Average of a repeating array

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Topperanium
Topperanium 2024-5-7
编辑： sai charan sampara 2024-5-7
Hi,
I've got an output vector from simulink that has dimensions of 25560x1. There are 100 individual cycles within this data and I am trying to get an average of all of them. I am using the attached code to isolate each 256 cycle element, add it together, and then divide to achieve the average. However, I keep getting an error about exceeding array elements. Is there a better way to "squash" this 25560 array into a 256 array with the data being averaged? Thank you.
Bat10Count = round(25560/100);
for x = 1:Bat10Count
TotalBatteryP10_293(x)=(BatteryS10_293(x)+BatteryS10_293(Bat10Count+x)+BatteryS10_293(2*Bat10Count+x)+BatteryS10_293(3*Bat10Count+x)+BatteryS10_293(4*Bat10Count+x)+BatteryS10_293(5*Bat10Count+x)+BatteryS10_293(6*Bat10Count+x)+BatteryS10_293(7*Bat10Count+x)+BatteryS10_293(8*Bat10Count+x)+BatteryS10_293(9*Bat10Count+x)+ BatteryS10_293(10*Bat10Count+x)+BatteryS10_293(11*Bat10Count+x)+BatteryS10_293(12*Bat10Count+x)+BatteryS10_293(13*Bat10Count+x)+BatteryS10_293(14*Bat10Count+x)+BatteryS10_293(15*Bat10Count+x)+BatteryS10_293(16*Bat10Count+x)+BatteryS10_293(17*Bat10Count+x)+BatteryS10_293(18*Bat10Count+x)+BatteryS10_293(19*Bat10Count+x)+BatteryS10_293(20*Bat10Count+x)+BatteryS10_293(21*Bat10Count+x)+BatteryS10_293(22*Bat10Count+x)+BatteryS10_293(23*Bat10Count+x)+BatteryS10_293(24*Bat10Count+x)+BatteryS10_293(25*Bat10Count+x)+BatteryS10_293(26*Bat10Count+x)+BatteryS10_293(27*Bat10Count+x)+BatteryS10_293(28*Bat10Count+x)+BatteryS10_293(29*Bat10Count+x)+BatteryS10_293(30*Bat10Count+x)+BatteryS10_293(31*Bat10Count+x)+BatteryS10_293(32*Bat10Count+x)+BatteryS10_293(33*Bat10Count+x)+BatteryS10_293(34*Bat10Count+x)+BatteryS10_293(35*Bat10Count+x)+BatteryS10_293(36*Bat10Count+x)+BatteryS10_293(37*Bat10Count+x)+BatteryS10_293(38*Bat10Count+x)+BatteryS10_293(39*Bat10Count+x)+BatteryS10_293(40*Bat10Count+x)+BatteryS10_293(41*Bat10Count+x)+BatteryS10_293(42*Bat10Count+x)+BatteryS10_293(43*Bat10Count+x)+BatteryS10_293(44*Bat10Count+x)+BatteryS10_293(45*Bat10Count+x)+BatteryS10_293(46*Bat10Count+x)+BatteryS10_293(47*Bat10Count+x)+BatteryS10_293(48*Bat10Count+x)+BatteryS10_293(49*Bat10Count+x)+BatteryS10_293(50*Bat10Count+x)+BatteryS10_293(51*Bat10Count+x)+BatteryS10_293(52*Bat10Count+x)+BatteryS10_293(53*Bat10Count+x)+BatteryS10_293(54*Bat10Count+x)+BatteryS10_293(55*Bat10Count+x)+BatteryS10_293(56*Bat10Count+x)+BatteryS10_293(57*Bat10Count+x)+BatteryS10_293(58*Bat10Count+x)+BatteryS10_293(59*Bat10Count+x)+BatteryS10_293(60*Bat10Count+x)+BatteryS10_293(61*Bat10Count+x)+BatteryS10_293(62*Bat10Count+x)+BatteryS10_293(63*Bat10Count+x)+BatteryS10_293(64*Bat10Count+x)+BatteryS10_293(65*Bat10Count+x)+BatteryS10_293(66*Bat10Count+x)+BatteryS10_293(67*Bat10Count+x)+BatteryS10_293(68*Bat10Count+x)+BatteryS10_293(69*Bat10Count+x)+BatteryS10_293(70*Bat10Count+x)+BatteryS10_293(71*Bat10Count+x)+BatteryS10_293(72*Bat10Count+x)+BatteryS10_293(73*Bat10Count+x)+BatteryS10_293(74*Bat10Count+x)+BatteryS10_293(75*Bat10Count+x)+BatteryS10_293(76*Bat10Count+x)+BatteryS10_293(77*Bat10Count+x)+BatteryS10_293(78*Bat10Count+x)+BatteryS10_293(79*Bat10Count+x)+BatteryS10_293(80*Bat10Count+x)+BatteryS10_293(81*Bat10Count+x)+BatteryS10_293(82*Bat10Count+x)+BatteryS10_293(83*Bat10Count+x)+BatteryS10_293(84*Bat10Count+x)+BatteryS10_293(85*Bat10Count+x)+BatteryS10_293(86*Bat10Count+x)+BatteryS10_293(87*Bat10Count+x)+BatteryS10_293(88*Bat10Count+x)+BatteryS10_293(89*Bat10Count+x)+BatteryS10_293(90*Bat10Count+x)+BatteryS10_293(91*Bat10Count+x)+BatteryS10_293(92*Bat10Count+x)+BatteryS10_293(93*Bat10Count+x)+BatteryS10_293(94*Bat10Count+x)+BatteryS10_293(95*Bat10Count+x)+BatteryS10_293(96*Bat10Count+x)+BatteryS10_293(97*Bat10Count+x)+BatteryS10_293(98*Bat10Count+x)+BatteryS10_293(99*Bat10Count+x))/100;
end

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回答（1 个）

sai charan sampara
编辑：sai charan sampara 2024-5-7
Ran in:
Hello,
You can pad some zeros at the end to make the array size divisible by 100 and then use the "reshape" command to divide into sets of 100 cycles. Then you can use the "mean" function to take the average over each cycle.
Here is an example code showing the same:
M=1:260 % Random array for testing
M = 1x260
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
<mw-icon class=""></mw-icon>
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M=[M,zeros(1,40)] % Pad zeros at the end to make it a multiple of 100
M = 1x300
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
<mw-icon class=""></mw-icon>
<mw-icon class=""></mw-icon>
M=reshape(M,100,[]); % Reshape into a matrix with 100 rows
M_avg=mean(M,1) % Take mean along each column
M_avg = 1x3
50.5000 150.5000 138.3000
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You can refer to these links for more information:

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