MATLAB POLYSPACE RELEASE NOTES Manuel d'utilisateur télécharger pdf (Page 155)

Other Data Structures

Now the structure is large enough that only a summary is printed:

1x3 struct array with fields:

name

score

grade

There are several ways to reassemble the various fields into other MATLAB

arrays. They are mostly based on the notation of a comma-separated list.If

you type

S.score

it is the same as typing

S(1).score, S(2).score, S(3).scor e

which is a comma-separated list.

If you enclose the expression that generates such a list within square

brackets, MATLAB s tores each item from the lis t in an array. In this example,

MATLAB creates a numeric row vector containing the

score field of each

element of structure array

scores = [S.score]

scores =

83 91 70

avg_score = sum(scores)/length(sco res)

avg_score =

81.3333

To create a character array from one of the text fields (name, for example), call

the

char functio n on the comma-separated list produced by S.name:

names = char(S.name)

names =

Ed Plum

Toni Miller

Jerry Garcia

4-17

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MATLAB POLYSPACE RELEASE NOTES Manuel d'utilisateur Page 155