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-   -   the best way to extract data from a figure (https://www.cfd-online.com/Forums/main/13599-best-way-extract-data-figure.html)

Feitoudaer June 8, 2007 08:48

the best way to extract data from a figure
 
Dear all,

What's the best way, in your opinion, to extract data from a figure in a published paper. I am doing modelling and want to compare my results with well established and recognized results in a published paper. I am wondering if there is some nice software which can do this job well and in an easy way. Thanks a lot for your experience.

Praveen. C June 8, 2007 09:09

Re: the best way to extract data from a figure
 
I dont know about the "best" but this does the job

http://digitizer.sourceforge.net/

FYW June 8, 2007 15:23

Re: the best way to extract data from a figure
 
http://plotdigitizer.sourceforge.net/

matej June 10, 2007 02:58

Re: the best way to extract data from a figure
 
this one works too.

http://www.frantz.fi/software/g3data.php

ankitrohatgi September 27, 2010 14:06

Web Based Program
 
Well this thread is old, but I'm still posting a reply since this shows up on Google when you search for this stuff.

There's a web based program: http://www.arohatgi.info/WebPlotDigitizer/

Yes, I made it :P

mukut September 27, 2010 23:08

thanks. I have collected all these software for my future need. :)

raggar December 12, 2010 09:29

http://getdata-graph-digitizer.com/

It was freeware for russian students two year ago.

pano December 18, 2010 14:16

Guys, few years ago, I extensively used a wee code called Windig, it was pretty convenient as it had a cool magnifier and could rotate the scanned images or whatever as you wished. Simple and functioning. I still have the zipped file, should anyone want to have it, just ask me to send an e-mail to you. Unfortunately, it doesnt work on 64bit OSs. Take care, Pano

ankitrohatgi January 19, 2011 12:16

WebPlotDigitizer
 
I am currently developing my web-based program which I mentioned above to be able to automatically detect points on curves and deal with polar and ternary diagrams as well. This will take some time, but I'll update the group once I've done all that and you can perhaps suggest more features to add.

ankitrohatgi March 15, 2011 16:21

WebPlotDigitizer 2.0
 
I have completed the second version on my web based program to extract data from plots. You can check it out at http://arohatgi.info/WebPlotDigitizer

I have also made a convenient Chrome app for it.

This version supports XY charts, polar plots, ternary diagrams and maps. I have included an auto extraction system in it which can pull out large number of points for fairly uncomplicated plots.

You need Firefox 3.6+ or Chrome 6+ to use this. You don't need to install anything else for this.

sail March 15, 2011 16:45

Quote:

Originally Posted by ankitrohatgi (Post 299553)
I have completed the second version on my web based program to extract data from plots. You can check it out at http://arohatgi.info/WebPlotDigitizer

I have also made a convenient Chrome app for it.

This version supports XY charts, polar plots, ternary diagrams and maps. I have included an auto extraction system in it which can pull out large number of points for fairly uncomplicated plots.

You need Firefox 3.6+ or Chrome 6+ to use this. You don't need to install anything else for this.

looks wonderful! thank for your effort. i'll test it asap.

mohammad March 16, 2011 01:46

To Anki
 
That was easy and wonderful.....THANKS

siddhaling March 17, 2011 13:44

doubt
 
em student of engg.

guys i have just started with CFD
& i use Tecplot for extracting the data, for above purpose;
What r the merits of above aplications over it.

pls reply.

siddhaling March 17, 2011 13:48

hi
 
Hey can anone tell me how to apply orthgonality in grids.
I have developed C Code for elliptical equations.
(Cylinder placed in a fluid channel).

thanks

titanic12 March 17, 2011 21:43

Hi,
Last time I read a book including this topic. After coding based on some equations in that book, I generated an orthogonal mesh.

Sorry that I forgot the title of that book.
Best wishes
Dave

siddhaling March 18, 2011 06:57

thanks dave;

i need some more guidance for that will u please give me your email id;

my email id is : siddhaling@gmail.com

ashwingm June 8, 2016 08:54

Where do I change the proxy address, so that I can use it through my university's LAN
 
Where do I change the proxy address, so that I can use it through my university's LAN connection? Since you made the program, please reply.

Quote:

Originally Posted by ankitrohatgi (Post 276814)
Well this thread is old, but I'm still posting a reply since this shows up on Google when you search for this stuff.

There's a web based program: http://www.arohatgi.info/WebPlotDigitizer/

Yes, I made it :P


ankitrohatgi June 8, 2016 23:41

Since this program is web based, you will be using your web browser to open the website (and the program). Just ensure that your web browser or OS have the appropriate proxy settings. It's not different from opening any other website in your browser.

JohnnyE February 25, 2020 16:43

Free Graph Digitizer tool
 
Hi folks,

If anyone is interested, we have launched a free graph digitizer. You can use it to extract 1000's of points on a spectral curve in seconds. Give it a try and let me know what you think.

https://www.opticsforhire.com/graph-digitizer

John

Tinvink April 8, 2021 02:28

Free online browser based program plotdigitizer
 
Hello everyone,


Many of the programs listed in this thread are now outdated and not maintained by developers. Nowadays, I hardy use anyone of the mentioned. But there is one tool that I found to be very helpful to extract data from figures. And it is PlotDigitizer. It is freemium software, but I found it far better than any others I have ever used. You can auto-extract data from various graphs (XY, polar, ternary, bar, pie). You can read more on it on its website or check out is free online app. :)


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