digitize2.m

GUI-driven version of original digitize function

Description

DIGITIZE digitize data from image.
DIGITIZE with no input or output arguments allows the user to select an image file to load; only IMREAD-compatible image files are supported. The function then prompts the user to graphically identify the location of the origin and the X- and Y- axes of the plot. The user may then graphically select an arbitrary number of data points from anywhere on the image using the left mouse button. Data acquisition is terminated by clicking the right mouse button. The function then prompts the user to save the acquired data to file.

• Acknowledgements: This submission has inspired the following:; DIGITIZE07, Digitize_map
• MATLAB release: MATLAB 6.0 (R12)

[Steve Grobler]

Works well on my .jpg graphs.

Ability to handle axes that are not perpendicular due to photocopying distortion would be useful.

Saved me a lot of time in trying to write my own program.

Has a bug at line 273, when writing data to file - fixed simply by splitting the if statement into two...see lines 273/274 below

270 if nargout == 0,
271 % Save data to file
272 [writefname, writepname] = uiputfile('*.dat','Save data as');
273 if (writefname == 0)
274 elseif (writepname == 0)
275 close(FigName)
            break
            return
        end

[Mohamad Alkhalidi]

Thank you. This is Excellent program. Helped me alot and saved my time. Also thanks to Steve Grobler for fixing the bug.

[J Fujii]

Dittos on the above comments

[Ashish Nedungadi]

Great job! Saved me from having to ask author for data!

Would be great to add feature for multiple lines on same plot. e.g. if there are two curves, it'd be nice to save to a different file and/or variable name.

[Neil Bailey]

What can I say? This script saved my eyes. I was able to trade 4 hours per graph of squinting over a ruler and planimeter for 30 minutes of scanning and clicking points.

[A Wilson]

A great little function, and it saved me a lot of work. Well done!

[Angel Ruiz Angulo]

Excelente!!!!!!
It is so helpful
thanks

[Clive Moon]

Very helpful function. Would be useful to have a little window showing the cursor and surroundings magnified to improve accuracy of point selection.

[Guido Dietz]

Thanx a lot!

[Panagiotis angelikopoulos]

extremelly easy,handy and well written.well done anil!

[Eskandar Mounif]

MErci Merci

[beth meacham]

its lovely except it doesn't save the data the data file - i get this error message:

??? Error using ==> or
Inputs must have the same size.

Error in ==> digitize2 at 273
if (writefname == 0) | (writepname == 0),

[moises]

Excellent!!!!

[Ng Cg]

 

[Eoin]

Really good - I had the same error bas beth meacham (I use linux), but I grabbed the data fro the command line anyway.

[shiva Banerjee]

The error in writing the data-file arises from using the single pipe for or operator ("|") in line 273. Change this to "||" to fix.

[AHMET ANIL DINDAR]

Long live Anil...