Find value from column / row number

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Rifky Pramadya
Rifky Pramadya 2018-3-27
评论： Vijay Mohangekar 2020-3-19
Hi,
I've vector A = [5, 7, 8, 11, 4, 5, 7]
Now, I want to know what is value in column number 3 and 5, hoping with results 11 and 4.
Can you help me get the script
  1 个评论
Vijay Mohangekar
Vijay Mohangekar 2020-3-19
Do you mean >>A(3) and >>A(5) Note: unlike python here indexing starts with 1,2,....

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回答（2 个）

Star Strider
Star Strider 2018-3-27
In MATLAB, array indexing uses integers greater than zero, so indices corresponding to your vector elements 11 and 5 would be 4 and 6, respectively.
Bob Thompson
Bob Thompson 2018-3-27
If all you want to know is the value of a certain part of the matrix just call the index.
A(3)
A(3) = 8
You can call multiple things with indexing, and you can add logic statements to check for certain values as well if you would like.
https://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html

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