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Re: M_MAP tools
From: |
John W. Eaton |
Subject: |
Re: M_MAP tools |
Date: |
Wed, 19 Jul 2006 14:25:23 -0400 |
On 18-Jul-2006, David Bateman wrote:
| 1) Octave doesn't yet have private directorys, so you have to also do
| "addpath('m_map/private')"
And be sure that the names of the private functions don't overlap with
the names of other functions...
| 2) There seems to be an issue of logical indexing in private/mu_util.m
| where octave doesn't recognize a vector of 1's and 0's as logical
| indexing, where matlab does. This seems to be a subtile incompatiability
| between matlan and octave, though in the assignment to a logical array
| of a 1 or a 0 doesn't change the type, though in octave it does. Consider
|
|
| >> i = logical(ones(1,4))
|
| i =
|
| 1 1 1 1
|
| >> i(1) = 0
|
| i =
|
| 0 1 1 1
|
| >> whos i
| Name Size Bytes Class
|
| i 1x4 4 logical array
|
| Grand total is 4 elements using 4 bytes
|
| whereas in octave this gives
|
|
| octave:2> i = logical(ones(1,4))
| i =
|
| 1 1 1 1
|
| octave:3> i(1) = 0
| i =
|
| 0 1 1 1
|
| octave:4> whos i
|
| *** local user variables:
|
| Prot Name Size Bytes Class
| ==== ==== ==== ===== =====
| rwd i 1x4 32 double
|
| Total is 4 elements using 32 bytes
|
| John what do you want to do with this incompatiability? My solution in
| the context of m_map was to cast as a logical before using it. That is
| add the line
|
| indx = logical(indx)
|
| at line 109 of private/mu_util.m
Please see the following message:
https://www.cae.wisc.edu/pipermail/bug-octave/2006-July/000482.html
Thanks,
jwe