MATLAB: Code following function

functionMATLABmatlab function

om = if

How do I code this function? The requirements are that z is a matrix. Thanks.

x=[1:0.01:10]
y=x-4*sin(2*x)-4

Best Answer

Try this:

z = zeros(size(y));
z(y>0) = 1;
z(y<0) = -1;

Related Solutions

MATLAB: 3D plot help

X = (1:1:5)'; % column vector of Param 1
Y = (1:1:10)'; % column vector of Param 2
Z = sin((1:1:50))'; % example of 1D data, but in real case it is point by point (not a function like sin(x,y), cos or any). 
shape_Z = reshape(Z, length(X), length(Y));% in 2D representation
surf(X,Y,shape_Z')
shading interp

MATLAB: Point Categorisation via a suggested Mathematica If Statement

Utilising Walters suggested syntax, the expected code in MATLAB is:

    f_1 = (abs(location.x) <= abs(location.y)).*sign(location.y); %Selects X Axis points
    f_2 = (abs(location.y) <= abs(location.x)).*sign(location.x); %Selects Y Axis Points
    f(1,:) = A.*f_1;   %Kx
    f(2,:) = -A.*f_2;   %Ky
    f(3,:) = 0;        %KJz

As mentioned in my initial post, I'm not sure why I require two functions in MATLAB, but the writer in mathematica could achieve the same thing with a single function - if anyone can manage this it would be nice to have, but is unimportant in general.

Best Answer

Related Solutions

MATLAB: 3D plot help

MATLAB: Point Categorisation via a suggested Mathematica If Statement

Related Question