For loop with decimal number matrix

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Abdulaziz Gheit
Abdulaziz Gheit 2019-3-16
评论： Star Strider 2019-3-16
Hi,
Any help with this for loop. I write a for loop and i tell it to increment by a small value, let's say 0.01. This loop is simple example of my issue. In my code I need to create big zeros soultion matrix to save my results into it.
if my loop increment is decimal number, how should I write the soultion matrix?
Thanks
NTUmax=10;
tt=100;
Soulution=zeros(tt,NTUmax);
for i=1:NTUmax %% Incrementing value should be e.g equal 0.1
NTU=(i);
dtempdt=NTU*2;
Soulution(:,i)=dtempdt;
end
  2 个评论
madhan ravi
madhan ravi 2019-3-16
Why do you need a loop? , the answer is simpler than a loop.
Abdulaziz Gheit
Abdulaziz Gheit 2019-3-16
Hi madhan ravi,
This is just an example. I have a complicated numerical code and it's not as simple as this example.
Thank you very much for your attention

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采纳的回答

Star Strider
Star Strider 2019-3-16
I am not certain what you want to do.
If you want to use ‘i’ as a subscript, it must consist only of integers greater than 0.
This example creates ‘iv’ (your ‘i’ vector in 0.1 increments, the centre value in the ‘iv’ definition), then loops through it, defining ‘NTU’ in each iteration as an element of ‘iv’:
NTUmax=10;
tt=100;
Soulution=zeros(tt,NTUmax);
iv = 1:0.1:NTUmax; %% Incrementing value should be e.g equal 0.1
for i = 1:numel(iv)
NTU = iv(i);
dtempdt=NTU*2;
Soulution(:,i)=dtempdt;
end
Experiment to get the result you want.

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