Prev: Serial terminator question
Next: Design of Experiments using statistics toolbox
From: us on 27 Jul 2010 18:13
"Jan Simon" <matlab.THIS_YEAR(a)nMINUSsimon.de> wrote in message <i2nkpd$r4b$1(a)fred.mathworks.com>...
> Dear Matt Fig,
>
> > for xx= {'TSO' 'VLO'} ,xx,end
>
> Is this a documented feature? It worked in Matlab 6.5 already, but I cannot find a hint in the help or doc.
>
> Deeply impressed to learn something new about such a basic function, Jan

huh(!?)...
you MUST be kidding, jan...

:-)
urs
From: Matt Fig on 27 Jul 2010 18:14
"Jan Simon" <matlab.THIS_YEAR(a)nMINUSsimon.de> wrote in message <i2nkpd$r4b$1(a)fred.mathworks.com>...
> Dear Matt Fig,
>
> > for xx= {'TSO' 'VLO'} ,xx,end
>
> Is this a documented feature? It worked in Matlab 6.5 already, but I cannot find a hint in the help or doc.
>
> Deeply impressed to learn something new about such a basic function, Jan



Yes, in the doc for the FOR function:


"The line
for V = A, ..., end
has the same effect as
for k = 1:n, V = A(:,k); ..., end
except k is also set here."
From: Jan Simon on 27 Jul 2010 18:36
Dear Urs,

> > > for xx= {'TSO' 'VLO'} ,xx,end

> > Deeply impressed to learn something new about such a basic function, Jan
> you MUST be kidding, jan...

No, not kidding, Urs. FOR is *really* basic.

In fact, the help of FOR claims:
"FOR variable = expr, ... The columns of the expression are stored one at a time ...". I've done this with row vectors and matrices, but never with cell or struct arrays.

Wow. I think I should look into the "Getting started" again to find the other gems. Perhaps I'll find even a function, which can evaluate a string as if it would be typed in the command line? It would be so powerful. Or some lessons about English grammar?

Good night, Jan
From: Steven_Lord on 28 Jul 2010 11:19


"Jan Simon" <matlab.THIS_YEAR(a)nMINUSsimon.de> wrote in message
news:i2nn0k$kni$1(a)fred.mathworks.com...
> Dear Urs,
>
>> > > for xx= {'TSO' 'VLO'} ,xx,end
>
>> > Deeply impressed to learn something new about such a basic function,
>> > Jan
>> you MUST be kidding, jan...
>
> No, not kidding, Urs. FOR is *really* basic.

But even basic functions can have surprising (hopefully in a good way)
behavior, even for experienced users.

> In fact, the help of FOR claims:
> "FOR variable = expr, ... The columns of the expression are stored one at
> a time ...". I've done this with row vectors and matrices, but never with
> cell or struct arrays.

Yes, that's why that code worked. The FOR loop is iterating through the
columns of the 1-by-2 cell array; first xx takes on the value of the first
column of the cell array, aka {'TSO'} then it takes on the second column
{'VLO'}. Neat, huh?

> Wow. I think I should look into the "Getting started" again to find the
> other gems. Perhaps I'll find even a function, which can evaluate a string
> as if it would be typed in the command line? It would be so powerful.

To quote Uncle Ben: "With great power comes great responsibility" ... in
this case the responsibility to keep people from using EVAL when unnecessary
or dangerous :)

> Or some lessons about English grammar?
>
> Good night, Jan

--
Steve Lord
slord(a)mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ
To contact Technical Support use the Contact Us link on
http://www.mathworks.com

First  |  Prev  | 
Pages: 1 2 3
Prev: Serial terminator question
Next: Design of Experiments using statistics toolbox