density meaning and when we should use it
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Hajar Alshaikh
on 2 Mar 2023
Commented: Rik
on 2 Mar 2023
what do you mean by :
for density=.2:.01:.2
and what is the benifit of using the desity in matlab code (when we should use it)?
if you can give me a simple example, i will be appreciate it
Also, what is A(1:n+1:end) means?
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Rik
on 2 Mar 2023
If you have trouble with Matlab basics you may consider doing the Onramp tutorial (which is provided for free by Mathworks).
Accepted Answer
Sivapriya Srinivasan
on 2 Mar 2023
Hey Hajar,
- For density=.2:0.01:.2 means it creates a vector of numbers ranging from 0.2 to 0.2 with an increment of 0.01. However, since the start and end are the same it represents a scalar value 0.2 .
- Density is not any particular command in MATLAB it is just a variable which we have used, it can be replaced with any other variable name
- The expression A(1: n+1: end) is used to extract elements from a matrix ‘A’. This results in a sequence of indices that start at the first element of the first row and then skips n+1 elements to select the next element along the diagonal of the matrix, this continues until the last element of the last row is reached.
Hope this helps!
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