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Testing Martin's statistics code

axiom

)abbrev package STAT StatisticalFunctions
StatisticalFunctions(F:Field): Exports == Implementation where

    Exports == with
      mean: List F -> F

      stddev: List F -> F

      if F has OrderedRing then
        median: List F -> F

    Implementation == add

      mean l ==
        n := #l::F
        if n = 0 then error "The mean of an empty list is not defined"
        reduce(_+, l)/n

      stddev l ==
        n := #l::F
        if n = 0 then error "The standard deviation of an empty list is not _
                             defined"

        m := mean l
        reduce(_+, map((#1-m)**2, l)$ListFunctions2(F,F))/(n-1)

      if F has OrderedRing then
        median l ==
          n := #l
          if n = 0 then error "The median of an empty list is not defined"
          sort(l).(n quo 2)

axiom

Compiling FriCAS source code from file 
      /var/zope2/var/LatexWiki/4372653822899247572-25px.001.spad using 
      old system compiler.
   STAT abbreviates package StatisticalFunctions 
------------------------------------------------------------------------
   initializing NRLIB STAT for StatisticalFunctions 
   compiling into NRLIB STAT 
   compiling exported mean : List F -> F
Time: 0.11 SEC.

   compiling exported stddev : List F -> F
Time: 0.06 SEC.

****** Domain: F already in scope
augmenting F: (OrderedRing)
augmenting $: (SIGNATURE $ median (F (List F)))
   compiling exported median : List F -> F
Time: 0.02 SEC.

****** Domain: F already in scope
augmenting F: (OrderedRing)
augmenting $: (SIGNATURE $ median (F (List F)))
(time taken in buildFunctor:  0)

;;;     ***       |StatisticalFunctions| REDEFINED

;;;     ***       |StatisticalFunctions| REDEFINED
Time: 0 SEC.

   Cumulative Statistics for Constructor StatisticalFunctions
      Time: 0.19 seconds

   finalizing NRLIB STAT 
   Processing StatisticalFunctions for Browser database:
--->-->StatisticalFunctions((mean (F (List F)))): Not documented!!!!
--->-->StatisticalFunctions((stddev (F (List F)))): Not documented!!!!
--->-->StatisticalFunctions((median (F (List F)))): Not documented!!!!
--->-->StatisticalFunctions(constructor): Not documented!!!!
--->-->StatisticalFunctions(): Missing Description
------------------------------------------------------------------------
   StatisticalFunctions is now explicitly exposed in frame initial 
   StatisticalFunctions will be automatically loaded when needed from 
      /var/zope2/var/LatexWiki/STAT.NRLIB/code

axiom

mean [1,2,3]

(1)

Type: Fraction Integer

is it possible to change the package --unknown, Tue, 26 Jul 2005 05:15:09 -0500 reply

axiom

median (["a","g","u","a","d"])

(2)

Type: Symbol

subject:

	( 7 subscribers )