improfile(), How can I use a .fig format with improfile?

Hello all,

I have a .fig file that I want to make multiple profiles for, but improfile doesn't like when I try to pass it as an input.

[x,y,I] = improfile; works when I have a figure already open, but I want to take the initial x that I draw and make additional profiles the next pixel over. So my code looks like this:

    figure(5)
    imagesc(X,Y,Q,[0 1])
    colormap(TSPcolormap);
    colorbar;  

    [Px,Py,I] = improfile; % draw initial profile

    for k=1:5
    [Qprof(:,k)] = improfile(figure(5), Px+k ,Py);   

    end

The .fig file is a matrix 600x800 and has a color map so if I try to save it as anything else it loses the scaling and shows up as intensity or RGB instead. So is there a way to tell improfile to read in the current figure?

Also I have tried replacing figure(5) with gcf, gca, etc. To use improfile with initial x and y would have to pass an image through and cannot leave it blank.

Thanks

Answer 1

[Ryan]

Ok figured it out! I needed to add the x and y axes. I also added getimage. Not sure if that was needed, but it ended up working.

    figure(5)
    imagesc(X,Y,Q,[0 1])
    colormap(TSPcolormap);
    colorbar;  
    h = getimage;

    [Px,Py,I] = improfile; % draw initial profile

    for k=1:5
    [Qprof(:,k)] = improfile(X, Y, h, Px+k ,Py);   

    end

Answer 2

[Image Analyst]

Pass Q into improfile() instead of figure(5).

Answer 3

[Ryan]

Thanks for the fast response! I passed Q through the function, but I returns a matrix of NaN. Any other thoughts?