From owner-bug-octave at bevo dot che dot wisc dot edu  Tue Sep 17 11:44:35 1996
From: "Pascal A. Dupuis" <dupuis at lei dot ucl dot ac dot be>
To: bug-octave at che dot utexas dot edu
Date: Tue, 17 Sep 1996 18:44:18 +0200

To: bug-octave at che dot utexas dot edu
Subject: output of filter

Bug report for Octave 1.1.1 configured for i486-unknown-linux

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

  Under octave, the output of filter(B,A,u), if u is a column vector, is a row vector. It would be better to have  size(output)== size(input)

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

   u=(1:100)'; y=filter([1], [1],u); 
   size(u)
   size(y)

Fix:
---
   y = filter(B,A,u);
   if exist("OCTAVE_VERSION")
      if size(y) ~= size(u), y=y'; end
   end

 

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

uname output:     Linux pc-dupuis 2.0.20 #95 Mon Sep 16 17:30:24 MET DST 1996 i486
Fortran compiler: f77
FFLAGS:           -O2 -m486 -ffast-math -fomit-frame-pointer -pipe
F2C:              
F2CFLAGS:         
FLIBS:            -lf2c -L/usr/lib/gcc-lib/i486-linux/2.7.2 -L/usr/i486-linux/lib -lgcc
C compiler:       gcc
CFLAGS:           -DHAVE_CONFIG_H -mieee-fp -O2 -m486 -ffast-math -fomit-frame-pointer -pipe
C++ compiler:     c++
CXXFLAGS:         -DHAVE_CONFIG_H  -fno-implicit-templates -mieee-fp -O2 -m486 -pipe -fno-for-scope
LDFLAGS:          -g
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 -DIEEE_LITTLE_ENDIAN=1 -DHAVE_ALLOCA_H=1
  -DHAVE_ALLOCA=1 -DF77_APPEND_UNDERSCORE=1 -DSTDC_HEADERS=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_SYS_UTSNAME_H=1 -DHAVE_SYS_TIME_H=1
  -DHAVE_SYS_FCNTL_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_STRCASECMP=1
  -DHAVE_STRNCASECMP=1 -DHAVE_STRERROR=1 -DHAVE_ATEXIT=1 -DHAVE_ON_EXIT=1
  -DHAVE_TEMPNAM=1 -DHAVE_MEMMOVE=1 -DHAVE_PUTENV=1 -DHAVE_GETTIMEOFDAY=1
  -DHAVE_GETRUSAGE=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_LGAMMA=1 -DSIGNGAM_DECLARED=1 -DRETSIGTYPE=void
  -DSYS_SIGLIST_DECLARED=1 -DHAVE_SYS_SIGLIST=1

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/i486-unknown-linux//:/usr/local/lib/octave/site/m//:/usr/local/lib/octave/1.1.1/oct/i486-unknown-linux//:/usr/local/lib/octave/1.1.1/m//:/ns1/matlab//:/home/dupuis/matlab//:/dosd/home/dupuis/matlab//:/dosd/winmat4//"
  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"