From owner-bug-octave at bevo dot che dot wisc dot edu  Wed Nov 29 17:53:31 1995
Subject: filter command
From: Carl Swanson <carl at iris dot mb dot ca>
To: bug-octave at che dot utexas dot edu
Date: Wed, 29 Nov 95 17:51:27 CST

Bug report for Octave 1.1.1 configured for sparc-sun-sunos4.1.2

Description:
-----------

Octave 1.1.1 / MATLAB mismatch on filter fcn
   Matlab returns vector type that matches X input vector type
   Octave always returns row vector.

Repeat-By:
---------

==============================================================
Octave 1.1.1:
-------------

case 1 row vector X: filter([1 1 1 1],[1],[1 0 0 0])
ans =
 
  1  1  1  1
 
case 2 col vector X:  filter([1 1 1 1],[1],[1 0 0 0]')
ans =
 
  1  1  1  1

==============================================================

Where as MATLAB for windows ver 4.2b 

gives a column vector result for case 2.


Configuration (please do not edit this section):
-----------------------------------------------

uname output:     SunOS ruth 4.1.3_U1 9 sun4m
Fortran compiler: f77
FFLAGS:           -O
F2C:              
F2CFLAGS:         
FLIBS:            -u _MAIN_ -L/usr/lang/SC1.0/cg87 -L/usr/lang/SC1.0 -lF77
C compiler:       gcc
CFLAGS:           -DHAVE_CONFIG_H  -O
C++ compiler:     c++
CXXFLAGS:         -DHAVE_CONFIG_H  -fno-implicit-templates  -O
LDFLAGS:          -static
DEFS:

  -DOCTAVE_SOURCE=1 -DSEPCHAR=':' -DSEPCHAR_STR=: -DNPSOL_MISSING=1
  -DQPSOL_MISSING=1 -DFSQP_MISSING=1 -DHAVE_STRFTIME=1 -DSIZEOF_SHORT=2
  -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DWORDS_BIGENDIAN=1 -DIEEE_BIG_ENDIAN=1
  -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1 -DF77_APPEND_UNDERSCORE=1
  -DHAVE_ASSERT_H=1 -DHAVE_FLOAT_H=1 -DHAVE_LIMITS_H=1 -DHAVE_MEMORY_H=1
  -DHAVE_PWD_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_VARARGS_H=1
  -DHAVE_UNISTD_H=1 -DHAVE_FLOATINGPOINT_H=1 -DHAVE_SYS_UTSNAME_H=1
  -DHAVE_SYS_TIME_H=1 -DHAVE_SYS_FCNTL_H=1 -DHAVE_SYS_TTOLD_H=1
  -DHAVE_SYS_RESOURCE_H=1 -DHAVE_DIRENT_H=1 -DTIME_WITH_SYS_TIME=1
  -DHAVE_TERMIOS_H=1 -DHAVE_SETVBUF=1 -DHAVE_GETCWD=1
  -DHAVE_GETHOSTNAME=1 -DHAVE_BZERO=1 -DHAVE_BCOPY=1 -DHAVE_RINDEX=1
  -DHAVE_VFPRINTF=1 -DHAVE_VSPRINTF=1 -DHAVE_STRICMP=1 -DHAVE_STRNICMP=1
  -DHAVE_STRCASECMP=1 -DHAVE_STRNCASECMP=1 -DHAVE_ON_EXIT=1
  -DHAVE_TEMPNAM=1 -DHAVE_PUTENV=1 -DHAVE_GETTIMEOFDAY=1
  -DHAVE_GETRUSAGE=1 -DHAVE_LIBM=1 -DHAVE_FINITE=1 -DHAVE_ISNAN=1
  -DHAVE_ISINF=1 -DHAVE_INFINITY=1 -DHAVE_QUIET_NAN=1 -DH

User-preferences (please do not edit this section):
--------------------------------------------------

  EDITOR = "vi"
  IMAGEPATH = ".:/usr/local/lib/octave/1.1.1/imagelib//"
  INFO_FILE = "/usr/local/info/octave.info"
  LOADPATH = ".:/usr/local/lib/octave/site/oct/sparc-sun-sunos4.1.2//:/usr/local/lib/octave/site/m//:/usr/local/lib/octave/1.1.1/oct/sparc-sun-sunos4.1.2//:/usr/local/lib/octave/1.1.1/m//"
  OCTAVE_VERSION = "1.1.1"
  PAGER = "less -e"
  PS1 = "\\s:\\#> "
  PS2 = "> "
  automatic_replot = "false"
  whitespace_in_literal_matrix = ""
  default_save_format = "ascii"
  do_fortran_indexing = "false"
  empty_list_elements_ok = "warn"
  eps = 2.22045e-16
  gnuplot_binary = "gnuplot"
  ignore_function_time_stamp = "system"
  implicit_str_to_num_ok = "false"
  ok_to_lose_imaginary_part = "warn"
  output_max_field_width = 10
  output_precision = 5
  page_screen_output = "true"
  prefer_column_vectors = "true"
  prefer_zero_one_indexing = "false"
  print_answer_id_name = "true"
  print_empty_dimensions = "true"
  propagate_empty_matrices = "true"
  resize_on_range_error = "true"
  return_last_computed_value = "false"
  save_precision = 17
  silent_functions = "false"
  split_long_rows = "true"
  treat_neg_dim_as_zero = "false"
  warn_assign_as_truth_value = "true"
  warn_comma_in_global_decl = "true"
  warn_divide_by_zero = "true"