Plotting a straight line with different 'x' and 'y' lengths

Hi,

I've got an 'imagesc' plot and I would like to plot a line that goes through all the 'x' and 'y' values for a certain value of the 'z' component. To show it visually, I would like something like this:

where the black line goes through all the 'x' and 'y' values for a certain 'z' value (in this case, 'z' is around 40).

Thanks so much for your help in advance.

[Ganesh]

Hi @Guillem Foreman,

You can try using

hold on

And then plot a line on the generated imagesc using, line function. Filter out the extreme x,y values corresponding to a given z in advance. If the given line is purely linear, this approach should work.

[Guillem Foreman]

@Ganesh yes, but my line is not purely linear because the x and y ranges are different

[Adam Danz]

Is the goal to fit a straight line to the (x,y) coordinates that lie under z=~35?

If so, find all z values within close proximity to whatever target value you're using and return the indicies. Then use those indicies to get the (x,y) values and fit the results to a line.

If you get stuck with this approach, show us what you've got and I'm sure we can help smooth things out.

[Guillem Foreman]

Alright, I finally managed to get it :) I had actually gotten the indices you were talking about, but for some reason I was trying to only use the first one to build the line. Thanks!