From bc70de7b3302d5a81515b901cae376b8b51d2004 Mon Sep 17 00:00:00 2001 From: "Arnold D. Robbins" Date: Fri, 16 Jul 2010 13:09:56 +0300 Subject: Move to gawk-3.1.0. --- awklib/eg/network/statist.awk | 85 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 awklib/eg/network/statist.awk (limited to 'awklib/eg/network/statist.awk') diff --git a/awklib/eg/network/statist.awk b/awklib/eg/network/statist.awk new file mode 100644 index 00000000..8a583940 --- /dev/null +++ b/awklib/eg/network/statist.awk @@ -0,0 +1,85 @@ +function SetUpServer() { + TopHeader = "Statistics with GAWK" + TopDoc = "\ +

Please choose one of the following actions:

\ + " + TopFooter = "" + GnuPlot = "gnuplot 2>&1" + m1=m2=0; v1=v2=1; n1=n2=10 +} +function HandleGET() { + if(MENU[2] == "AboutServer") { + Document = "This is a GUI for a statistical computation.\ + It compares means and variances of two distributions.\ + It is implemented as one GAWK script and uses GNUPLOT." + } else if (MENU[2] == "EnterParameters") { + Document = "" + if ("m1" in GETARG) { # are there parameters to compare? + Document = Document "" + m1 = GETARG["m1"]; v1 = GETARG["v1"]; n1 = GETARG["n1"] + m2 = GETARG["m2"]; v2 = GETARG["v2"]; n2 = GETARG["n2"] + t = (m1-m2)/sqrt(v1/n1+v2/n2) + df = (v1/n1+v2/n2)*(v1/n1+v2/n2)/((v1/n1)*(v1/n1)/(n1-1) \ + + (v2/n2)*(v2/n2) /(n2-1)) + if (v1>v2) { + f = v1/v2 + df1 = n1 - 1 + df2 = n2 - 1 + } else { + f = v2/v1 + df1 = n2 - 1 + df2 = n1 - 1 + } + print "pt=ibeta(" df/2 ",0.5," df/(df+t*t) ")" |& GnuPlot + print "pF=2.0*ibeta(" df2/2 "," df1/2 "," \ + df2/(df2+df1*f) ")" |& GnuPlot + print "print pt, pF" |& GnuPlot + RS="\n"; GnuPlot |& getline; RS="\r\n" # $1 is pt, $2 is pF + print "invsqrt2pi=1.0/sqrt(2.0*pi)" |& GnuPlot + print "nd(x)=invsqrt2pi/sd*exp(-0.5*((x-mu)/sd)**2)" |& GnuPlot + print "set term png small color" |& GnuPlot + #print "set term postscript color" |& GnuPlot + #print "set term gif medium size 320,240" |& GnuPlot + print "set yrange[-0.3:]" |& GnuPlot + print "set label 'p(m1=m2) =" $1 "' at 0,-0.1 left" |& GnuPlot + print "set label 'p(v1=v2) =" $2 "' at 0,-0.2 left" |& GnuPlot + print "plot mu=" m1 ",sd=" sqrt(v1) ", nd(x) title 'sample 1',\ + mu=" m2 ",sd=" sqrt(v2) ", nd(x) title 'sample 2'" |& GnuPlot + print "quit" |& GnuPlot + GnuPlot |& getline Image + while ((GnuPlot |& getline) > 0) + Image = Image RS $0 + close(GnuPlot) + } + Document = Document "\ +

Do these samples have the same Gaussian distribution?

\ +
\ + \ + + \ + + \ + + \ + \ + + \ + + \ + + \ + \ +
1. Mean 1. Variance1. Count
2. Mean 2. Variance2. Count

" + } else if (MENU[2] ~ "Image") { + Reason = "OK" ORS "Content-type: image/png" + #Reason = "OK" ORS "Content-type: application/x-postscript" + #Reason = "OK" ORS "Content-type: image/gif" + Header = Footer = "" + Document = Image + } +} -- cgit v1.2.3