Drawing Rectangle/Lines with data

Hello,

I have this matrix,

The first column is the base of the rectangle, starting from 0 till 0.15 and the second column is the magnitude of the height at both ends of the rectangle,

I am having trouble drawing it,, here is my code

 x1 = 0;
 x2 = 0.15;
   
    y1 =[ 0.0120];
    y2 = [0.0120];
   
    figure
    hold on 
    plot (x1,y1,'-');
    plot(x2, y2,'-');
   
    axis([0 0.5 0 0.1])

But, I am not getting correct results, I am getting nothing in the output.

Does any one know?

Answer 1

[Fangjun Jiang]

rectangle('Position',[0 0.15 0.012 0.012])
axis([0 0.02 0 0.2])

[Chris Dan]

Thanks, that was quick :)

[Chris Dan]

Fangjun Jiang

Hey, can you plase tell if I have a file like this :

How can I draw a single rectangle with changing height? the second column is the magnitude of the height, the first columns is about lengths of different sections of the rectangle?

[Fangjun Jiang]

Not really follow your question, maybe this?

data=out(1).model_data([1 k],:) % k could be 2, 3 or 4 in this case
rectangle('Position',data(:))

[Chris Dan]

what is k in this case? and it is not working

[Chris Dan]

Fangjun Jiang

I made this code

k = size(out,2);
 %% Drawing from the Data Files %
for i =1:1:k
    a = size(out(i).model_data,1)
    for j =1:1:(a-1)
        
        x1(j) = [out(i).model_data(j,1)];
        x2(j) = [out(i).model_data(j+1,1)];
        y1(j) =  [out(i).model_data(j,2)];
        y2(j) =  [out(i).model_data(j+1,2)];
        
        rectangle('Position',[x1(j) x2(j) y1(j) y2(j)])
         axis([0 0.02 0 0.2])
         hold on
    end
end

but the result I am getting is some thing like this

it is not right, because all the rectangles should be connected I dont know why they are not connected

[Fangjun Jiang]

Just draw it with a pencil manually and match it with the MATLAB code. You've known rectangle(). I don't think there is any difficulty writing code here. It is more difficult to understand what you want to do.