Find Function In Mat

Matlab provides its user with a basket of functions in this article we will understand a powerful function called find.

Find function in mat.

A function is a special type of relation where. To directly find the elements in x that satisfy the condition x 5 use x x 5 avoid function calls like x find x 5 which unnecessarily use find on a logical matrix. A function relates inputs to outputs. For example find x 5 returns the linear indices to the elements in x that are less than 5.

Indices find x k or indices find x k first returns at most the first k indices corresponding to the nonzero entries of x. In general find x regards x as x which is the long column vector formed by concatenating the columns of x. If it finds none the function will return an empty matrix. Introduction to find function matlab.

S is a scalar in c opencv c 14 opencv 3 4 10 i know i can use the findnonzero function but it returns both row and column. In its simplest form find function will return the indices of array x that points to the nonzero elements. But if you re working with a parabola or any equation where the x coordinate is squared or raised to an even power you ll need to plot the vertex. If none are found find returns an empty 0 by 1 matrix.

Find the vertex of the function if it s quadratic. A function takes elements from a set the domain and relates them to elements in a set the codomain. A idx and b are vectors. To find array elements that meet a condition use find in conjunction with a relational expression.

I am trying to convert matlab code to c. In matlab i use the find function to get the indices of a vector and then copy these to other variables.