Hi,
Thanks. I installed Prima and it is a good job. When will be
available for pdl, it will be a great step up. Thanks for developing
the plot library for Prima.
On 1/23/2012 2:30 PM, David Mertens wrote:
Fabio,
For animations or drawing, I believe the only thing that will give
you what you need is a GUI app. For that, you should check out
GTK+, wxWidgets, or Prima. The first two have Perl bindings but
can be a headache to install. The third is cross-platform and is
distributed on CPAN, so if you have the X11 development libraries
installed, it should Just Work.
Bonus for using Prima: I'll be releasing a plotting library for it
in the coming month. :-D
David
On Mon, Jan 23, 2012 at 3:38 AM, Fabio
D'Alfonso <[email protected]>
wrote:
Hi,
thanks for you tip.
I would really be able to write on screen, showing the
pencil progress, so this is probably not the way I would. I
am starting to ignore for a while the graphics as pdl brings
some interesting feature to perl apart of it.
As I wrote before, these technologies PGPLOT and somehow
PlPlot are quite good for paper production where e m c (in
E=MC^2) are more than three letters. They satisfy the need
to illustrate concepts important for themselves.
In a more ordinary use of scientific software, the
interaction in already a must have. PGPLOT has many years;
probably at that time was a quite advanced solution, but
meanwhile many things changed.
I have not the skill to make something, but I think is the
real area to recover.
On 1/23/2012 2:32 AM, David Mertens
wrote:
Hey Fabio -
There are differences between how the different
plotting libraries handle various plotting commands.
At one point, a developer had hoped to reconcile this
with a single interface, but he ran out of steam
before anything actually developed. I think that would
have been PDL::Graphics2D, but my memory is fuzzy, and
it doesn't much matter because it never happened.
If you want to load a color background and plot to it
using plplot, see these slides: http://www.slideshare.net/dcmertens/p-lplot-talk
and click through to the section entitled "Using the
mem Device". It starts at 32 minutes into the talk and
runs for about two minutes. Unless zentara has put it
into a chapter, this is the best documentation on how
to use the mem device with PLplot, which can achieve
exactly what you're looking for.
David
On Sun, Jan 22, 2012 at 3:53
PM, Fabio D'Alfonso <[email protected]>
wrote:
Hi,
I am finding a bit peculiar that graphics
command are bounded to technologies.
PlPlot has the xyplot while PGPLOT has commands
like imag.
The result is that what is suitable to be shown
on one is not for the other as the vectorization
acts differently. I think that missing the
ability to show color backgrounds can be a
little outdated.
I am probably missing something.
How could I load a color background on plplot
and then write on it?
I am grateful to all developing PDL. I only
think that B/W today is about using the Nokia
6110.
Fabio D'Alfonso
'Enabling Business Through IT'
fax: +39.06.874.599.581
BlackBerry® Wireless Enabled Address.
* Hidden numbers are automatically
rejected by the phone
On 1/22/2012 10:31 PM, Tim Haines wrote:
Fabio,
I have heard about a version of PGPLOT
that implements rgbi(), but, as Matt also
mentioned, I have never found it either.
For programmatically manipulating images,
I found ImageMagick (http://www.imagemagick.org/script/index.php)
and its Perl bindings PerlMagick to be
both powerful and exceptionally simple to
use. Due to PDL's reliance upon PGPLOT as
its primary graphics library, I only use
it to manipulate greyscale images.
However, I do believe that is all about to
change in PDL 4.10 with the addition of
PLPLOT and Prima. However, I shall let
others who are much more familiar with
those extensions describe their utility.
Thanks.
- Tim
---------- Forwarded message ----------
From: Matthew Kenworthy <[email protected]>
To: [email protected]
Cc: "[email protected]"
<[email protected]>
Date: Sun, 22 Jan 2012 21:07:06 +0100
Subject: Re: [Perldl] PGPLOT rgbi called,
but RGB support is not present. Using
grayscale instead.
Hi Fabio,
I encountered this problem before,
and there's some version of PGPLOT
floating out there that does implement
it, but I never seem to find it again...
I *think* Karl Glazebrook got one
version of it working some time ago, but
my memory's rusty on the matter.
Matt
---------- Forwarded message ----------
From: Fabio D'Alfonso <[email protected]>
To: "[email protected]"
<[email protected]>
Cc:
Date: Sun, 22 Jan 2012 19:31:44 +0100
Subject: [Perldl] PGPLOT rgbi called, but
RGB support is not present. Using
grayscale instead.
Hi,
I get this message trying to display a jpg
image.
I found several results on Google about
this but I wound understand the current
state of the thing.
I got this using rim. Is
there a solution or a workaround?
Thansk
--
Fabio D'Alfonso
'Enabling Business Through IT'
cell. +39.348.059.40.22
***
web: www.fabiodalfonso.com
<http://www.fabiodalfonso.com/
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