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about global in matlab

about global in matlab# Computation - 科学计算

m*i2004-03-29 08:03

1 楼

I use the profile commands to track my program, to my surprise I found that
the
line that "global a b c" takes a lot of time.
My a b c are cell arries. Is that the reason? Are there other ways that I can
share some variables among functions (Basically, I just want to initilize a,
b, c at the very beginning of the simulation, and use them later. Will
save/load be better?)

c*e2004-03-29 08:03

2 楼

You can load these variables at the beginning of each program if necessary.
Just write it as a separate function to put all the constansts.

【在 m**i 的大作中提到】

: I use the profile commands to track my program, to my surprise I found that
: the
: line that "global a b c" takes a lot of time.
: My a b c are cell arries. Is that the reason? Are there other ways that I can
: share some variables among functions (Basically, I just want to initilize a,
: b, c at the very beginning of the simulation, and use them later. Will
: save/load be better?)

m*i2004-03-29 08:03

3 楼

I found I can only load the variables into the base workspace. But I want use
them in a function (which has its own workspace.)

that
can
a,

【在 c*******e 的大作中提到】

: You can load these variables at the beginning of each program if necessary.
: Just write it as a separate function to put all the constansts.

a*a2004-03-29 08:03

4 楼

It's not a good thing to use global variables. You can always wrap these
"global variables" into a structure, and pass it through different functions

use
necessary.
I
initilize

【在 m**i 的大作中提到】

: I found I can only load the variables into the base workspace. But I want use
: them in a function (which has its own workspace.)
:
: that
: can
: a,