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May 17, 2017 at 21:58 history tweeted twitter.com/StackAcademia/status/864963338807234567
May 17, 2017 at 10:58 comment added Alf @Roland I see what you mean and I guess I was just a bit too, hmm, maybe cautious or shy but it principle everything published is something I can further use or work with I guess (with proper acknowledgement)
May 17, 2017 at 10:49 comment added user9482 Extracting data shouldn't introduce errors if done right. It usually introduces additional uncertainty which can be taken into account for subsequent analyses. A graph is just a different way of presenting information than a table. Would you have the same doubts with extracting data from a table?
May 17, 2017 at 10:46 vote accept Alf
May 17, 2017 at 10:46 comment added Alf @Roland I see, let my try to explain: I think my personal feeling is that using these tools to extract data feels a bit like just copying somebody's data + I might introduce errors by extracting the data which could lead to wrong conclusions about the original dataset (only on a first check, though, a through check would/should reveal that I made an error). But that issue is tackled by JayFromA's answer.
May 17, 2017 at 10:41 comment added user9482 I'd understood what your doubts are about. What I'm interested in is why you have doubts. Such information could help writing more specific answers. Extracting data from graphs has a long tradition. I can't see how anybody would suspect ethical problems if proper citation rules are observed. That's why I'm asking you for your reasoning.
May 17, 2017 at 10:27 comment added Alf @Roland my doubts are about extracting the data with software-tools from their plots and do further research with it - instead of having the proper (real/raw) dataset and allowance from the original author.
May 17, 2017 at 10:23 comment added user9482 Can you elaborate why you have doubts regarding if it is OK?
May 17, 2017 at 10:20 answer added asquared timeline score: 7
May 17, 2017 at 10:13 history asked Alf CC BY-SA 3.0