On Aug 22, 2012 6:55 AM, "Owen Marschall" wrote:
Anyone know of an easy way to create a random symmetric matrix (more
specifically, a matrix whose entires are each picked from a standardGaussian
distribution)?
Note that 'A random symmetric matrix' is a contradiction in terms. A symmetric
matri
The other option is not to add them in the first place?
load 'stats/distribs'
(|: + ~: zeroTri ) >: zeroTri rnorm 5 5
0.346799 _1.221610.57274 0.556122 _0.329658
_1.22161 0.149955 _1.77435 _1.76668 0.831557
0.57274 _1.774350.77674 _0.0690683 _0.967551
0.556122 _1.76668 _0
You read my mind. I was thinking about this same problem tonight while at the
opera, and I couldn't think of any way to only divide the diagonals by sqrt(2)
a second time--without loops, of course. I don't quite yet understand why your
solution works, but I'm sure with enough staring and diction
If you have a matrix a of standard normal deviates, you can make it
symmetric with
asymm =: (+ |:) a
but what is the variance of the items of a?
The variance of values off the principal diagonal will be the sum of the
variance of two independent standard normal deviates. i.e. 2.
To return t
http://www.jsoftware.com/help/dictionary/d522.htm is the dictionary entry for
{: (Tail). The title of the page is given in the HTML source as
where it probably should say
{: Tail
It would be nice if it could be fixed, since I tend to have a lot of tabs up on
various dictionary pages,
First you have to find out th size of that structure, then use mema
to allocate that memory. Please refer to the chapter of dll of J user manual
for detail of mema and related verbs.
Втр, 21 Авг 2012, Emir Ustamujic писал(а):
> Hi, in an earlier response from Bill I learned that j uses memr to ac
Hi, in an earlier response from Bill I learned that j uses memr to access
structure members in gtk and that works fine. But I am wondering how we would
go about creating new instances of gtk structures, for example what would be
the J equivalent of : GdkColor color;
Thanks,
Emir
---
Ah, just what I needed. Thanks!
On Aug 21, 2012, at 1:06 PM, Ric Sherlock wrote:
> The primitive ( |: ) is transpose. E.g. :
>
> |: i. 3 4
> 0 4 8
> 1 5 9
> 2 6 10
> 3 7 11
> On Aug 22, 2012 6:55 AM, "Owen Marschall" wrote:
>
>> Anyone know of an easy way to create a random symmetric matri
The primitive ( |: ) is transpose. E.g. :
|: i. 3 4
0 4 8
1 5 9
2 6 10
3 7 11
On Aug 22, 2012 6:55 AM, "Owen Marschall" wrote:
> Anyone know of an easy way to create a random symmetric matrix (more
> specifically, a matrix whose entires are each picked from a standard
> Gaussian distributio
Anyone know of an easy way to create a random symmetric matrix (more
specifically, a matrix whose entires are each picked from a standard Gaussian
distribution)? I can start by doing
load 'stats'
R=:normalrand N N
but this is not symmetric, and I don't know of any way to symmetrize it without
I guess the line
require 'grid'
should also be placed inside conditional block.
Пнд, 20 Авг 2012, Henry Rich писал(а):
> Putting all that together, I come up with
>
>
> if. IFJ6 do. IFGTK =. -. IFJHS =. IFCONSOLE end.
> if. IFGTK *. -. IFJHS do.
> code for grid
> else.
> code for no grid
> en
Linda I'm not clear why you are prevented from installing in any other
folder than Program Files, can you explain in a bit more detail what
exactly you are installing and how, and what system you are installing
on?
I can say is that on my Windows 7 computer I've successfully tested
installing to f
Both of Ric's suggestions have not worked.
I am prevented from installing in any other folder at installation because
the only permitted place is Program Files. I did not think it would be a
good idea to move the folder after it was installed as I'm not sure what
other changes would be necessa
Hi Linda,
The J701a_setup.exe or J64-701a_setup.exe installers will *by default*
install J into the "Program Files" folder. This is the same as doing a
"System Install" using the minimal installers.
If you install J into the "Program Files" folder then you will need to
start J with Administrator p
I'm using Chrome. See William's Message Below.
This was why I reinstalled J. It now forces J701 to be in program files and
J701-user is in Owner.
I did change the J701con to run as administrator but nothing happened.
Plot is now good. I can't update jal.
Linda
-Original Message-
F
Thank you for the bug report, please locate the line
load 'gui/android'
or
require 'gui/android'
and delete/comment out the line as a temporary workaround.
Втр, 21 Авг 2012, William Szuch писал(а):
> Using j64-601 with Windows 7
>
> After the latest update I get the following error when loading
Using j64-601 with Windows 7
After the latest update I get the following error when loading plot:
load 'plot'
not found: C:\Users\Owner\j64-701\bin/gui/android/android
|file name error: script
| 0!:0 y[4!:55<'y'
Regards
Bill Szuch
-
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