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From: gunther on 16 Jul 2010 18:19
Hello!

I would like to do the following:

A=zeros(2) is a predefined 2*2 matrix

I want to fill this matrix to indicate the frequencies of 4 different events whose occurrence is evaluated in the course of a conditional statement that is nested in a for loop

for i=1:10

if event_1 ==1

add 1 to A(1,1)

elseif event_2 ==1

add 1 to A(1,2)

elseif event_3 ==1

add 1 to A(2,1)

else

add 1 to A(2,2)

end

end


e.g. A= 3 4
2 1 would state that event_1 occurred 3 times, event_2 4 times, etc.

How can I do this while keeping the for loop as well as the conditional statement?

I would be glad if you could help me with this
Many thanks!
forben
From: Nathan on 16 Jul 2010 18:39
On Jul 16, 3:19 pm, "gunther " <for...(a)web.de> wrote:
> Hello!
>
> I would like to do the following:
>
> A=zeros(2) is a predefined 2*2 matrix
>
> I want to fill this matrix to indicate the frequencies of 4 different events whose occurrence is evaluated in the course of a conditional statement that is nested in a for loop
>
> for  i=1:10
>
>          if  event_1 ==1
>
>                 add 1 to A(1,1)
>
>         elseif event_2 ==1
>
>                 add 1 to A(1,2)
>
>         elseif event_3 ==1
>
>                add 1 to A(2,1)
>
>         else
>
>              add 1 to A(2,2)
>
>         end
>
> end
>
> e.g. A=   3  4
>               2 1  would state that event_1 occurred 3 times, event_2 4 times, etc.
>
> How can I do this while keeping the for loop as well as the conditional statement?
>
> I would be glad if you could help me with this
> Many thanks!
> forben

Simple case:

for i=1:10
if event_1 ==1
A(1,1) = A(1,1) + 1
elseif event_2 ==1
A(1,2) = A(1,2) + 1
elseif event_3 ==1
A(2,1) = A(2,1) + 1
else
A(2,2) = A(2,2) + 1
end
end


All you had to do was write it out.

-Nathan
From: Jan Simon on 17 Jul 2010 08:09
Dear Nathan,

You have converted:
> >                 add 1 to A(1,1)
to
> A(1,1) = A(1,1) + 1

I do not find the right words to comment that.
It reminds me to a workmate, who had to write a text about the topic "what is bold". Her text was firm: "This is bold."
Actually it is not needed to mention, that she had passed the exam.

kind regards, Jan
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