File Exchange Pick of the Week

October 26th, 2005

Digitize Scanned Data

In my old job, I occasionally needed to analyze data that I only had access to in printouts. I hoped that somebody had developed an equivalent to OCR (Optical Character Recgonition) for data, but couldn’t find anything. I found the next-best-thing, “digitizer.m” on the old MathWorks FTP server (the predecessor to the File Exchange). With this utility, I could read data values off of a scanned plot just by clicking on them. Very simple and well executed.

I just stumbled across an updated version of this submission - DIGITIZER2, by Anil Prasad. Not one to rest on his laurels, Anil updated his classic digitizer with a simple UI that walks you through the process of ditizing scanned plots.

Note for users in R14 (and perhaps R13): if digitizer2 gives an error when writing out a file of data points, truncate line 273 to read:

   if (writefname == 0)

By Scott Hirsch

11:11 UTC | Posted in Uncategorized | Permalink |

You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

Comments are closed.

About

Bob, Brett & Jiro share their favorite user-contributed submissions from the File Exchange.

Subscribe


Recent Comments

  • Zach: Hi Doug and Les, I didn’t have a lot of time to mess with this, but I did find a work-around. I plotted...
  • hamed: k
  • Les: @Zach This isn’t exactly what you are looking for but at least it puts all three parameters on the same...
  • Zach: Thanks for your suggestions Doug. I’ll give that a shot and see what happens. I’ve seen many of...
  • Doug: @Zach, I would say to use plotYYY, because that is close to what you want, but using depth as Y makes sense....
  • Doug: @Teja, I think this will work: http://www.mathworks .com/access/helpdesk /help/techdoc/ref...
  • Gify: merry christmas :) nice christmas tree! Regards, Janet Gify
  • Teja: Dear Doug Is there anyway to plot a surface from nonuniform data without meshgrid and griddata? Basically i...
  • Zach: I’m working with geophysical data, so I’d like to produce a depth profile. The y-axis would be...
  • Doug: @Ashok First, please do not use variable names that are MATLAB commands (std and mean). Second, p(j) should be...

Blog Admin

These postings are the author's and don't necessarily represent the opinions of The MathWorks.