Python modules to extract data from a graph?

[bigmit37]

It seems they are called plot digitizers. 
I want to be able extract data from a graph, in a nice dataframe type format.

Currently, mainly interested in line graphs. Is there anything out there like this? My searches didn't return anything. 

Thank you.

[sparkz_alot]

You might look at this post and see if it comes close to what your aiming for.
https://www.johndcook.com/blog/2016/04/2...e-a-graph/

[bigmit37]

You might look at this post and see if it comes close to what your aiming for.
https://www.johndcook.com/blog/2016/04/2...e-a-graph/

Thank you. I had seen that before creating this question, but when I went over the code, it seems like he's loading  data(a csv file)? I was confused by that as I thought the whole purpose was to create data.

[Skaperen]

he (Cook) mentioned Web Plot Digitizer in passing (it's a link in his text).  his article focused more on what to do with the results.  he also included a good point "Then as a sanity check, plot your reconstruction to see if it looks like the original".  at least do that with your data if you don't do much else. the Cook article refers to the Rohatgi article which really has what you want (or at least one of).

[JohnnyE]

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.

link removed

John

User has been warned for this post. Reason: Off topic - not related to Python

Larz60+ write Dec-23-2024, 10:36 PM:
link removed

[TysonL]

There are a few self-developed scripts in Python, like link removed. Or You try a dedicated software program, like link removed.

Larz60+ write Dec-23-2024, 10:38 PM:
click bait link removed