MATLAB: Generate logical vector of specific pattern of numbers

logical vector

Hi, I want to generate numbers with the following pattern: [2 3 4.75 5.75 7.5 8.5 10.25 11.25]

The format will be n+1 then n+1.75 then n+1 then n+1.75 and so on.

n starts from 2 and the calculation of n always consider the previous calculated value of n.

Please assist me.

Thanks a lot.

Best Answer

cycles = 10;
pattern = cumsum([2 repmat([1 1.75], 1, cycles)]);

Related Solutions

MATLAB: How can i find the elements of an array with in tolerance and map them to a unique number if those number are within that tolerance

This requires the image processing toolbox (for bwlabel). It also requires that A is sorted (which appears to be the case in your example). Finally, note that the following will also group together [1 2 3 4] since the difference between consecutive numbers is < 2 even the the difference between the extreme is > 2. If you don't want that then you need to explain how the numbers should be grouped in that case.

A=[0.5  1  1.75  2  5  5.25  5.75  6  6.25  9  9.25  9.5  10.25];
assert(issorted(A), 'A must be sorted');
result = diag(bwlabel(abs(A - A.') <= 2, 4)).'

edit: Actually, it can be done easily without the image processing toolbox. The same conditions still apply:

A=[0.5  1  1.75  2  5  5.25  5.75  6  6.25  9  9.25  9.5  10.25];
assert(issorted(A), 'A must be sorted');
result = cumsum([1, diff(A) > 2])

MATLAB: How to create a repeating number series

LEARN TO USE MATLAB.

0.25:.5:25
ans =
  Columns 1 through 11
         0.25         0.75         1.25         1.75         2.25         2.75         3.25         3.75         4.25         4.75         5.25
  Columns 12 through 22
         5.75         6.25         6.75         7.25         7.75         8.25         8.75         9.25         9.75        10.25        10.75
  Columns 23 through 33
        11.25        11.75        12.25        12.75        13.25        13.75        14.25        14.75        15.25        15.75        16.25
  Columns 34 through 44
        16.75        17.25        17.75        18.25        18.75        19.25        19.75        20.25        20.75        21.25        21.75
  Columns 45 through 50
        22.25        22.75        23.25        23.75        24.25        24.75

The point is, the colon operator would be nearly the first thing you would learn were you to read the getting started tutorial in MATLAB. Don't skip reading the manual.

Next, you want to repeat this. For how many days? You can count how many you need for 5 years. The simplest way to repeat a vector is to use repmat. So you might end up with this:

h = repmat(0.25:.5:25,1,5*365);

Again, repmat is one of those things you will see in the basic getting started tutorials. READ THEM, as they were put there for you to use and learn from. Otherwise, you will be asking dozens of basic questions you would have learned the answer to in just a few minutes of reading.

Best Answer

Related Solutions

MATLAB: How can i find the elements of an array with in tolerance and map them to a unique number if those number are within that tolerance

MATLAB: How to create a repeating number series

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