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be a little outdated.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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