Re: [Scilab-users] automatic traverse question

2017-05-12 Thread Erhy 
as I did
thank you



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Re: [Scilab-users] automatic traverse question

2017-05-12 Thread sgougeon 
Hello Erhy,

>I studied your solution and think there will be a very huge array with
>kronecker operator and  generated the planes with a for loop.

There is a common compromise between the used amount of memory and the 
algorithmic speed.
There we are.

>And now I have the problem with the max() function for all planes,
>at which in the resulting plane each pixel should have the max. values  of
>the according pixels of the planes mentioned.
>
>max() works of a known number of planes:
>resu=max(monos (:,:,1),monos (:,:,2),monos (:,:,3))
>
>What is the smartest way to code, if the number of planes can differ?

I am afraid that i don't clearly catch your point.
If what i guess is not too far from what you mean, here is a way:

MAX = monos(:,:,1);
for i = 2:N
   MAX = max(MAX, monos(:,:,i))
end

Samuel
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Re: [Scilab-users] automatic traverse question

2017-05-12 Thread Erhy 
I studied your solution and think there will be a very huge array with
kronecker operator
and  generated the planes with a for loop.

And now I have the problem with the max() function for all planes,
at which in the resulting plane each pixel should have the max. values  of
the according pixels of the planes mentioned.

max() works of a known number of planes:
resu=max(monos (:,:,1),monos (:,:,2),monos (:,:,3))

What is the smartest way to code, if the number of planes can differ?





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Re: [Scilab-users] automatic traverse question

2017-05-11 Thread Erhy 
much learned - thank you
Erhy



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Re: [Scilab-users] automatic traverse question

2017-05-11 Thread Erhy 
another question

gray=rand(200,300);
lumimins=[ 0.1, 0.5, 0.7, 0.9 ];
// doesn't work*:*
monos(:,:,1..length(lumimins)) = ( gray(:,:) >= lumimins(1:$) ) .* 1;

is there a way to generate 
a plane for each lumimins with automatic traverse?




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Re: [Scilab-users] automatic traverse question

2017-05-09 Thread Erhy 
Thank you Samuel!
This works:
resu(:,:)=abs(imdbl(:,:,1)-imdbl(:,:,2)) *.**
max(imdbl(:,:,1),imdbl(:,:,2)); 



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Re: [Scilab-users] automatic traverse question

2017-05-09 Thread sgougeon 
Hello Erhy,

>resu(:,:)=abs(imdbl(:,:,1)-imdbl(:,:,2))*max(imdbl(:,:,1),imdbl(:,:,2));

This syntax of max() works element-wise and returns a matrix.
Then, if the matrix is not square, the * multiplication can't work here.
So, depending of what you want to do, you shall either use .* instead of *,
or fix the way you use max().

HTH
Samuel
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[Scilab-users] automatic traverse question

2017-05-09 Thread Erhy 
Hello!

im = imread("xxx.jpg");
imdbl = im2double(im);
resu=zeros(imdbl (:,:,1));

This without problems*:*
resu(:,:)=imdbl(:,:,1)+imdbl(:,:,2)+imdbl(:,:,3);

But here I got the error message
*Inconsistent row/column dimensions*
resu(:,:)=abs(imdbl(:,:,1)-imdbl(:,:,2))*max(imdbl(:,:,1),imdbl(:,:,2));

Thank you for advice
Erhy



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