How to stop the program and store the scalar variable and rerun the program and plot scalar against scalar
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Hi, I want to plot scalar value (t) against scalar (alpha). But it does not plot.
Simplified code is below:
da = 0.1
for i=1:31;
alpha = (1-1)*da
...
for nt=1:30001;
t=t+dt
...
if (gap2 < 10^(-8)) |(gap2 < 10^(-8))
plot (t,alpha)
break
end
end
Thanks
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rantunes
2015-3-4
1 个投票
Hey,
As I can understand from your code, you have alpha = 0, no?
And another thing is that you want to plot each point at each iteration, right? You should try to use the "hold on" command, for the plot function "overwrite" in the first opened plot the next points. Maybe you should save the points in vectors, and plot it outside the external cycle for.
Greets
5 个评论
rantunes
2015-3-4
da = 0.1;
alpha(1) = 0;
t(1) = 0;
for i=1:31;
alpha = (1-1)*da
...
for nt=1:30001;
t(i+1) = t(i) + dt
...
if (gap2 < 10^(-8)) |(gap2 < 10^(-8))
break
end
end
end
plot (t,alpha)
You just have to define the first the elements of alpha and t to zero, as I show here. Than at each iteration you save the newvalues. The points are afterwards plotted and the external for is finished.
I don't understand your code, maybe because there are hidden parts, but alpha is still 0...
rantunes
2015-3-4
*"The points are afterwards plotted when the external for is finished"
Pay attention to your for-end pairs
Meva
2015-3-4
rantunes
2015-3-4
Okay, I understand what do you mean about the plotting, but in any case you have to use "hold on".
In any case, I still don't know how alpha, alpha = (1 - 1)*da, should increase at each iteration.
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