Pd-list July 2008

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111 participants
206 discussions

Re: [PD] smallest number from a stream of numbers
by Hans-Christoph Steiner 09 Jul '08

09 Jul '08

There is also [track_min] and [track_max] in the mapping lib. .hc On Jul 9, 2008, at 11:00 AM, Hans Roels wrote: > I don't think you need lists for this, just 2 objects [min] > [trigger] and an initial value. in attach is an example with a > random stream of numbers. > hans r > > At 21:47 8/07/2008, you wrote: >> Frank Barknecht wrote: >> > Hallo, >> > cyrille henry hat gesagt: // cyrille henry wrote: >> > >> >> Ben Carney a écrit : >> >>> Hello there list! >> >>> >> >>> pretty simple question I think, but I'm a bit stumped. >> >>> >> >>> I have a stream of numbers coming in from a flex sensor and I >> would love >> >>> to be able to grab the lowest number from x amount of numbers, >> every 30 >> >>> numbers or so. >> >>> >> >>> I looked through the [list minmax] example, but could not >> figure out how >> >>> to make it do it "live". >> >>> >> >> | >> >> [mapping/last_n 30] >> >> | >> >> [list minmax] >> >> | >> > >> > Or >> > >> > [list-lastx 30] >> > | >> > [list-minmax] >> > >> >> Or how about >> >> /\ >> [moses] \ >> | \ >> [trigger a a] >> >> with a handmade counter that resets moses every n'th time. >> >> eni >> >> _______________________________________________ >> Pd-list(a)iem.at mailing list >> UNSUBSCRIBE and account-management -> http://lists.puredata.info/ >> listinfo/pd-list<maximum-minimum.pd> > _______________________________________________ > Pd-list(a)iem.at mailing list > UNSUBSCRIBE and account-management -> http://lists.puredata.info/ > listinfo/pd-list ------------------------------------------------------------------------ ---- I spent 33 years and four months in active military service and during that period I spent most of my time as a high class muscle man for Big Business, for Wall Street and the bankers. - General Smedley Butler

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Re: [PD] compiling pd-extended ubuntu hardy amd64
by Sergi Lario 09 Jul '08

09 Jul '08

Hello list, Decided to watch the flags of the externals that gave me problems and a few others. I made the following changes and it worked. sll@sll-cube:/home/pd-extended/externals/*gem2pdp*$ vim Makefile.in Line: 16 CFLAGS = *-fPIC* -DPD -O2 -funroll-loops -fomit-frame-pointer -ffast-math \ sll@sll-cube:/home/pd-extended/externals/*miXed*$ vim Makefile.common Line: 119 CFLAGS = *-fPIC* $(WARN_CFLAGS) $(OPT_CFLAGS) $(DEFINES) $(INCLUDES) sll@sll-cube:/home/pd-extended/externals/*pmpd*/src$ vim makefile Line: 64 LINUXCFLAGS = *-fPIC* -DPD -O2 -funroll-loops -fomit-frame-pointer \ sll@sll-cube:/home/pd-extended/externals/*pidip*$ vim Makefile.in Line: 19 PDP_PIDIP_CFLAGS = $(MPEG4IP_CFLAGS) $(IMLIB_CFLAGS) \ -DPD -DX_DISPLAY_MISSING -O2 -funroll-loops -fomit-frame-pointer -ffast-math \ *-fPIC* -Wall -W -Wstrict-prototypes Line: 25 PDP_PIDIP_CPPFLAGS = $(MPEG4IP_CFLAGS) $(IMLIB_CFLAGS) \ -DPD -DX_DISPLAY_MISSING -O2 -funroll-loops -fomit-frame-pointer -ffast-math \ *-fPIC* -Wall -W -Wstrict-prototypes \ sll@sll-cube:/home/pd-extended/externals/pdvjtools$ vim *colorgrid*/Makefile Line: 13 LINUXCFLAGS = *-fPIC* -DPD -DUNIX -DICECAST -O2 -funroll-loops -fomit-frame-pointer \ sll@sll-cube:/home/pd-extended/externals/pdvjtools$ vim *pix_preview* /Makefile Line:12 GEM2PNM_CPPFLAGS = *-fPIC* -DPD -O2 -funroll-loops -fomit-frame-pointer -ffast-math \ sll@sll-cube:/home/pd-extended/externals/*pdp_opencv*$ vim Makefile Line: 9 CPPFLAGS = *-fPIC* -DPD -O2 -funroll-loops -fomit-frame-pointer -ffast-math \ sll@sll-cube:/home/pd-extended/externals/*pix_opencv*$ vim Makefile Line: 9 CPPFLAGS = *-fPIC* -DPD -O2 -funroll-loops -fomit-frame-pointer -ffast-math \ sll@sll-cube:/home/pd-extended/packages/linux_make$ sudo make install .... make[1]: Leaving directory `/home/pd-extended/packages' linux_make install succeeded! sll@sll-cube:/home/pd-extended/pd/bin$ ./pd About: Pd version 0.42-0test3 Then I need set paths and startup libs. And help files are not in the browser. Now I begin to see how it behaves. Be well modify these changes in the trunk, what do you think? Greetings, Sergi.

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mrpeach osc - pipelist question
by patrick 09 Jul '08

09 Jul '08

hi, i am using mrpeach osc external to talk to/from blender. it works fine, but not when using pipelist (routeOSC-help.pd): error: pipelist: no method for '/test' also the millisecond_delay is: -3.424e+12, but the testing application (a simple python script) is 0.5 sec. for now i am using only udpreceive plug into unpackOSC and finally routeOSC /test and it works fine, but what i am missing from pipelist? pat

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Re: [PD] smallest number from a stream of numbers
by Frank Barknecht 09 Jul '08

09 Jul '08

Hallo, Hans Roels hat gesagt: // Hans Roels wrote: > I don't think you need lists for this, just 2 > objects [min] [trigger] and an initial value. in > attach is an example with a random stream of numbers. That's the general approach to find min and max in a stream of numbers and it's internally used in [list-minmax] as well. But if you want to find "local" extrema, you have to do some more housekeeping, that's where [list-lastx] comes into play. Ciao -- Frank Barknecht _ ______footils.org__

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Re: [PD] vline~, vsnapshot~, etc.
by Matt Barber 09 Jul '08

09 Jul '08

> Date: Wed, 9 Jul 2008 09:00:51 +0200 > From: Frank Barknecht <fbar(a)footils.org> > Subject: Re: [PD] vline~, vsnapshot~, etc. > To: pd-list(a)iem.at > Message-ID: <20080709070050.GB5479(a)fliwatut.scifi> > Content-Type: text/plain; charset=us-ascii > > Hallo, > Matt Barber hat gesagt: // Matt Barber wrote: > >> What does the "v" in [vline~], [vsnapshot~], etc. mean? Is it also >> the same in the "vinlet" and "vexpr" object classes? > > I don't know vinlet, is this new? vexpr~ is definitely something else. > If I'm not mistaken, [inlet] and [inlet~] are members of the same class "vinlet," which has the two constructors vinlet_new and vinlet_newsig. Similarly but somewhat differently, all the expr/expr~/fexpr~ stuff is collected into a single set of vexp*.c files. I didn't mean to say "vexpr", and I guess expr has different classes underneath so it's not fair to say it's one object class -- but in both of them there's a "several objects collected here" kind of feel which made me wonder. Maybe this is all just a coincidence. I could see the "v" in "vinlet" standing for "visual" to distinguish it from the more generic "inlet" class. > vline~ and vsnaphot~ are variants of line~ rsp. snapshot~ that work > with so called "clock-delayed messages" to achieve higher timing > accuracy when receiving messages that originate from clocks, i.e. from > [metro], [delay], [pipe], ... > > This way you can schedule e.g. an envelope to start in the middle of a > signal "v"ector. > Thanks, this explanation makes a lot of sense -- I knew what they did, but not why they were called v____. Matt

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Re: [PD] XML-files
by Hans-Christoph Steiner 09 Jul '08

09 Jul '08

It's in SVN in externals/jasch_lib .hc On Jul 9, 2008, at 8:07 AM, brandt(a)subnet.at wrote: > Thank you so much - but where is it findable? I tried Pure data > external > repository withaou any sucess > > best regards markus > > > > > >> On Jul 7, 2008, at 9:52 AM, mescalinum(a)gmail.com wrote: >> >>> altern wrote: >>>> brandt(a)subnet.at(e)k dio: >>>> >>>>> How is it possible to make-XML files useable in Pd. >>>>> e.g for controlling >>>>> >>>> >>>> not sure what you are after but i am reading an XML file using >>>> python >>>> via pyext external and returning some data to PD >>>> >>> >>> or also using pdtcl (in svn) and the tDOM Tcl package >> >> There is also the detox external for directly reading XML into Pd. >> >> .hc >> >> >>> >>> _______________________________________________ >>> Pd-list(a)iem.at mailing list >>> UNSUBSCRIBE and account-management -> http://lists.puredata.info/ >>> listinfo/pd-list >> >> >> >> --------------------------------------------------------------------- >> --- >> ---- >> >> Computer science is no more related to the computer than astronomy is >> related to the telescope. -Edsger Dykstra >> >> >> >> _______________________________________________ >> Pd-list(a)iem.at mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list >> > ------------------------------------------------------------------------ ---- kill your television

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smallest number from a stream of numbers
by Ben Carney 09 Jul '08

09 Jul '08

Hello there list! pretty simple question I think, but I'm a bit stumped. I have a stream of numbers coming in from a flex sensor and I would love to be able to grab the lowest number from x amount of numbers, every 30 numbers or so. I looked through the [list minmax] example, but could not figure out how to make it do it "live". much thanks in advance, -- Ben C.

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PDP and/or GEM for live video processing
by Spencer Russell 09 Jul '08

09 Jul '08

I recently convinced the video guy for a play I'm sound designing to use PD instead of Max/MSP/Jitter so that we can work together and run the audio and video off of the same laptop. The problem is that I don't have a lot of experience doing video in PD or using PD on OSX, but I've been doing PD on linux for live audio processing for about 4 years. He's done about a month's worth of research into using Jitter, so I want to make the transition as easy as possible, and perhaps win another PD convert. Mostly what we need to do is record video with background subtraction, and then play multiple layers of it back with some effects so that the actor can interact with himself. Is it more computationally efficient to use straight PDP, straight GEM, or some combination? I'd like to use GEM's [pix_video] object, because it can talk to the OSX video system, but I'd imagine the PDP video processing stuff is more efficient, as it's not concerned with texturing a rectangle and displaying it in 3D. We're running the show on a Macbook pro, so it's hardware accelerated. I've got the GEM<->PDP conversion figured out in both directions using [pix_2pdp] and [pdp2gem]. Any OSX pitfalls I should be aware of? I don't have access to a macbook pro myself, so I can't test things before I try to get it working on his machine. Should I expect any problems from GEM display or from the [pdp_glx] output? thanks! -spencer

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is xsample library included in Pd-0.40.3-extended-rc3-ubuntu-hardy-i386?
by Io no 09 Jul '08

09 Jul '08

Hi all in the list, I've just tried to use the xplay~ object in Pd-0.40.3-extended-rc3-ubuntu-hardy-i386 I tried to run pd with the command: $ pd -lib xsample the puredata console say to me: xsample: can't load library The strange thing is that there is the documentation about xsample and xplay~ inside the package: $dpkg -L pd-extended | grep xsample /usr/lib/pd/doc/manuals/xsample /usr/lib/pd/doc/manuals/xsample/gpl.txt /usr/lib/pd/doc/manuals/xsample/readme.txt /usr/lib/pd/doc/manuals/xsample/license.txt /usr/lib/pd/extra/rradical/rrad.minipli-xsample.pd $ dpkg -L pd-extended | grep xplay /usr/lib/pd/doc/5.reference/xplay~-help.pd So seem that the xsample library is not included in the package, whereas the xsample documentation is included. I'm right? Or I make some errors loading the library? Thanks for any feedback Fabio

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Re: [PD] better tabread4~
by Matt Barber 09 Jul '08

09 Jul '08

Cyrille, Could you try this optimization for the tabread6c~ I threw together? It uses the same general notation as the tab4c~ suite: t_sample a3plusa4plusa5 = 0.25f*c+0.125f*e-0.3333333f*d-0.04166667*a; t_sample fminusa = f-a; t_sample eminusb = e-b; t_sample dminusc = d-c; a5 = 0.2083333f*((fminusa-5.f*eminusb+10.f*dminusc)); a4 = 2.6666667f*eminusb-0.5f*fminusa-5.5f*dminusc-a3plusa4plusa5; a3 = a3plusa4plusa5-a4-a5; a2 = 0.6666667f*(d+b)-0.04166667f*(a+e)-1.25f*c; a1 = 0.6666667f*(d-b)+0.08333333f*(a-e); a0 = c; *out++ = ((((a5 * frac + a4 ) * frac + a3) * frac + a2) * frac + a1) * frac + a0; I've tested it and I think it works... I count 20 *'s and 25 +'s = 45 ops vs. 31 *'s, and 27 +'s = 58 ops (if the fractions were written out as decimals). Thanks, Matt > Date: Tue, 08 Jul 2008 18:35:51 +0200 > From: cyrille henry <cyrille.henry(a)la-kitchen.fr> > Subject: Re: [PD] better tabread4~ > To: Charles Henry <czhenry(a)gmail.com> > Cc: pd-list(a)iem.at > Message-ID: <48739767.3050400(a)la-kitchen.fr> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > hello Chuck, > > i tested this. (and commited) > i think tabread6c~ is a bit better than tabread4c~. but differences are more smaller > > thx > > Cyrille > > > Charles Henry a ?crit : >> On Sat, Jun 28, 2008 at 6:43 AM, cyrille henry >> <cyrille.henry(a)la-kitchen.fr> wrote: >> >> >> The coefficients used in this scheme are >> >> a0= Y[0] >> a1= 1/12*Y[-2] - 2/3*Y[-1] + 2/3*Y[1] - 1/12*Y[2] >> a2= -1/24*Y[-2] + 2/3*Y[-1] - 5/4*Y[0] + 2/3*Y[1] - 1/24*Y[2] >> a3= -3/8*Y[-2] + 13/8*Y[-1] - 35/12*Y[0] + 11/4*Y[1] - 11/8*Y[2] + 7/24*Y[3] >> a4= 13/24*Y[-2] - 8/3*Y[-1] + 21/4*Y[0] - 31/6*Y[1] + 61/24*Y[2] - 1/2*Y[3] >> a5= -5/24*Y[-2] + 25/24*y[-1] - 25/12*Y[0] + 25/12*Y[1] - 25/24*Y[2] + 5/24*Y[3] >>

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Pd-list July 2008