how can i split mtrix to three ?

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RADWAN A F ZEYADI
RADWAN A F ZEYADI 2022-1-16
评论： Image Analyst 2022-1-19
hi
i have matrix m=153*71 i need to extract from it 3 matrices with dinsion 51*71 ?

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回答（3 个）

Voss
Voss 2022-1-16
编辑：Voss 2022-1-16
Here is one possible way, if A is your matrix:
A1 = A(1:51,:);
A2 = A(52:102,:);
A3 = A(103:153,:);
Image Analyst
Image Analyst 2022-1-16
  2 个评论
RADWAN A F ZEYADI
RADWAN A F ZEYADI 2022-1-19
thank you ,,i have matrix m 153 71
i need to exrtact 51 71 from m
when i do i obtain the same picture of the first matrix for example
m1=m(1:51,:);
m2=m(52:103,:)
m3=m(103:153,:)
i have obtained m3 and m2 the same pictures with m1 infact in the m matrix they are totlay differentmage from m1 infact on the whole matrix they are different
Image Analyst
Image Analyst 2022-1-19
Ran in:
Sorry that's not true. Look:
m = randi(99, 153, 5)
m = 153×5
72 2 19 99 1 46 35 44 11 85 11 25 58 1 45 69 11 81 94 35 42 9 20 54 31 76 96 69 66 64 9 14 63 52 62 96 31 10 95 36 68 72 93 3 98 30 97 65 97 99
m1=m(1:51,:)
m1 = 51×5
72 2 19 99 1 46 35 44 11 85 11 25 58 1 45 69 11 81 94 35 42 9 20 54 31 76 96 69 66 64 9 14 63 52 62 96 31 10 95 36 68 72 93 3 98 30 97 65 97 99
m2=m(52:103,:)
m2 = 52×5
19 8 41 41 39 91 16 7 58 51 78 10 94 82 5 93 65 95 71 67 4 60 78 28 61 75 91 41 55 28 68 5 20 92 6 70 52 43 73 24 73 87 83 1 41 47 99 85 63 98
m3=m(103:153,:)
m3 = 51×5
75 19 89 71 42 64 78 10 92 38 44 48 93 10 91 94 32 26 37 67 90 68 92 47 93 38 28 16 3 54 5 40 2 4 92 50 2 76 82 30 68 62 20 15 93 26 53 43 36 30
You can see that obviously they are not the same. You must have done something else to overwrite all the matrices with m.

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RADWAN A F ZEYADI
RADWAN A F ZEYADI 2022-1-19
thank you just the last thing i have 2 vectors and i want to compute the Confidence intervals 95"% for both of them how could be done ?
both of them 51*1 i upload the picture to check the figure
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RADWAN A F ZEYADI
RADWAN A F ZEYADI 2022-1-19
i have exracted them from 2 matrixes 51*71 for both
Image Analyst
Image Analyst 2022-1-19
So you have either 51 or 71 curves? If so, for each time point you can pass those values into fitdist() to get the distribution and CDF from which you can get the 2.5% and 97.5% values of the CDF which enclose 95% of the values.
If you can't figure it out, attach the matrix in a .mat file.

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