Write points at x axis Ploteditor

2021 6 28
1 个回答
回答已采纳
更新时间：2021 6 28
2 次查看（30 天）

0 个投票

Hello everyone,
does someone know how to write the value of the points in the x-axis? in my case, I got different periods and I want to write them in the X-axis,
the first one 0.5pi, second 1 pi, ..., the last one 8pi.
I'm thankful for every idea!

请先登录，再回答此问题。

 采纳的回答

Scott MacKenzie
Scott MacKenzie 2021-6-28
编辑：Scott MacKenzie 2021-6-28

0 个投票

If you want text labels with greek symbols, set the x ticks and x tick labels for the axis. Here's the general idea:
x = 0:0.5*pi:2*pi;
y = sin(x);
plot(x,y)
labels = {'0' '{\pi}/2' '{\pi}' '3{\pi}/2' '2{\pi}' };
set(gca,'xtick', x, 'xticklabels', labels);

3 个评论
显示 1更早的评论 隐藏 1更早的评论

Bruce Rogers
Bruce Rogers 2021-6-28
编辑：Bruce Rogers 2021-6-28
Hello Scott,
this is exactly how I want the plot to look like, but it doesn't work on mine. Here's a part of the code:
p = zeros(1,5);
for i = 1:length(p)
p(1,i) = 0.25*2*pi;
p(2,i) = 0.5*2*pi;
p(3,i) = 1.0*2*pi;
p(4,i) = 2.0*2*pi;
p(5,i) = 4.0*2*pi;
end
figure(6)
plot(p,delta_s,'-o')
title('Grün: 0.2, Lila: 0.1, Gelb: 0.05, Rot: 0.025, Blau: 0.01')
labels = {'0' '{\pi}/2' '{\pi}' '3{\pi}/2' '2{\pi}' '5{\pi}/2' '3{\pi}' '7{\pi}/2' '4{\pi}' '9{\pi}/2' '5{\pi}' '11{\pi}/2' '6{\pi}' '13{\pi}/2' '7{\pi}' '15{\pi}/2' '8{\pi}'};
set(gca,'xtick', p, 'xticklabels', labels);
xlabel('Periodendauer')
ylabel('Differenz der Periodenmaxima')
legend('Blau: 100Hz','Rot: 40Hz','Gelb: 20Hz','Lila: 10Hz','Grün: 5Hz')
And that's the error message:
Error using matlab.graphics.axis.Axes/set
Value must be a numeric vector whose values increase.
Error in Einfluss_Abtastrate (line 622)
set(gca,'xtick', p, 'xticklabels', labels);
Scott MacKenzie
Scott MacKenzie 2021-6-28
Some minor tweaks...
n = 5;
p = zeros(1,n);
for i = 1:length(p)
p(1,i) = 0.25*2*pi;
p(2,i) = 0.5*2*pi;
p(3,i) = 1.0*2*pi;
p(4,i) = 2.0*2*pi;
p(5,i) = 4.0*2*pi;
end
delta_s = rand(1,5); % data added to avoid crash (change, as necessary)
figure(6)
plot(p,delta_s,'-o')
title('Grün: 0.2, Lila: 0.1, Gelb: 0.05, Rot: 0.025, Blau: 0.01')
labels = {'0' '{\pi}/2' '{\pi}' '3{\pi}/2' '2{\pi}' '5{\pi}/2' '3{\pi}' '7{\pi}/2' '4{\pi}' '9{\pi}/2' '5{\pi}' '11{\pi}/2' '6{\pi}' '13{\pi}/2' '7{\pi}' '15{\pi}/2' '8{\pi}'};
set(gca,'xtick', p(:,1), 'xticklabels', labels);
xlabel('Periodendauer');
ylabel('Differenz der Periodenmaxima');
legend('Blau: 100Hz','Rot: 40Hz','Gelb: 20Hz','Lila: 10Hz','Grün: 5Hz', ...
'location', 'southeast');
Bruce Rogers
Bruce Rogers 2021-6-28
Thanks for your help, thats perfect! :)

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Labels and Annotations 的更多信息

产品

版本

R2020b

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by