Post 9lISTnoLSJ41r5g3Dk by thurloat@mastodon.club
 (DIR) More posts by thurloat@mastodon.club
 (DIR) Post #9lISK7ONnXmrgouqS8 by pagrus@playvicious.social
       2019-07-27T23:44:43Z
       
       0 likes, 1 repeats
       
       Hi friends! Who would like to chat about fitting polynomials to histograms in python?
       
 (DIR) Post #9lISKKFzy1nxaa5pgm by pagrus@playvicious.social
       2019-07-27T23:49:36Z
       
       0 likes, 0 repeats
       
       Basically, I have a histogram. It will probably not be anything like a normal distribution.I'd like to fit a polynomial, then find minima and maxima but also points where the slope is highest or what have you.At the end of the day all I really want is the x values where those occur, am I going about this the wrong way? Is there a name for what I am attempting to do?
       
 (DIR) Post #9lISKKWey58GQFt8eu by pagrus@playvicious.social
       2019-07-28T00:04:35Z
       
       0 likes, 1 repeats
       
       here, maybe this will help show what I'm trying to do(image captions - hand drawn graphs of previous messages)
       
 (DIR) Post #9lISTnoLSJ41r5g3Dk by thurloat@mastodon.club
       2019-07-28T00:43:33Z
       
       0 likes, 0 repeats
       
       @pagrus if I were in a hurry i'd probably just crawl through the list of values waiting for the direction to change and ship the indices off to a separate list.should only have to keep state of last value, and should be efficient enough to complete in a single pass through the list and a static amount of memory.the new list should contain all the min and max indexes in the histogram list.
       
 (DIR) Post #9lISTo7UJ8NOoSdL3g by pagrus@playvicious.social
       2019-07-28T01:21:03Z
       
       0 likes, 0 repeats
       
       @thurloat the histograms I'm thinking about will probably be pretty wiggly and I thought it would be better to smooth them out (debounce?) before trying to get maxima out of them. Probably 255 buckets, but maybe 1000 depending on how I set things upAlthough maybe I could just use your suggestion and group or cluster the wiggly parts, hmmmmThanks!
       
 (DIR) Post #9lISToPvCb7bjdG3n6 by dredmorbius@mastodon.cloud
       2019-07-28T04:04:55Z
       
       0 likes, 0 repeats
       
       @pagrus Mumble mooving averages, splines, 1st derivatives.@thurloat
       
 (DIR) Post #9lIT4ppSuoCepRrMjQ by pagrus@playvicious.social
       2019-07-28T04:11:50Z
       
       0 likes, 0 repeats
       
       @dredmorbius @thurloat thanks! reading up now