Storing a variable and calling it out again to use and plot

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Ellie Matlab
Ellie Matlab 2022-6-28
回答： vidyesh 2024-11-20，10:15
From what i understand in this question, I need to store the current temperature,T of the following into a new variable T_old and update each value of T accordingly. But when i plotted it out there is an aerror. Also i cannot seem to store the T into T-old and calling it out to use. This is my codes for the first part.
x =-0.8:0.8:5;
dt=1000;
T=ones(1,5); T(1,5)=40;
figure
plot(x,T)
title('Temperature distribution between x=0 and x=0.8 ')
xlabel('x')
ylabel('Temperature')
hold on;
T=T_old

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回答（1 个）

vidyesh
vidyesh 2024-11-20，10:15
Hi Ellie,
The reason for the error is that number of elements/values in vector 'x' and and vector 'T' are different.
Consider using 'linspace' function to define x instead.
'linspace' will allow you to generate a vector from a start to end point with the desired number of elements.
Please refer the below documentation for more details.
https://www.mathworks.com/help/matlab/ref/double.linspace.html
Hope this helps.

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