Surface Animation from For Loop Help

Hi, I am trying to create a surface that changes over time by using a for loop. I want this to be a plane surface that changes orientation by the values in the arrays I have set for x and y. I cannot seem to get an animation to be made after trying several techniques found online. Here is my current code, thanks in advance.

% Lat for test
x = [0 0.018000 0.0330 0.0410 0.0490 0.0550 0.0640 0.0760 0.0960];

% Long for test
y = [0 0.1520 0.20 0.180 0.1880 0.2270 0.2820 0.3380 0.3880];

g = 1;

Slope = [];

for i = 2:length(x) % Go through data one step at a time until through all data
    
    % Slope must change each time with different x value
    Slope(i) = (x(i) - x(i-1))/(y(i) - y(i-1));
    
end

ynew = Slope.*x;

for i = 1:length(Slope) 
    
    figure(1)
    surf([x; x], [ynew(1,:); ynew(1,:)], [zeros(size(x)); ones(size(x))]); % Surface attempting to be moved
    
end

[Image Analyst]

You forgot to atach 'latlong.xlsx'. Also, when you're editing to attach that, highlight your code and click the Code icon to format it as code. I'll check back later.

[Luke Malone]

Hi, latlong.xlsx was just the data I was importing from. I was using the x and y as just a snippet from that data sheet for my testing purposes. I have removed import line to reduce any confusion. Thank you

[Image Analyst]

Luke, try to run the code before posting. We can't run that code. It gets to the time line and then says it doesn't know what T is.

[Luke Malone]

My bad, I didn't know that you could run the code in the browser, I just tested it here now and it seems to work.

Answer 1

[Image Analyst]

In your loop, this does not change

[ynew(1,:); ynew(1,:)]

Nothing in that depends on "i" so your surface looks the same at every iteration.

And put in

drawnow;
pause(1);

at the end of your loop so you can see each individual surface.

[Luke Malone]

I tried using,

surf([x(i); x(i)], [ynew(i)(1,:); ynew(i)(1,:)], [zeros(size(x)); ones(size(x))]);

But this didn't work either. Where should I put the (i) dependecy?

[Image Analyst]

Do you actually HAVE a surface? Or just an x and y vector? You might need to make a surface with scatteredInterpolant before you can call surf. See attached demo.