Sort a vector in matlab
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Somebody can help me? From the routine in Matlab I get a vector whose length can be a number between 0 and 24. The content of this vector are numbers between 0 and 24. However, I have to sort this vector with the next conditions
1. The content must be equal to index of the sorted vector. 2. If in the content of the vector, a number doesn't exist must be equal to NaN
For example
Index Content
- 1 10
- 2 11
- 3 12
- 4 15
- 5 16
- 6 17
- 7 18
- 8 19
- 9 20
- 10 22
- 11 24
In the left side is index vector and in right side the content The sorted vector that I hope to get is:
- 1 2
- 2 2
- 3 3
- 4 4
- 5 5
- 6 6
- 7 7
- 8 8
- 9 9
- 10 10
- 11 11
- 12 12
- 13 13
- 14 14
- 15 15
- 16 16
- 17 17
- 18 18
- 19 19
- 20 20
- 21 21
- 22 22
- 23 23
- 24 24
Thank for your help!
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the cyclist
2015년 8월 27일
편집: the cyclist
2015년 8월 27일
I don't understand the rule you are trying to explain, or your example. Can you use actual MATLAB commands to define your input/output, such as
x = [1 10; 2 11; etc]
y = [1 2; 2 2; 3 3; etc]
and give another example or two of input/output?
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Stephen23
2015년 8월 27일
편집: Stephen23
2015년 8월 27일
For clarity I have not included the indices, but these are simple to include if required.
>> inp = [10;11;12;15;16;17;18;19;20;22;24];
>> out = nan(24,1);
>> out(inp) = inp
out =
NaN
NaN
NaN
NaN
NaN
NaN
NaN
NaN
NaN
10
11
12
NaN
NaN
15
16
17
18
19
20
NaN
22
NaN
24
Note that I assumed that the minimum value is one, as this is what the example values show (and which contradict the OP's original question which states a minimum value of zero).
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Stephen23
2015년 8월 28일
편집: Stephen23
2015년 8월 28일
If you have another vector of values vec with the same number of elements as inp, then you can use much the same indexing as in the answers I gave you:
>> inp = [0;10;11;12;15;16;17;18;19;20;22;24];
>> vec = [0,01,11,21,51,61,71,81,90,02,22,42];
>> out = nan(25,2);
>> out(inp+1,1) = inp;
>> out(inp+1,2) = vec
out =
0 0
NaN NaN
NaN NaN
NaN NaN
NaN NaN
NaN NaN
NaN NaN
NaN NaN
NaN NaN
NaN NaN
10 1
11 11
12 21
NaN NaN
NaN NaN
15 51
16 61
17 71
18 81
19 90
20 2
NaN NaN
22 22
NaN NaN
24 42
You can learn how these basic commands work by doing MATLAB's introductory tutorials:
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