Thanks Ric .... that was easy to implement (even if I don't totally understand it).
David On Fri, 2010-06-11 at 09:41 +1200, Sherlock, Ric wrote: > You can just plot series of different lengths rather than padding with zero. > > load 'plot' > data=: 15 ?...@$ 50 > > pd 'reset' > pd"1 ,.data ; 7(+/ % #)\ data > pd 'show' > > Or to offset the start of the second series: > > series1=: (i.15) ; data NB. raw data > series2=: (6+i.9) ; 7(+/ % #)\ data NB. moving average > > pd 'reset' > pd"1 series1,:series2 > pd 'show' > > > From: David Vincent-Jones > > Sent: Friday, 11 June 2010 09:19 > > > > Great alternate approaches ... > > > > Symmetrically padding appears to me a most valid direction, and fairly > > simple to implement. Difficult to apply "n/a" in a plot but zero values > > would be at least comprehensible to the viewer. > > > > Bo's idea of shorter edge samples is also a nice touch. > > > > Thanks all; > > > > David > > > > On Thu, 2010-06-10 at 11:18 -0400, Raul Miller wrote: > > > Here's a moving average implementation which > > > uses shorter samples near the edges: > > > > > > mean=: +/ % # > > > noNaN=: #~ 1 - 128!:5 > > > avg=: m...@nonan > > > nanPad=: ] (],[,]) _. #~ <:@[ > > > movingAvg=: [ avg\ nanPad > > > > > > Example use: > > > > > > 5 movingAvg i.10 > > > > > > Note that this particular result is longer than the right, > > > but a different amount of padding would change that. > > > > > > For example > > > > > > nanPad2=: <....@-:@[ |. ] ,~ _. #~ <:@[ > > > movingAvg2=:[ avg\ nanPad2 > > > > > > FYI, > > > > > > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
