How to plot a 2D graph using for loop values?

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sha
sha 2015-6-3
评论： Image Analyst 2018-2-20
Hello, Could anyone tell me what the problem is in the following code?
Many thanks.
% code:
lambda= [1.5:0.005:1.6];
llambda=length(lambda);
for di=1:llambda
k(di)=2*3.14/lambda(di)
end
lambda= [1.5:0.005:1.6];
plot(lambda,k);
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Joseph Cheng
Joseph Cheng 2015-6-3
I am trying. The main question is why is the plot in your sample code not what you're trying to get. If it is then what is the question or is the question to plot within the for loop?
sha
sha 2015-6-3
编辑：sha 2015-6-3
If I run the code, the following errors appear:
Error using plot Vectors must be the same lengths.
Error in Untitled7 (line 7) plot(lambda,k);
How to fix this error?

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采纳的回答

sha
sha 2015-6-3
Thanks, Cheng. I would like to plot the same thing, however. using for loop. Just curious how to plot the data using for loop? Could you help?

更多回答（2 个）

Image Analyst
Image Analyst 2015-6-3
The code works fine:
lambda= [1.5:0.005:1.6];
llambda = length(lambda);
for di = 1 : llambda
k(di) = 2 * 3.14 / lambda(di)
end
plot(lambda,k);
It plots with absolutely no warnings or errors about different lengths. What is the actual code you ran (it's not that , that's for sure)?
jyoti mishra
jyoti mishra 2018-2-20
how to plot a vector and its delayed version in matlab?

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