Not able to get count of each elements in array itself

I am having this array..x=[ 1 2 3 1 2]

Now I want to replace it with count of the corresponding elements..here x should get modified to x=[2 2 1 2 2]

By using hist(x, unique(x)) I am able to do it but it gives the count for unique elements. I want the result to have the number of elements.

please help!

Answer 1

[Gaganjyoti Baishya]

Hi Scott,

Instead of using the histc function, you can use the grouptransform function to get the count of all elements int the array.

x = [1 2 3 1 2];
x = [1 2 3 1 2]';
x = grouptransform(x,x,@numel);

x contains the required array.

[Scott Tehelson]

This is the thing I wanted. Thanks!

Answer 2

[madhan ravi]

[~, ~, c] = unique(x);
v = accumarray(c, 1);
Wanted = v(c)

[Scott Tehelson]

Thanks