how to select specific values in a matrix
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Hi I will give an example, I have a 10X10 matrix, I want to select the 4th value in the first row, the 7th value in the 4th row and value 5 onwards on the 3rd row, and selecting multiple values from different rows. If anyone can help me. Thanks
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Image Analyst
2013-11-23
Here is what Shani asked, so that it will still be here when she deletes this question:
Hi I will give an example, I have a 10X10 matrix, I want to select the 4th value in the first row, the 7th value in the 4th row and value 5 onwards on the 3rd row, and selecting multiple values from different rows. If anyone can help me. Thanks
采纳的回答
Doug Hull
2013-11-18
>> a = magic(10)
a =
92 99 1 8 15 67 74 51 58 40
98 80 7 14 16 73 55 57 64 41
4 81 88 20 22 54 56 63 70 47
85 87 19 21 3 60 62 69 71 28
86 93 25 2 9 61 68 75 52 34
17 24 76 83 90 42 49 26 33 65
23 5 82 89 91 48 30 32 39 66
79 6 13 95 97 29 31 38 45 72
10 12 94 96 78 35 37 44 46 53
11 18 100 77 84 36 43 50 27 59
>> a(1,4)
ans =
8
>> a(4,7)
ans =
62
>> a(3,5:end)
ans =
22 54 56 63 70 47
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