Errors Using Pic2Points

Hi, there! I am trying to overlay coordinate points on my groundwater site map, and I keep getting errors when trying the demo package from https://www.mathworks.com/matlabcentral/fileexchange/54799-convert-image-pixels-to-xy-coordinates. After downloading the demo files and running, this is what I get –

Im = imread('./Images/Plot.png');

CoordinateMatrix = pic2points(Im);

scatter(CoordinateMatrix (:,1), CoordinateMatrix (:,2),'.');

Error using imread>get_full_filename

File "./Images/Plot.png" does not exist.

I tried importing the Plot.png file into MATLAB and updating to that file path, but then it told me –

>> Im = imread('/Users/ivy/Documents/MATLAB/Plot.png');

CoordinateMatrix = pic2points(Im);

scatter(CoordinateMatrix (:,1), CoordinateMatrix (:,2),'.');

Unrecognized function or variable 'pic2points'.

Thanks so much in advance!

Answer 1

[Walter Roberson]

pic2points() needs to be installed from the File Exchange; https://www.mathworks.com/matlabcentral/fileexchange/54799-convert-image-pixels-to-xy-coordinates

[Ivy Kwok]

Thanks so much! Is that this? I had downloaded it from the File Exchange but am not sure how to install it. Apologies that I'm very new to all of this!

[Walter Roberson]

The easiest way is to install it using Add-On Explorer.

[Ivy Kwok]

Woohoo, it worked! Thank you so much for your help! :')