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[Emacs-diffs] master 2667d5c: Add new functions for the root mean square
From: |
Jay Belanger |
Subject: |
[Emacs-diffs] master 2667d5c: Add new functions for the root mean square of a (Calc) vector |
Date: |
Wed, 16 Sep 2015 00:53:52 +0000 |
branch: master
commit 2667d5c7fbaa3de8103488c7e3779eb768f9d15c
Author: Jay Belanger <address@hidden>
Commit: Jay Belanger <address@hidden>
Add new functions for the root mean square of a (Calc) vector
* lisp/calc/calc-stats.el (calcFunc-rms, calc-vector-rms):
New functions.
* lisp/calc/calc-ext.el (calc-init-extensions): Add keybinding for
`calc-vector-rms', add autoloads for `calc-vector-rms' and
`calcFunc-rms'.
* lisp/calc/calc-map.el (calc-u-oper-keys): Add entry for
`calcFunc-rms'.
* lisp/calc/calc-menu.el (calc-vectors-menu): Add entry for
`calc-vector-rms'.
* doc/misc/calc.texi (Single-Variable Statistics): Document the rms
command.
---
doc/misc/calc.texi | 10 +++++++---
lisp/calc/calc-ext.el | 7 ++++---
lisp/calc/calc-map.el | 1 +
lisp/calc/calc-menu.el | 7 +++++++
lisp/calc/calc-stat.el | 11 +++++++++++
5 files changed, 30 insertions(+), 6 deletions(-)
diff --git a/doc/misc/calc.texi b/doc/misc/calc.texi
index 034f42b..06e476d 100644
--- a/doc/misc/calc.texi
+++ b/doc/misc/calc.texi
@@ -20738,9 +20738,12 @@ mean, then repeating until the two values converge.
$$ a_{i+1} = { a_i + b_i \over 2 } , \qquad b_{i+1} = \sqrt{a_i b_i} $$
@end tex
address@hidden @cindex Root-mean-square
address@hidden Another commonly used mean, the RMS (root-mean-square), can be
computed
address@hidden for a vector of numbers simply by using the @kbd{A} command.
address@hidden u R
address@hidden Root-mean-square
address@hidden rms
+Another commonly used mean, the RMS (root-mean-square), can be computed
+for a vector of numbers by using the @kbd{u R}
+(@code{calc-vector-rms}) address@hidden
@kindex u S
@pindex calc-vector-sdev
@@ -36503,6 +36506,7 @@ keystrokes are not listed in this summary.
@r{ v@: H u M @: @: 19 @:vmedian@:(v)}
@r{ v@: I H u M @: @: 19 @:vhmean@:(v)}
@r{ v@: u N @: @: 19 @:vmin@:(v)}
address@hidden v@: u R @: @: @:rms@:(v)}
@r{ v@: u S @: @: 19 @:vsdev@:(v)}
@r{ v@: I u S @: @: 19 @:vpsdev@:(v)}
@r{ v@: H u S @: @: 19 @:vvar@:(v)}
diff --git a/lisp/calc/calc-ext.el b/lisp/calc/calc-ext.el
index cb6ab6f..27898fd 100644
--- a/lisp/calc/calc-ext.el
+++ b/lisp/calc/calc-ext.el
@@ -574,6 +574,7 @@
(define-key calc-mode-map "uG" 'calc-vector-geometric-mean)
(define-key calc-mode-map "uM" 'calc-vector-mean)
(define-key calc-mode-map "uN" 'calc-vector-min)
+ (define-key calc-mode-map "uR" 'calc-vector-rms)
(define-key calc-mode-map "uS" 'calc-vector-sdev)
(define-key calc-mode-map "uU" 'calc-undo)
(define-key calc-mode-map "uX" 'calc-vector-max)
@@ -932,7 +933,7 @@ calc-preserve-point calc-replace-selections
calc-replace-sub-formula
calc-roll-down-with-selections calc-roll-up-with-selections
calc-sel-error)
- ("calc-stat" calc-vector-op calcFunc-agmean
+ ("calc-stat" calc-vector-op calcFunc-agmean calcFunc-rms
calcFunc-vcorr calcFunc-vcount calcFunc-vcov calcFunc-vflat
calcFunc-vgmean calcFunc-vhmean calcFunc-vmax calcFunc-vmean
calcFunc-vmeane calcFunc-vmedian calcFunc-vmin calcFunc-vpcov
@@ -1147,8 +1148,8 @@ calc-vector-covariance calc-vector-geometric-mean
calc-vector-harmonic-mean calc-vector-max calc-vector-mean
calc-vector-mean-error calc-vector-median calc-vector-min
calc-vector-pop-covariance calc-vector-pop-sdev
-calc-vector-pop-variance calc-vector-product calc-vector-sdev
-calc-vector-sum calc-vector-variance)
+calc-vector-pop-variance calc-vector-product calc-vector-rms
+calc-vector-sdev calc-vector-sum calc-vector-variance)
("calc-store" calc-assign calc-copy-special-constant
calc-copy-variable calc-declare-variable
diff --git a/lisp/calc/calc-map.el b/lisp/calc/calc-map.el
index 3b5949c..d2c9da8 100644
--- a/lisp/calc/calc-map.el
+++ b/lisp/calc/calc-map.el
@@ -417,6 +417,7 @@
( ?G 1 calcFunc-vgmean )
( ?M 1 calcFunc-vmean )
( ?N 1 calcFunc-vmin )
+ ( ?R 1 calcFunc-rms )
( ?S 1 calcFunc-vsdev )
( ?X 1 calcFunc-vmax ) )
( ( ?C 2 calcFunc-vpcov )
diff --git a/lisp/calc/calc-menu.el b/lisp/calc/calc-menu.el
index 4408687..8610090 100644
--- a/lisp/calc/calc-menu.el
+++ b/lisp/calc/calc-menu.el
@@ -863,6 +863,13 @@
:keys "I u M"
:active (>= (calc-stack-size) 1)
:help "The average (arithmetic mean) of the data values as an
error form"]
+ ["rms(1:)"
+ (progn
+ (require 'calc-stat)
+ (call-interactively 'calc-vector-rms))
+ :keys "u R"
+ :active (>= (calc-stack-size) 1)
+ :help "The root mean square of the data values"]
["sdev(1:)"
(progn
(require 'calc-stat)
diff --git a/lisp/calc/calc-stat.el b/lisp/calc/calc-stat.el
index cf0b3ea..a797db2 100644
--- a/lisp/calc/calc-stat.el
+++ b/lisp/calc/calc-stat.el
@@ -71,6 +71,11 @@
(calc-vector-op "meae" 'calcFunc-vmeane arg)
(calc-vector-op "mean" 'calcFunc-vmean arg)))))
+(defun calc-vector-rms (arg)
+ (interactive "P")
+ (calc-slow-wrapper
+ (calc-vector-op "rms" 'calcFunc-rms arg)))
+
(defun calc-vector-mean-error (arg)
(interactive "P")
(calc-invert-func)
@@ -318,6 +323,12 @@
suminvsqrwts))
(math-div (calcFunc-reduce '(var add var-add) means) len)))))))
+(defun calcFunc-rms (a)
+ "Return the root-mean-square of the vector A."
+ (math-sqrt
+ (calcFunc-vmean
+ (calcFunc-map '(var abssqr var-abssqr) a))))
+
(defun math-fix-int-intv (x)
(if (math-floatp x)
x
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