Yes, but I DON'T want eh spikes smoothed out On Fri, 2010-08-20 at 17:16 +0200, Jangita wrote:
> On 20/08/2010 5:12 p, Bryan Cantwell wrote: > > I am trying to produce charts for large amounts of data. I already limit > > the user to a smaller time frame in order to reduce the possible data > > points, but still can end up with far more data points than are clearly > > plottable on a chart. Does anyone have an idea of how I can drop > > insignificant points, or average the data or do something to end up with > > no more than about 3k points and still show spikes and dips in the > > charts so my users can still clearly identify anomalies in their charts? > > I don't want to smooth out the spikes and dips if at all possible. > > I considered running through the dataset and doing a compare of point 2 > > to point 1 and if it is close in value throw it away, otherwise keep it. > > That probably would not work on a 'noisy' chart however... > > > > > > THanks, > > Bryancan > > > Have you tried instead of showing per minute, show the average per hour, > or per day; this will generally smoothen the points out a little; In my > case if i show registrations per day i get dips every Saturday and > Sunday so it looks all jagged, But per week doesn't show the > Saturday/Sunday dips... > > -- > Jangita | +256 76 91 8383 | Y! & MSN: jang...@yahoo.com > Skype: jangita | GTalk: jangita.nyag...@gmail.com >
