MATLAB POLYSPACE RELEASE NOTES Instrukcja Użytkownika Pobierz pdf (Strona 149)

Other Data Structures

34 34 34 34

and

sum(M,2)

is a 4-by-1-by-24 array containing 24 copies of the column vector

Finally,

S = sum(M,3)

adds the 24 matrices in the sequence. The result has size 4-by-4-by-1, so

it looks like a 4-by-4 array:

204 204 204 204

Cell Arrays

Cell arrays in MATLAB are m ultidimensional arrays whose elements are

copies of other arrays. A cell array of empty matrices can be created with

the

cell function. But, more often, cell arrays are created by enclosing a

miscellaneous collection of things in curly braces,

{}. The curly braces are

also used w ith subscripts to access the contents of various cells. For example,

C = {A sum(A) prod(pr od(A))}

produces a 1-by-3 cell array. The three cells contain the m agic square, the

row vector of column sums, and the product o f all its elements. When

is displayed, you see

[4x4 double] [1x4 double] [209227 89888000]

4-11

1 2 ... 144 145 146 147 148 149 150 151 152 153 154 ... 239 240

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MATLAB POLYSPACE RELEASE NOTES Instrukcja Użytkownika Strona 149