Can you add histograms showing various stats by tag to user profile pages?

I would recommend showing total score, number of answers, percentage of answers that were accepted, or number of downvotes by tag, either for the 5-10 most active tags for that user or whichever tags you select.

This would give a rather idea of the user's skill level in specific areas, and would be very helpful for Careers.

It would also be interesting to allow a date filter to see what areas a user has learned and how long it took to learn them.

It would also help track silver/gold tag badges

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+1 for this question: more user profile statistics would be welcome (as they are addictive ;-) –  ChristopheD Jan 15 '10 at 18:52
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I added some per-user statistics to my SO stats pages. Currently I've only run this for 10k+ users, but it shows a bunch of user stats per user and for each user, per tag.

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I don't seem to understand the "Answers" column. I can't reconcile my SO profile which says 615 answer today, to the 1889 from your data. but I do often edit my answers to provide progressively better responses. It is possible you;re counting each edit separately? Very cool stuff, in any case. –  dmckee Jan 18 '10 at 20:23
    
It seems that the rep-points that a user has, is roughly related to how many answers they have. So I would like to see a scatter plot of rep vs number of answers. –  Brad Gilbert Jan 18 '10 at 20:43
    
Nice! Shame I only have 6608 rep on stackoverflow ;-) –  ChristopheD Jan 18 '10 at 21:17
    
@dmckee: Hmm, it looks like I forgot to sanity check the data. I'll work on that later today and update here when I've got it sorted. :) –  Greg Hewgill Jan 18 '10 at 21:21
    
@dmckee: Ok, the totals page is now correct (it was just a bug in the rollup, the per-user pages weren't affected). –  Greg Hewgill Jan 19 '10 at 6:53
    
@Greg Hewgill: could you re-run this please (I've just crossed the 10k mark and would be interested in seeing my own stats). Thanks in advance! –  ChristopheD Apr 4 '10 at 23:14
    
@ChristopheD: I just re-ran it for the April data dump. However, your reputation was 9850 at that time. –  Greg Hewgill Apr 4 '10 at 23:18
    
@Greg Hewgill: Ok, thanks! (guess i'll have to be patient ;-) –  ChristopheD Apr 4 '10 at 23:23
    
@GregHewgill You need to check that URL, as it is returning this: The requested URL /~greg/stackoverflow/users/ was not found on this server. May I suggest: stackoverflow.com/users/893/greg-hewgill ? I could have edited it for you, but was uncertain about your preferences, and didn't feel right about taking such liberties. Just a friendly FYI. –  Feral Oink Jan 31 '12 at 6:28
    
@FeralOink: I've fixed the link, thanks for the note. –  Greg Hewgill Jan 31 '12 at 6:31
    
@Greg Hewgill: do you re-run these from time to time? Looks outdated. –  ChristopheD May 12 '12 at 10:30
    
@ChristopheD: I regenerate the statistics whenever there is a new public data dump. The most recent data dump was December 2011. –  Greg Hewgill May 12 '12 at 20:29
    
@GregHewgill: thanks for letting me know! –  ChristopheD May 14 '12 at 15:36
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