MATLAB: Their is error (Undefined function or variable ‘new’.) plz help to solve.

digital image processing

function new = fact(i)
for o=1:size(i, 1)
for j=1:size(i,2)
new (o,j,1)=i(o,j,1)*2;
new (o,j,2)=i(o,j,2)*2;
new (o,j,3)=i(o,j,3)*1;
end
end

Best Answer

Spacing is important in this case, because of command/function duality

function new = fact(i)

    for o=1:size(i, 1)
    for j=1:size(i,2)
    new(o,j,1)=i(o,j,1)*2;
    new(o,j,2)=i(o,j,2)*2;
    new(o,j,3)=i(o,j,3)*1;

end

end

Related Solutions

MATLAB: How to give different colors to different tracts

By sugestion of the cyclist:

I found it. If anyone needs it there it is:

function []= Test (TRACTS%%Cell with structs within, INFO%Information about each tract)

   close all; 
   for i=1:INFO.n_count 
       clear V; 
       for j=1:size(TRACTS{i}) 
       G(j) = TRACTS{i}(j,1); %Info about x axis 
       H(j) = TRACTS{i}(j,2); %Info about y axis
       I(j) = TRACTS{i}(j,3); %Info about z axis    
       J = G(j)-G(1); 
       K = H(j)-H(1); 
       L = I(j)-I(1); 
       V(j,1)=J; 
       V(j,2)=K;
       V(j,3)=L;       
       W(i,j) = abs(V(j,1))+abs(V(j,2))+abs(V(j,3));       
       end   
       %knowing that RGB color codes are [a b c]
       %we consider the weight that each V has in the W
       %obtaining something like [0.1 0.2 0.6]
       M = [abs(V(j,1))/W(i,j) abs(V(j,2))/W(i,j) abs(V(j,3))/W(i,j)];
      plot3(TRACTS{i}(:,1),TRACTS{i}(:,2),TRACTS{i}(:,3),'Color',M);grid on;
   hold on;
   end
end

I am not sure of what you pretended Jan Simon. I need to change the number of iterations for each position of the cell TRACTS, because the number of points used to generate a track differs. I made this code and he works reasonibly well. However i am open to any changes that you or anyone sugest in order to enhance this code :)

MATLAB: Unbalanced or unexpected parenthesis or bracket.

You cannot have any word such as "sum" immediately before a "[".

In MATLAB, "[" and "]" are used for building arrays, not for grouping for order of operations and not for indicating arguments to a function. You should change all of the "[" and "]" on that line to "(" and ")"

Best Answer

Related Solutions

MATLAB: How to give different colors to different tracts

MATLAB: Unbalanced or unexpected parenthesis or bracket.

Related Question