How to convert a cell array to a double array

I have computed the data in the cell as [3x1 cell] but actually i do not want this type of data all i need is to get the data in the form of [3x1 double]....I need to know is there any way to convert from cell to double array.. Any help is appreciated

Answer 1

[Azzi Abdelmalek]

v={1;2 ;3}
out=cell2mat(v)

[Hina Iqbal]

b={{{3 ;4}; {1}; {5}; {2}};{{1;2}; {2}; {2}; {4}}}

b =

    {4x1 cell}
    {4x1 cell}

and the output i required is

b =

    {4x1 double}
    {4x1 double}
i have used this but it gives me error 
bb=cell2mat(b)

[Azzi Abdelmalek]

This is not what you asked for.. You said you have a 1x3 cell array, and you didn't mention that your cell are cells of cells with different sizes

[Hina Iqbal]

Sorry i forgot to mention that... Anyways Thanks for the help i solved it myself

[Azzi Abdelmalek]

Also, you can't get

{4x1 double}

For your case it's

{5x1 double}

[Azzi Abdelmalek]

b={{{3 ;4}; {1}; {5}; {2}};{{1;2}; {2}; {2}; {4}}}
d= cellfun(@(y) cell2mat(cat(1,y{:})),b,'un',0)