Array indexing and processing

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Gilbert S
Gilbert S 2015-2-14
评论： Star Strider 2015-2-14
Hi there,
I was wondering if someone could help explain what the following line of matlab code is doing -
R = H(npt-1:-1:2);
Where H is a vector (or 1 * 513 matrix) of complex numbers.
Thanks for any tips

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Star Strider
Star Strider 2015-2-14
That line assigns to ‘R’ values of ‘H’ using index references starting at ‘npt-1’, decrementing by 1 to ‘H(2)’.
For instance:
H = [1:10];
npt = 10;
R = H(npt-1:-1:2)
‘R’ is assigned:
R =
9 8 7 6 5 4 3 2

更多回答（1 个）

Gilbert S
Gilbert S 2015-2-14
Perfect, thank you! My Matlab is rusty, so coming from a C background, things like this can slow me down..!
Thanks for your help..

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