From bug-octave-request at bevo dot che dot wisc dot edu Wed Sep 30 01:52:06 1998 Subject: Unidentified subject! From: Ben Kao To: bkao at ai dot uic dot edu, bug-octave@bevo.che.wisc.edu Date: Wed, 30 Sep 1998 02:19:36 -0500 To: bug-octave at bevo dot che dot wisc dot edu Cc: bkao at ai dot uic dot edu Subject: matrix indexing bug? Bug report for Octave 2.0.13 configured for i686-pc-linux-gnulibc1 Description: ----------- Octave 2.0.13: octave:14> a(1) = 1 a = 1 octave:15> a(2) = 2 a = 1 2 Matlab 5: >> a(1) = 1 a = 1 >> a(2) = 2 a = 1 2 As you can see the matrix grows in a different direction. Is this a bug? At least this seems to be an inconsistency. Repeat-By: --------- * Please replace this item with a description of the sequence of events that causes the problem to occur. Fix: --- If a matrix is explicitly defined, (i.e. matrix(x,y) = ...) there is no problem since we know x denotes column number and y denotes row number. However, if the matrix is one dimensional (i.e. matrix(x)) then although it is more or less arbitrary whether this is a row or column matrix, it is ambiguous _when_the_matrix_is_first_defined_. Thus there should be (probably is) a rule or convention that addresses this matter. I noticed that 2.0.9 and 2.0.13 are consistent with each other at least. Has Matlab always done it the other way? - ben bkao at ai dot uic dot edu (weekend signal processor) (i.e. watchin' tv) Configuration (please do not edit this section): ----------------------------------------------- uname output: Linux laslo 2.0.30 #9 Tue Jan 6 18:16:04 WAT 1998 i686 unknown configure opts: Fortran compiler: g77 FFLAGS: -O F2C: F2CFLAGS: FLIBS: -lf2c -lm -L/usr/lib/gcc-lib/i486-unknown-linux-gnulibc1/2.7.2.3 -L/usr/i486-unknown-linux-gnulibc1/lib -lm CPPFLAGS: INCFLAGS: -I/usr/local/include -I/usr/local/include/octave-2.0.13 C compiler: gcc, version 2.7.2.3 CFLAGS: -DHAVE_CONFIG_H -mieee-fp -g -O2 -Wall CPICFLAG: -fPIC C++ compiler: c++, version 2.7.2.3 CXXFLAGS: -DHAVE_CONFIG_H -mieee-fp -fno-rtti -fno-implicit-templates -g -O2 -Wall CXXPICFLAG: -fPIC LDFLAGS: -g LIBFLAGS: -L/usr/local/lib/octave-2.0.13 RLD_FLAG: -Xlinker -rpath -Xlinker /usr/local/lib/octave-2.0.13 TERMLIBS: -lncurses LIBS: LEXLIB: LIBPLPLOT: LIBDLFCN: DEFS: -DOCTAVE_SOURCE=1 -DSEPCHAR=':' -DSEPCHAR_STR=":" -DUSE_READLINE=1 -DF77_APPEND_UNDERSCORE=1 -DSIZEOF_SHORT=2 -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1 -DSTDC_HEADERS=1 -DHAVE_DIRENT_H=1 -DTIME_WITH_SYS_TIME=1 -DHAVE_SYS_WAIT_H=1 -DHAVE_ASSERT_H=1 -DHAVE_CURSES_H=1 -DHAVE_DLFCN_H=1 -DHAVE_FCNTL_H=1 -DHAVE_FLOAT_H=1 -DHAVE_FNMATCH_H=1 -DHAVE_GLOB_H=1 -DHAVE_GRP_H=1 -DHAVE_LIMITS_H=1 -DHAVE_MEMORY_H=1 -DHAVE_NAN_H=1 -DHAVE_PWD_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_SYS_PARAM_H=1 -DHAVE_SYS_RESOURCE_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_SYS_TIME_H=1 -DHAVE_SYS_TIMES_H=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_UTSNAME_H=1 -DHAVE_TERMCAP_H=1 -DHAVE_TERMIO_H=1 -DHAVE_TERMIOS_H=1 -DHAVE_UNISTD_H=1 -DHAVE_VARARGS_H=1 -DHAVE_FNMATCH=1 -DHAVE_GLOB=1 -DHAVE_ATEXIT=1 -DHAVE_BCOPY=1 -DHAVE_BZERO=1 -DHAVE_DUP2=1 -DHAVE_ENDGRENT=1 -DHAVE_ENDPWENT=1 -DHAVE_EXECVP=1 -DHAVE_FCNTL=1 -DHAVE_FORK=1 -DHAVE_GETCWD=1 -DHAVE_GETEGID=1 -DHAVE_GETEUID=1 -DHAVE_GETGID=1 -DHAVE_GETGRENT=1 -DHAVE_GETGRGID=1 -DHAVE_GETGRNAM=1 -DHAVE_GETHOSTNAME=1 -DHAVE_GETPGRP=1 -DHAVE_GETPID=1 -DHAVE_GETPPID=1 -DHAVE_GETPWENT=1 -DHAVE_GETPWNAM=1 -DHAVE_GETPWUID=1 -DHAVE_GETTIMEOFDAY=1 -DHAVE_GETUID=1 -DHAVE_GETWD=1 -DHAVE_LSTAT=1 -DHAVE_MEMMOVE=1 -DHAVE_MKDIR=1 -DHAVE_MKFIFO=1 -DHAVE_ON_EXIT=1 -DHAVE_PIPE=1 -DHAVE_PUTENV=1 -DHAVE_RENAME=1 -DHAVE_RINDEX=1 -DHAVE_RMDIR=1 -DHAVE_SETGRENT=1 -DHAVE_SETPWENT=1 -DHAVE_SETVBUF=1 -DHAVE_SIGACTION=1 -DHAVE_SIGPENDING=1 -DHAVE_SIGPROCMASK=1 -DHAVE_SIGSUSPEND=1 -DHAVE_STAT=1 -DHAVE_STRCASECMP=1 -DHAVE_STRDUP=1 -DHAVE_STRERROR=1 -DHAVE_STRNCASECMP=1 -DHAVE_TEMPNAM=1 -DHAVE_UMASK=1 -DHAVE_UNLINK=1 -DHAVE_USLEEP=1 -DHAVE_VFPRINTF=1 -DHAVE_VSPRINTF=1 -DHAVE_WAITPID=1 -DHAVE_PROGRAM_INVOCATION_NAME=1 -DHAVE_LIBDL=1 -DHAVE_DLOPEN=1 -DHAVE_DLSYM=1 -DHAVE_DLERROR=1 -DHAVE_DLCLOSE=1 -DWITH_DL=1 -DWITH_DYNAMIC_LINKING=1 -DHAVE_LIBM=1 -DHAVE_FINITE=1 -DHAVE_ISNAN=1 -DHAVE_ISINF=1 -DHAVE_ACOSH=1 -DHAVE_ASINH=1 -DHAVE_ATANH=1 -DHAVE_ERF=1 -DHAVE_ERFC=1 -DHAVE_ST_BLKSIZE=1 -DHAVE_ST_BLOCKS=1 -DHAVE_ST_RDEV=1 -DHAVE_TZNAME=1 -DHAVE_GR_PASSWD=1 -DRETSIGTYPE=void -DSYS_SIGLIST_DECLARED=1 -DHAVE_SYS_SIGLIST=1 -DHAVE_POSIX_SIGNALS=1 -DHAVE_GETRUSAGE=1 -DHAVE_TIMES=1