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How can I subtract every element in an array (including the first element) from the first element of the same array

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Aman Kumar
Aman Kumar 2024-3-25
评论： Aman Kumar 2024-3-25
Hi guys,
I am calculating the Bodys CoM and I need to find the Jump Height from it. To do so, I need to subtract every element in the array of the Bodys CoM from the first element of the array (which is basically like the starting point). Any ideas how I can do this? Any help would be appreciated.

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Voss
Voss 2024-3-25
Ran in:
v = 3:4:15 % an array
v = 1x4
3 7 11 15
v-v(1) % subtracting the first element from each element
ans = 1x4
0 4 8 12
v(1)-v % subtracting each element from the first element
ans = 1x4
0 -4 -8 -12
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Voss
Voss 2024-3-25
Ran in:
Because of the extra '1' in the disp call.
Body_CoM = [13 13.608 13.3];
JumpHeight = Body_CoM - Body_CoM(1);
biggestJump = max(JumpHeight)
biggestJump = 0.6080
% extra '1':
disp(['Maximum Jump height 1',num2str(biggestJump),' meters'])
Maximum Jump height 10.608 meters
% no extra '1':
disp(['Maximum Jump height ',num2str(biggestJump),' meters'])
Maximum Jump height 0.608 meters

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