How to select a rectangle on a graph?

Hi everyone :)

I cannot use the image processing toolbox function 'getrect' which lets you draw a rectangle on a graph and get its information (min X, min Y, width and length). I don't have the toolbox and it will take long time to get hold of it. I want to have this ability using standard Matlab only. How to do that?

Any help will be welcomed and appreciated, Alon

Answer 1

[KSSV]

doc imrect.

[Alon Rozen]

Thanks KSSV, but 'imrect' is part of image processing toolbox which I can't use. I am trying to solve this without any toolbox.

[KSSV]

Then go for ginput. doc ginput.

[Alon Rozen]

Thanks again, KSSV. Unfortunately, ginput requires to hold the execution until a respond is received. Also it is not a rectangle but a set of points. I need something which is similar to the way a preson use the + tool to enlarge part of the graph. Thanks anyway.

[KSSV]

How about this?

clc; clear all ;

plot(rand(10,1))
rectangle('Position',[0.59,0.35,3.75,1.37],...
         'LineWidth',2,'LineStyle','-')

You can change position, length and width.

Other option is. You can insert rectangle on the figure, go to insert > Rectangle. You can drag drop, adjust it's position, length and width. Then you can call ginput to get positions.