Uneven cell multiplication problem

Hey guys.

I am struggling to multple two cells, i ask for an input an that only way i know how to save it is through using a cell. I then have to multiply 2 uneven cells with eac other with each other like multiplying a matrix.

function failure_analysis

prompt = {'Ox(Pa):','Oy(Pa):','Txy(Pa):','Angle(Degrees):','S(Pa):','X(Pa):','Xprime(Pa):','Y(Pa):','Yprime(Pa):'};

a = [inputdlg(prompt)]

sij1 = a(1);

sij2 = a(2);

sij3 = a(3);

angle = 45;

S = a(5);

X = a(6);

Xprime = a(7);

Y = a(8);

Yprime = a(9);

sij = [sij1;sij2;sij3];

F6 = 0;

O6 = 0;

T = [cosd(angle).^2 sind(angle).^2 2*cosd(angle).*sind(angle);

sind(angle).^2 cosd(angle).^2 -2*cosd(angle).*sind(angle);

-cosd(angle).*sind(angle) cosd(angle).*sind(angle) (cosd(angle).^2 -sind(angle).^2)]

O = sij*T

The problem happens in the last line of code.

Any help would be appreciated as i have to hand in the code next week monday.

Thanks

Answer 1

[Ameer Hamza]

You first need to convert the output of inputdlg from char array to double. Try the following code

prompt = {'Ox(Pa):','Oy(Pa):','Txy(Pa):','Angle(Degrees):','S(Pa):','X(Pa):','Xprime(Pa):','Y(Pa):','Yprime(Pa):'};
a = inputdlg(prompt)

a = cellfun(@(x) str2double(x), a);

sij1 = a(1);
sij2 = a(2);
sij3 = a(3);
angle = 45;
S = a(5);
X = a(6);
Xprime = a(7);
Y = a(8);
Yprime = a(9);
sij = [sij1 sij2 sij3];
F6 = 0;
O6 = 0;
T = [cosd(angle).^2 sind(angle).^2 2*cosd(angle).*sind(angle);
    sind(angle).^2 cosd(angle).^2 -2*cosd(angle).*sind(angle);
    -cosd(angle).*sind(angle) cosd(angle).*sind(angle) (cosd(angle).^2 -sind(angle).^2)]
O = sij*T

[John Spencer De Wit]

Thanks it works perfectly

[Ameer Hamza]

I am glad to be of help.