A problem with xtick

Hello,

I do not know but I could not figure out how to fix a problem with xticks (I hate it). I also attach the data I am using. Bellow, are a few code lines

S=load('LandauData.mat');
data=S.data;
L=-2.;R=2.2;
t=dt.*(0:length(data)-1);

Unrecognized function or variable 'dt'.

plot(t,data,'-k');
hold on;
plot(t,0.*t+L,'--r');
plot(t,0.*t+R,'--r');
ylim([-10 11.7]);
xlabel('time');
ylabel('State, x');
title('Landau model');
yticks([-10 -6 -2 2 6 10]);
yticklabels([-10 -6 -2 2 6 10]);
xticks([1 200 400 600 800 1000]);
xticklabels({'0','200','400','600','800','1000'})

I do not know why I get the folowing error message

Index exceeds the number of array elements. Index must not exceed 6.

Thanks for your kind help in advance!

Babak

[Dyuman Joshi]

Parameter dt is not defined in your code above.

[Mohammad Shojaei Arani]

Sorry, it is 0.01

[Dyuman Joshi]

What's the problem here?

Though I'm not sure why you have labeled x=1 as 0.

S=load('LandauData.mat');
data=S.data;
L=-2.;R=2.2;
dt = 0.01;
t=dt.*(0:length(data)-1);
[a,b] = bounds(t)

a = 0

b = 999.9900

plot(t,data,'-k');
hold on;
plot(t,0.*t+L,'--r');
plot(t,0.*t+R,'--r');
ylim([-10 11.7]);
xlabel('time');
ylabel('State, x');
title('Landau model');
yticks([-10 -6 -2 2 6 10]);
yticklabels([-10 -6 -2 2 6 10]);
xticks([1 200 400 600 800 1000]);
xticklabels({'0','200','400','600','800','1000'})

[Mohammad Shojaei Arani]

Hello Dyuman Joshi,

So, you did not detect any problem.

But, I could fix it after pressing clear. I do not know, perhaps something was interfering with my code lines. But, now it

works.

[Mohammad Shojaei Arani]

BTW, I cannot accept your answer here (I could not find any botton about it)

Answer 1

[Chunru]

It works here without problem.

S=load(websave("LandauData.mat", "https://www.mathworks.com/matlabcentral/answers/uploaded_files/1551452/LandauData.mat"));
data=S.data;
L=-2.;R=2.2;
dt = 0.01;
t=dt.*(0:length(data)-1);

plot(t,data,'-k');
hold on;
plot(t,0.*t+L,'--r');
plot(t,0.*t+R,'--r');
ylim([-10 11.7]);
xlabel('time');
ylabel('State, x');
title('Landau model');
yticks([-10 -6 -2 2 6 10]);
yticklabels([-10 -6 -2 2 6 10]);
xticks([1 200 400 600 800 1000]);
xticklabels({'0','200','400','600','800','1000'})

[Mohammad Shojaei Arani]

Thanks Chunru!