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[Octave-bug-tracker] [bug #46080] Unexpected warning from textscan() whe
From: |
anonymous |
Subject: |
[Octave-bug-tracker] [bug #46080] Unexpected warning from textscan() when headerlines is 0 |
Date: |
Wed, 30 Sep 2015 15:47:27 +0000 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:40.0) Gecko/20100101 Firefox/40.0.2 Waterfox/40.0.2 |
URL:
<http://savannah.gnu.org/bugs/?46080>
Summary: Unexpected warning from textscan() when headerlines
is 0
Project: GNU Octave
Submitted by: None
Submitted on: Wed 30 Sep 2015 03:47:25 PM UTC
Category: Octave Function
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Inaccurate Result
Status: None
Assigned to: None
Originator Name: Ethan Biery
Originator Email: address@hidden
Open/Closed: Open
Discussion Lock: Any
Release: 4.0.0
Operating System: Microsoft Windows
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Details:
If the 'headerlines' property is used as an argument to the textscan()
function, and the value of 'headerlines' is 0, a warning is created:
debug> C=textscan(fid,'%f %f','headerlines',0,'delimiter',['\t' ' ' ',']);
warning: strread: unknown property 'headerlines'
warning: called from
strread at line 215 column 3
textscan at line 313 column 5
(This may be the case if the "0" is actually a variable computed elsewhere in
the code. The current workaround--having to check for a zero value, and
subsequently call textscan() without the headerlines argument--seems
inelegant).
The fix seems simple in textscan.m:
if (args{headerlines + 1} > 0)
## Beware of zero valued headerline, fskipl would skip to EOF
fskipl (fid, args{headerlines + 1});
##REMOVE line from here: args(headerlines:headerlines+1) = [];
st_pos = ftell (fid);
elseif (args{headerlines + 1} < 0)
warning ("textscan.m: negative headerline value ignored");
endif
##ADD line to here: args(headerlines:headerlines+1) = [];
This will clear out the headerlines value during the subsequent call to
strread (eliminating the warning), regardless of whether it's positive,
negative, or zero.
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?46080>
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- [Octave-bug-tracker] [bug #46080] Unexpected warning from textscan() when headerlines is 0,
anonymous <=