[Octave-bug-tracker] [bug #61473] unexpected results from eq

[Liang Tang]

URL:
  <https://savannah.gnu.org/bugs/?61473>

                 Summary: unexpected results from eq
                 Project: GNU Octave
            Submitted by: lt1234
            Submitted on: Sat 13 Nov 2021 05:02:06 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: kt1234
        Originator Email: 
             Open/Closed: Open
                 Release: 6.3.0
         Discussion Lock: Any
        Operating System: Microsoft Windows

    _______________________________________________________

Details:

I got unexpected results with a csv downloaded from NHTSA web site of US DOT
when I tried to detect 0 in column 18.  I truncated the original large data to
a small segment just to show the issue that I had seen.  I expect to have the
same result from eq and isequal.   Thanks.  

It is a 3-line code and the csv is also uploaded.  

x=csv2cell('eq_bug.csv'); 
mm=18; param0=cell(size(x,1),1); param0(:)=0;   ind_eq 
=find(cell2mat(cellfun(@eq,      x(:, mm), param0, 'UniformOutput' ,
false))==1);  x(ind_eq,  18) 
mm=18; param0=cell(size(x,1),1); param0(:)=0;  
ind_iseq=find(cell2mat(cellfun(@isequal, x(:, mm), param0, 'UniformOutput' ,
false))==1);  x(ind_iseq,18) 

The command window outputs are: 

>> mm=18; param0=cell(size(x,1),1); param0(:)=0;   ind_eq 
=find(cell2mat(cellfun(@eq,      x(:, mm), p
aram0, 'UniformOutput' , false))==1);  x(ind_eq,  18)
ans =
{
  [1,1] = 69000
  [2,1] = 156121
}

>> mm=18; param0=cell(size(x,1),1); param0(:)=0;  
ind_iseq=find(cell2mat(cellfun(@isequal, x(:, mm), p
aram0, 'UniformOutput' , false))==1);  x(ind_iseq,18)
ans =
{
  [1,1] = 0
  [2,1] = 0
}  



    _______________________________________________________

File Attachments:


-------------------------------------------------------
Date: Sat 13 Nov 2021 05:02:06 PM UTC  Name: eq_bug.csv  Size: 135KiB   By:
lt1234

<http://savannah.gnu.org/bugs/download.php?file_id=52268>

    _______________________________________________________

Reply to this item at:

  <https://savannah.gnu.org/bugs/?61473>

_______________________________________________
  Message sent via Savannah
  https://savannah.gnu.org/