Package: grace
Version: 1:5.1.22-2
Severity: normal
The non-linear curve fitting tool in grace outputs the wrong value next
to "RMS per cent error:" It actually gives the RMS **relative** error,
i.e. it is out by a factor of exactly 100.
The RMS per cent error should be given as:
e = 100 * (y'-y)^2/y^2
* Patch attached for source code
* Reported to developers:
http://plasmagate.weizmann.ac.il/Grace/phpbb/viewtopic.php?t=1697&start=0&postdays=0&postorder=asc&highlight=
-- System Information:
Debian Release: squeeze/sid
APT prefers karmic-updates
APT policy: (500, 'karmic-updates'), (500, 'karmic-security'), (500,
'karmic-proposed'), (500, 'karmic-backports'), (500, 'karmic')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.30-9-generic (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages grace depends on:
ii defoma 0.11.10-0.2ubuntu1 Debian Font Manager --
automatic f
ii gconf2 2.26.2-1ubuntu1 GNOME configuration
database syste
ii gsfonts 1:8.11+urwcyr1.0.7~pre44-4 Fonts for the Ghostscript
interpre
ii lesstif2 1:0.95.0-2.3 OSF/Motif 2.1
implementation relea
ii libc6 2.9-9ubuntu2 GNU C Library: Shared
libraries
ii libfftw3-3 3.2.1-2ubuntu1 library for computing Fast
Fourier
ii libice6 2:1.0.5-1 X11 Inter-Client Exchange
library
ii libjpeg62 6b-14build1 The Independent JPEG
Group's JPEG
ii libnetcdf4 1:3.6.2-3.1 An interface for scientific
data a
ii libpng12-0 1.2.37-1 PNG library - runtime
ii libsm6 2:1.1.0-2 X11 Session Management
library
ii libt1-5 5.1.2-3 Type 1 font rasterizer
library - r
ii libx11-6 2:1.2.1-1ubuntu1 X11 client-side library
ii libxext6 2:1.0.99.1-0ubuntu3 X11 miscellaneous extension
librar
ii libxmu6 2:1.0.4-1build1 X11 miscellaneous utility
library
ii libxp6 1:1.0.0.xsf1-2 X Printing Extension
(Xprint) clie
ii libxpm4 1:3.5.7-2 X11 pixmap library
ii libxt6 1:1.0.5-3ubuntu1 X11 toolkit intrinsics
library
ii xmhtml1 1.1.7-15 A Motif widget for display
HTML 3.
ii zlib1g 1:1.2.3.3.dfsg-13ubuntu1 compression library -
runtime
grace recommends no packages.
Versions of packages grace suggests:
ii ghostscript 8.64.dfsg.1-0ubuntu14 The GPL Ghostscript
PostScript/PDF
pn grace-utils <none> (no description available)
ii texlive-extra-util 2007.dfsg.2-6ubuntu2 TeX Live: TeX auxiliary
programs
-- no debconf information
--- nonlfit.c.orig 2009-06-18 23:20:04.368929839 +0100
+++ nonlfit.c 2009-06-18 23:26:20.120928119 +0100
@@ -284,7 +284,7 @@
rms_pe += (yp[i] - y_saved[i])*(yp[i] - y_saved[i])/
(y_saved[i]*y_saved[i]);
}
- rms_pe = sqrt(rms_pe/n);
+ rms_pe = 100.0 * sqrt(rms_pe/n);
}
for (i = 0; i < n; ++i) {
