Using findObj to locate ROI.Lines and extract position data

Hi, Im trying to add an option to the Contex Menu of the MATLAB Distance_using_lines_ROIs example code that allowed users to display the magnitudes of all of the line ROIs magnitudes. I figured I could just use findObj to locate the ROIs and use a command like getPosition or evt.Source.Position but I dont think I'm going about it the right way. Would I need the handles of each ROI too in order to get access to their position? Is there a location that Event data is stored that can be refrenced? Would I have to import my Axes data? Clearly ROIs are still a little abstract to me...

This is my function, when I call it in my code I pick up all the ROIs I am just searching for a way to gather their magnitudes into a table.

function plotAll(src)
    pFig = ancestor(src,'figure');
    pROIs = findobj(pFig,'Type','images.roi.Line');
    table(pROIS)
end

This is the MATLAB code i'm building off of

https://www.mathworks.com/help/images/measure-distances-in-images.html

Thanks!

[Walter Roberson]

In the brief test I just did,

cat(3,findobj(gcf,'Type','images.roi.Line').Position)

worked. The third dimension is for the case where there are multiple ROIs.

[William Schultz]

Hi, thanks for the quick reply. Should I be able to save this concentrated array to a variable that I can tabulate or export to excel?

Should it look something like this? Thanks I appreciate your help.

function plotAll(src)
    gcf = ancestor(src,'figure');
    ROIs = cat(3,findobj(gcf,'Type','images.roi.Line').Position);
    t = array2table(ROIs)
end
  

[Walter Roberson]

You will need to reshape it. Maybe

reshape(ROIs, 4,[]).'

My guess is that would give x1 x2 y1 y2 for each row