Make a vector into a call of a function

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Nikos Karamolegkos 2015-4-13

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评论： Nikos Karamolegkos 2015-4-14

Hi, i would like to use bi2de for some elements of a vector A. If A(1)=0 A(2)=0 A(3)=1 and i call bi2de as bi2de(A(1:3)) i get the dec of each element A(1) A(2) and A(3). I would like to take the dec of bi2de([A(1) A(2) A(3)]). How can i create this vector for random number of elements in [ ] without creating the vector before for example using while-loop. thanks

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Stephen23 2015-4-13

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编辑：Stephen23 2015-4-14

在 MATLAB Online 中打开

According to your definition

A(1)=0 A(2)=0 A(3)=1

then we get

A = [0,0,1]

which means we can simply call

bi2de(A)

Whatever method you use it will have to create a vector (or matrix) before these values are passed to bi2de.

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Stephen23 2015-4-14

编辑：Stephen23 2015-4-14

在 MATLAB Online 中打开

"-bi2de(A(1)) i will take 0 -bi2de(A(2)) i will take 0 -bi2de(A(3)) i will take 1, that is exactly the same as writing bi2de(A(1:3))"

Except that these are not the same same thing, if A is a row vector. Try it. Your confusion might be happening because you have a column vector for A: is A a column vector? What do you get if you call this?:

size(A)

The vector-orientation is very important, as will be clear when you read the documentation and try some examples:

>> bi2de([0,0,1])
ans =
     4
>> bi2de([0;0;1])
ans =
     0
     0
     1

"I want to be give A(1) A(2) A(3) as one bin value the value 001"

Which is exactly how bi2de treats a horizontal vector input, in which case you can use any of my suggested solutions. If your input vector A is a column vector, then the function bi2de will treat each row as a separate value to convert, as the documentation clearly states. You can simply transpose the input vector to turn it into a horizontal vector if you want it considered as one value:

>> A = randi([0,1],12,1)
A =
     0
     0
     1
     1
     0
     0
     0
     1
     1
     1
     0
     1
>> bi2de(A(1:3)) % each row as separate value
ans =
     0
     0
     1
>> bi2de(A(1:3).') % transposed into row vector
ans =
     4