need function to compute iterations of element in matrix

hi every body i need matlab function to compute the number of iterations of one elements in matrix just like in excel when u want to compute for example how much the No. 3 occur in some column = counif(a1:a10;"=3") { in excel } is there a function in matlab can do the same thinks

tanks in advance

Answer 1

[AJ von Alt]

One approach is to create a logical matrix for the input by comparing it to the target value. You can then sum a row, column, or the whole matrix to get the number of instances, since each instance is indicated by a 1.

% create a 50 x 50 matrix taking integers between 1 and 10
M = randi( 10 , 50 , 50 );

% the value you wish to count instances of
targetVal = 3;

% create logical matrix indicating presence of targetVal at location
isTarget = (M == targetVal);

% Find the number of instances in the matrix
nVals = sum( isTarget(:) );

% Find the number of instances in row 3
nvalsR3 = sum( isTarget(3,:) );

% Find the number of instances in column 12
nvalsC12 = sum( isTarget(:,12) );

[Abdulkareem]

thank u very much mr. AJ von Alt u answer solve the problem

Answer 2

[Azzi Abdelmalek]

A=[1 2 3;3 0 1;4 5 6;3 1 5]
n1=sum(A(:,1)==3) % number of 3 in the first column
n2=sum(A(:,3)==3) % number of 3 in the third  column

[Abdulkareem]

thank u very much