charting libraries

Are there any charting libraries for LW or OpenGL that can be used with LW?

I'm looking for stock charts, including candlesticks.

	Thanks, Joel

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(LispHUG) WebCams... ...and JPEG Output Files...

Greetings to the List...

I mentioned a bit ago that I was starting to work toward embedding a 
webcam into a LispWorks application.

I quickly discovered that there really is no easily deciphered 
documentation in the WIN32 world on how to do that.

After some trial-and-error wandering through the various branch 
paths, I have the webcam now embedded and running stably, reliably, 
and fluidly with only WIN32 calls in our delivered real-time livescan 
fingerprinting system.

To embed a webcam into a Lisp/CAPI application is really quite simple 
once you figure it out and get things straight, though there are some 
interesting (a.k.a irritating :) pitfalls here and there.

Please contact me if anyone ever needs that sort of thing - a 
real-time streaming video webcam in Lisp Space - and I will walk you 
through it.


Also, a quick question:    Will gp:write-external-image &| Friends 
create an external .JPF file?   Or, will CAPI really only create a 
..BMP file under WIN32??

If CAPI will not happily create a .JPG, is there a graceful way to do 
that from inside Lisp???


I appreciate any comments.

Regards to the List -

Jack Harper
Secure Ouitcomes Inc
Evergreen, Colorado USA





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Re: (LispHUG) WebCams... ...and JPEG Output Files...

At 01:18 PM 1/13/2014, Edi Weitz wrote:
>On Mon, Jan 13, 2014 at 9:01 PM, Jack Harper 
><jharper@secureoutcomes.net> wrote:
> >
> > Also, a quick question:    Will gp:write-external-image &| 
> Friends create an
> > external .JPF file?   Or, will CAPI really only create a .BMP file under
> > WIN32??
>
>
>Hi Jack,
>
>You can create and save images in several formats, see for example
>here: http://weitz.de/mandelbrot/#image



Guten Abend Edi -

Did you have to build your own JPG output function from scratch - or, 
were you able to use something already existing??

I ran the Mandelbrot.exe and it is very nice indeed!

Regards,

Jack Harper
Secure Outcomes Inc
Evergreen, Colorado USA



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Re: (LispHUG) WebCams... ...and JPEG Output Files...

I didn't have to do anything.  The user selects a file name to write
to (using CAPI:PROMPT-FOR-FILE which in my case offers "PNG", "JPG",
"TIFF" and "BMP" as filters) and then I just do

          (externalize-and-write-image pane image file-name
                                       :if-exists :supersede
                                       ;; only needed for JPEG,
otherwise ignored
                                       :quality 100)

where FILE-NAME is what was returned by PROMPT-FOR-FILE and PANE is
the output pane.  LispWorks does the rest automatically, including
figuring out what to do based on the file's suffix.




On Mon, Jan 13, 2014 at 10:08 PM, Jack Harper
<jharper@secureoutcomes.net> wrote:
> At 01:18 PM 1/13/2014, Edi Weitz wrote:
>>
>> On Mon, Jan 13, 2014 at 9:01 PM, Jack Harper <jharper@secureoutcomes.net>
>> wrote:
>> >
>> > Also, a quick question:    Will gp:write-external-image &| Friends
>> > create an
>> > external .JPF file?   Or, will CAPI really only create a .BMP file under
>> > WIN32??
>>
>>
>> Hi Jack,
>>
>> You can create and save images in several formats, see for example
>> here: http://weitz.de/mandelbrot/#image
>
>
>
>
> Guten Abend Edi -
>
> Did you have to build your own JPG output function from scratch - or, were
> you able to use something already existing??
>
> I ran the Mandelbrot.exe and it is very nice indeed!
>
> Regards,
>
> Jack Harper
> Secure Outcomes Inc
> Evergreen, Colorado USA
>
>
>

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Re: (LispHUG) WebCams... ...and JPEG Output Files...

Here it is, BTW:
http://www.lispworks.com/documentation/lw61/CAPRM/html/capiref-540.htm

You need LW 6.1 or higher, though.

On Mon, Jan 13, 2014 at 10:32 PM, Edi Weitz <edi@agharta.de> wrote:
> I didn't have to do anything.  The user selects a file name to write
> to (using CAPI:PROMPT-FOR-FILE which in my case offers "PNG", "JPG",
> "TIFF" and "BMP" as filters) and then I just do
>
>           (externalize-and-write-image pane image file-name
>                                        :if-exists :supersede
>                                        ;; only needed for JPEG,
> otherwise ignored
>                                        :quality 100)
>
> where FILE-NAME is what was returned by PROMPT-FOR-FILE and PANE is
> the output pane.  LispWorks does the rest automatically, including
> figuring out what to do based on the file's suffix.
>
>
>
>
> On Mon, Jan 13, 2014 at 10:08 PM, Jack Harper
> <jharper@secureoutcomes.net> wrote:
>> At 01:18 PM 1/13/2014, Edi Weitz wrote:
>>>
>>> On Mon, Jan 13, 2014 at 9:01 PM, Jack Harper <jharper@secureoutcomes.net>
>>> wrote:
>>> >
>>> > Also, a quick question:    Will gp:write-external-image &| Friends
>>> > create an
>>> > external .JPF file?   Or, will CAPI really only create a .BMP file under
>>> > WIN32??
>>>
>>>
>>> Hi Jack,
>>>
>>> You can create and save images in several formats, see for example
>>> here: http://weitz.de/mandelbrot/#image
>>
>>
>>
>>
>> Guten Abend Edi -
>>
>> Did you have to build your own JPG output function from scratch - or, were
>> you able to use something already existing??
>>
>> I ran the Mandelbrot.exe and it is very nice indeed!
>>
>> Regards,
>>
>> Jack Harper
>> Secure Outcomes Inc
>> Evergreen, Colorado USA
>>
>>
>>

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