetric positive part..

plot(Navg(2:end),closestapproach(2:end)./1e3-2634,'k')
hold on
plot(serrN_2000,closestapproach(2:end)./1e3-2634,'b');
hold on
plot(-serrN_2000,closestapproach(2:end)./1e3-2634,'b');
hold on
plot(B,closestapproach(2:end)./1e3-2634,'r');
hold on
plot(-B,closestapproach(2:end)./1e3-2634,'r');
shade(B,closestapproach(2:end)./1e3-2634,'r')
hold on
shade(serrN_2000,closestapproach(2:end)./1e3-2634,'b')
hold on
shade(-B,closestapproach(2:end)./1e3-2634,'r')
hold on
shade(-serrN_2000,closestapproach(2:end)./1e3-2634,'b')
title('Vertical electron density profile and uncertainty')
ylabel('Altitude [km]')
xlabel('Electron density [cm-3]')
xline(0)
legend('Average profile','1*\sigma','3*\sigma')