Query regarding the colon operator

a(:,:,3,10,6,1) =

    45   119    15.242    21.568   115.843   139.661    16.265
   255.978   923.596    78.549   102.645   679.539   833.699    81.573

   

This is the output of the program. Can something tell me what is a(:,:,3,10,6,1)

What does 3,10,6,1,indicate? I am new to matlab . Kindly help

Answer 1

[Steven Lord]

The a variable is a 6-dimensional array. The part you're showing spans all the rows (the first colon) and all the columns (the second colon) in the 3rd page (third dimension), 10th "book" (fourth dimension), 6th "bookshelf" (fifth dimension), and 1st "library" (sixth dimension) of the array. The terms row, columns, and pages for the first three dimensions are standard; "book", "bookshelf", and "library" are things I made up.

See this documentation page for more information about multidimensional arrays.

[Walter Roberson]

Another common term for the third dimension is "panes" (sometimes "planes") especially when you are referring to color information or multisensor information.