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vertical line on x axis

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Raushan
Raushan 2023-11-1
编辑： Voss 2023-11-1
subplot(1,3,2)
plot(a1,x1, 'black', a1, y1, 'r', a1,z1, 'b',LineWidth=5);
title('Consumption level, T=10')
xticks([0 1 2 3 4 5 6 7 8 9])
xticklabels({'0' '1' '2' '\color{red}S^*' '4' '5' '6' '7' '8' '9'})
ylim([60,90])
How can I add vertical line at the level s* from 0 to the black line?
Thank you,

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采纳的回答

Voss
Voss 2023-11-1
x = 3;
y = interp1(a1,x1,x);
line([x,x],[0,y])
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Raushan
Raushan 2023-11-1
thank you, it doesn't work, i don't have infinite one
Sam Chak
Sam Chak 2023-11-1
Ran in:
Hi @Raushan,
All you have to do is to provide the data for a1 and x1. We will figure out what the issue is.
If both a1 and x1 are in the Workspace, then save them to a MAT-file, using this syntax
save('RaushanData', 'a1', 'x1')
Once completed, attach the MAT-file (RaushanData.mat) using the paperclip icon .
By the way, both approaches by @Voss and @Star Strider work when the all elements in the data are finite.
a1 = 0:9; % hypothetical data
a1e = [min(a1) max(a1)] % extrema of a1
a1e = 1×2
0 9
x1 = linspace(8, 78, numel(a1)); % hypothetical data
x1e = [min(x1) max(x1)] % extrema of x1
x1e = 1×2
8 78
xq = 3; % from S* mark (query point)
yq = interp1(a1e, x1e, xq); % interpolate
% Plot data (black line)
plot(a1, x1, 'black', LineWidth=5);
xticks([0 1 2 3 4 5 6 7 8 9])
xticklabels({'0' '1' '2' '\color{red}S^*' '4' '5' '6' '7' '8' '9'})
hold on
% Plot vertical line (red)
plt = line([xq, xq], [0, yq]); % primitive line drawing
plt.LineWidth = 5;
hold off
title('Consumption level, T=10')

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