Hi
The the gcc on Redhat 7.2 with default C compiler configuration setting
CFLAGS="-g -O2" produces some worrying differences in output compared
to
CFLAGS="-g -Wall -pedantic"
The following differences were seen in graphical output from running
examples:
besselI
DIFFERENCE in example 4
DIFFERENCE in example 5
(1e+00 becomes 1e-00 in axis label)
--
co.intervals
DIFFERENCE in example 8
(third y-value in lowess curve different)!!!
--
dnbinom
DIFFERENCE in example 2
(contour line labels at different locations)
--
pbirthday
DIFFERENCE in example 1
(1e+00 becomes 1e-00 in axis label)
--
persp
DIFFERENCE in example 3
(order of drawing surface facets different)
####### Reproduction details
Differences were detected in graphics output using the graphicsQC
package (see http://www.stat.auckland.ac.nz/~paul/index.html) and ...
model.graphics(package="base", device="postscript",
format="pbm",
model.loc="model", verbose=TRUE)
... to produce output for CFLAGS="-g -O2" and ...
test.graphics(package="base", device="postscript",
format="pbm",
model.loc="model", test.loc="test",
verbose=TRUE)
... to produce output for CFLAGS="-g -Wall -pedantic"
Paul
--please do not edit the information below--
Version:
platform = i686-pc-linux-gnu
arch = i686
os = linux-gnu
system = i686, linux-gnu
status = beta
major = 1
minor = 8.0
year = 2003
month = 10
day = 07
language = R
Search Path:
.GlobalEnv, package:methods, package:ctest, package:mva,
package:modreg, package:nls, package:ts, package:lattice, package:grid,
package:graphicsQC, Autoloads, package:base
--
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
paul@stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/