Hi,
I know this is not an answer to your immediate question but you may want
to consider the Prima toolkit and PDL::Graphics::Prima for interactive
image manipulation. It performs quite well for me.
That said, ages ago I used perlTk and converted my piddles to perl
arrays? immediately before plotting. I can dig up the code for you, if
you like. The performance was reasonable, I'd say.
Best wishes
Ingo
Am 28.01.2019 um 03:32 schrieb Craig DeForest:
I haven’t looked specifically at how to display images in PerlTk, but there’s
got to be a straightforward way to transfer the memory. Perl can access PDL
data directly as a string via the PDL::dataref method, which delivers a scalar
ref whose contents are the data in the PDL. Doesn’t PerlTk load the image into
memory before shipping it off to the display libraries?
On Jan 27, 2019, at 5:45 PM, Juan M Lorenzo <[email protected]> wrote:
Dear All,
I am using the power of piddles to read and manipulate data but I want
to display images in
PerlTk. Currently I generate images on the PNG device and later, read
them in via a PerlTk module for display.
Is there a way to access the png file in memory ( e.g. as a virtual Perl
filehandle in RAM) before it is written to disk?
Currently I have a working flow that allows me to display the final
image in PerlTk Canvas, but I would
like to redisplay new calculations conducted within PDL is a faster manner.
I have read through the PLplot subroutines and have not found a solution.
I have considered the 'mem' device in PDL. Perhaps I can manipulate a
buffered piddle in 'mem' into an image format
readable by directly in Tk?
Does anyone have any suggestions, other than reverting to Prima, or not
using PerlTk for interactive GUIs?
If you wish I can send you my code.
Best Regards,
gllore
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