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[Octave-bug-tracker] [bug #53211] detrend functionality missing for comp
From: |
anonymous |
Subject: |
[Octave-bug-tracker] [bug #53211] detrend functionality missing for complex values |
Date: |
Fri, 23 Feb 2018 15:24:03 -0500 (EST) |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/604.5.6 (KHTML, like Gecko) Version/11.0.3 Safari/604.5.6 |
URL:
<http://savannah.gnu.org/bugs/?53211>
Summary: detrend functionality missing for complex values
Project: GNU Octave
Submitted by: None
Submitted on: Fri 23 Feb 2018 08:24:02 PM UTC
Category: Octave Function
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Matlab Compatibility
Status: None
Assigned to: None
Originator Name: Hans Reiser
Originator Email: address@hidden
Open/Closed: Open
Discussion Lock: Any
Release: 4.2.1
Operating System: Any
_______________________________________________________
Details:
Matlab's detrend() function works fine for arrays of complex values, whereas
code working fine with Matlab fails in Octave with the error "detrend: first
input argument must be a real vector or matrix".
It seems to me that the function's actual functionality would be fine for
complex arguments as well, so the following patch that simply adjusts the
argument check seems to fix the problem and enhance Matlab compatibility:
--- /tmp/detrend.m 2018-02-23 21:18:07.000000000 +0100
+++ share/octave/4.2.1/m/signal/detrend.m 2018-02-23 21:17:55.000000000
+0100
@@ -39,7 +39,7 @@
function y = detrend (x, p = 1)
- if (nargin > 0 && isreal (x) && ndims (x) <= 2)
+ if (nargin > 0 && (iscomplex(x)||isreal (x)) && ndims (x) <= 2)
## Check p
if (ischar (p) && strcmpi (p, "constant"))
p = 0;
@@ -49,7 +49,7 @@
error ("detrend: second input argument must be 'constant', 'linear' or
a positive integer");
endif
else
- error ("detrend: first input argument must be a real vector or matrix");
+ error ("detrend: first input argument must be a real (or complex) vector
or matrix");
endif
[m, n] = size (x);
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