Pd-list April 2018

pd-list@lists.iem.at

62 participants
74 discussions

Re: [PD] [PD-announce] ofelia v1.0.8 released
by Zack Lee 29 Apr '18

29 Apr '18

Hi, Oliver. I just made some changes to [ofGemwin] abstraction and then reloaded ofelia package to deken. Could you please reinstall ofelia v1.0.8 and then try "ofelia/examples/gem/main.pd" again to see if it works now? Thank you so much! Zack

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Re: [PD] using tabread4~~
by Gabriel Lecup 29 Apr '18

29 Apr '18

*Hello,I’m running into the same problems: How to divide and truncate signal to run tabread4~~?How to use for negative speed (reverse)?I’ve been trying to fit the tabread4~~ help by Ypatios with the B.16.long-varispeed.pd example, with no success.Any guidance? Or alternative suggestion?Thanks,GL*

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Re: [PD] [PD-announce] ofelia v1.0.8 released
by Zack Lee 29 Apr '18

29 Apr '18

Hi Oliver. Thank you for your report. So far, I've only tested the ofelia + gem example on macOS. I will make sure it works on Windows and Linux too as soon as possible. And regarding your last question, I just added the existing functions from openFrameworks. http://openframeworks.cc/documentation/utils/ofSystemUtils/ But setting the position/size for the dialog window sounds useful. I'll see if it's possible to add them later. Thanks! Zack ------------------------------------------------------------------------------------------------------- hi, zack ! fantastic work, looks very exciting and promising ! i have yet to check all the help patches, which are nicely organized and layouted and very informative ! i just did a quick test of the Gem example, but ... Zack Lee wrote: > Hi, ofelia v1.0.8 is now available. > > You can use GEM with ofelia thanks toArnaud Courcelle > <https://www.facebook.com/arno.courcelle?fref=gs&dti= 4729684494&hc_location=group>who > created [ofGemwin] and [ofGemhead] abstractions. > Please try out "ofelia/examples/gem/main.pd" to learn how to use GEM > with ofelia. I've only tested this on macOS by the way. ... unfortunately it doesn't seem to work on windows (W 7 / 64bit). the windows stay black and turning ofGemhead on/off doesn't change anything. the image seems to load ok though (no error messages) the PD console also doesn't output anything (in debug mode) yes, ofelia + Gem would be great ! > > Also, I added some utility objects for creating message and file > opening/saving dialogs. > screenshot: > https://github.com/cuinjune/ofxOfelia/blob/master/doc/ textbox_screenshot.png > You can find these objects inside [pd system] subpatch in UTILS section > of "ofelia/help-intro.pd". very nice. if i might add a little wish here: a position/size argument or message for the dialog window ? best oliver

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[PD-announce] ofelia v1.0.8 released
by Zack Lee 29 Apr '18

29 Apr '18

Hi, ofelia v1.0.8 is now available. You can use GEM with ofelia thanks to Arnaud Courcelle <https://www.facebook.com/arno.courcelle?fref=gs&dti=4729684494&hc_location=…> who created [ofGemwin] and [ofGemhead] abstractions. Please try out "ofelia/examples/gem/main.pd" to learn how to use GEM with ofelia. I've only tested this on macOS by the way. Also, I added some utility objects for creating message and file opening/saving dialogs. screenshot: https://github.com/cuinjune/ofxOfelia/blob/master/doc/textbox_screenshot.png You can find these objects inside [pd system] subpatch in UTILS section of "ofelia/help-intro.pd". Changes: * added [ofGetFboTexID] and [ofGetImageTexID] * added GEM abstractions and example to the "examples/gem" directory * added ofRectangle related objects and help files * renamed [ofGetDollarArgs] to [ofGetCanvasArgs] * added [ofSetCanvasArgs], [ofRemoveCanvas], [ofGetCanvasIndex] * added [ofKeyCodeListener] * added ofSystemUtils objects and help files Upcoming features: * Video player and grabber * SVG loader * GUI abstractions * Raspberry Pi support More info about ofelia: https://github.com/cuinjune/ofxOfelia <https://l.facebook.com/l.php?u=https%3A%2F%2Fgithub.com%2Fcuinjune%2FofxOfe…> Cheers! Zack _______________________________________________ Pd-announce mailing list Pd-announce(a)lists.iem.at https://lists.puredata.info/listinfo/pd-announce

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Ganged Toggle?
by William Huston 28 Apr '18

28 Apr '18

I'm trying to make a Ganged Toggle. (but this also could apply to other graphical elements like hsl or vsl etc) I want to have #1 little orange [tgl] inside the graph-on-parent control window, and have a similar #2 little orange [tgl] inside the patch. I want to be able to click on either one. This should trigger a state change in the other. I want them to function as one logical element, with two different gui locations. Right now, let's say I set both [tgl]'s to both send and receive on $0-FOO. This seems to work, as both GUI elements track as I would expect. However, if we name the master as being the one that I click, then I see that *the slave tgl does not transmit on its outlet.* *This seems like a bug to me. * If this is expected behavior, or a necessary limitation, or a bad practice.... then how else can I accomplish a "Ganged Toggle" (e.g. could be hsl, etc.) with minimal logic? Thanks BH -- William Huston: WilliamAHuston(a)gmail.com Binghamton NY *Public Service Mapping / Videography / Research* Blog <http://WilliamAHuston.blogspot.com> -- Facebook <http://facebook.com/billhuston> -- Twitter <http://twitter.com/WilliamAHuston>-- Youtube <https://www.youtube.com/channel/UCGijK1amWOLglT3YeTyEBNQ?sub_congfirmation=1> Document collections: VirtualPipelines <http://TinyURL.com/VirtualPipelines> -- BHDCSDimockArchive <http://bit.ly/BHDCSDimockArchive> Please support my work: TinyURL.com/DonateToBillHuston

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[wrap~] issues
by Derek Holzer 26 Apr '18

26 Apr '18

Dear Pd friends, can you help me to understand [wrap~] better? My purpose is to create a "video raster" (using audio signals at a high sample rate) of X and Y values to read luma information from [pix_data]. To do this, I have one [phasor~] creating the vertical ramp, at 25 Hz (= 25 frames per second). Then I require another series of ramps from 0 to 1 for the horizontal lines. If I want 120 lines per frame, I do it like this: [phasor~ 25] | [*~ 120] | [wrap~] This gives me 120 ramps for every one cycle of [phasor~]. So far so good. However, the ramps I get are not equal in amplitude, there are tiny variations which cause distortions in the raster, and which I can see when I plot the ramps to a array with [tabwrite~], and which I can see as a jagged edge if I plot my raster out on an XY oscilloscope or similar. Also, the ramps have some phase issues. 25 frames with 120 lines per frame works just fine, but as I adjust the frame rate or the number of lines per frame, the image data which I get from [pix_data] seems to "rotate" out of the frame and wrap around to the other side. Only multiples of 25/120 give me image date which is centered in the frame of the video or image being analyzed by [pix_data]. I would be happy to make a video of this if you like, but I wonder if someone with better DSP knowledge than me might have some suggestions. You can see the patch in question here: https://github.com/macumbista/vectorsynthesis/blob/master/V-scanprocessor-h… (Requires checking out entire Vector Synthesis library. Also requires PD >= 0.47 and Gem if you want all of it to work. Open the [V-scanprocessor] object to see the [phasor~] and [wrap~] configuration.) Andy Farnell suggested that the amplitude differences in the ramps may be a cumulative 32 bit precision error, but that would not explain the phase issue. I also tried using sample-rate [metro] and [line~] objects to create the horizontal lines but this was even less precise. Thank you for your kind attention! Derek -- derek holzer noise.art.technology http://macumbista.net

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Pd workshop in London + Meetup/show in Berlin?
by Johann Diedrick 26 Apr '18

26 Apr '18

Hey Pd list, Long time listener, first time caller. I'm going to be teaching a workshop in London from June 23rd to June 24th on how to build a physical sampler instrument using Pd on a Raspberry Pi. http://musichackspace.org/events/harvester-build-diy-sampler-johann-diedric… I'll also be giving a talk/performance on June 25th: http://musichackspace.org/events/artist-talk-johann-diedrick/ Hopefully some of you can attend! If not, I'd still love to meet up with people. I'll be in London from June 21st to around July 1st. I'm also going to be passing through Berlin around July 3rd to July 7th. I would love to meet up with other Pd'ers in Berlin if you're around! Dan Wilcox and I were talking about a potential Pd meetup/show/performance night in Berlin if people were interested and could help set up a show. Hope to meet some of you soon! Johann http://www.johanndiedrick.com/ http://aquiet.life/

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Re: [PD] [until] ceiling
by hans w. koch 26 Apr '18

26 Apr '18

thanks orm and cyrille for forcing me to acknowledge, that i´ve indeed hit the IEEE ceiling here. i stubbornly tried to turn a blind eye to that... i am using pd 48-1 in 64bit but to my understanding internally it stil computes single precision. and the copy of pd-double floating around, doesn´t provide the lovely amenities of the text objects, on which most of my operations rely. maybe its finally time to look into python… all best hans > Am 26.04.2018 um 10:13 schrieb Orm Finnendahl <orm.finnendahl(a)selma.hfmdk-frankfurt.de>: > > Hi Hans, > > this is related to the integer precision of float numbers. In 32-bit > pd to my knowledge single-floats as specified here are used: > > https://en.wikipedia.org/wiki/IEEE_754 > > To be able to use bigger integers you can cascade more than one number > (like hours/minutes/seconds in a clock), if you want to calculate aith > these, implement abstractions for the needed mathematical functions, > using e.g. list representations of the individual numbers as in/output. > > Unfortunately this is also related to indexing into arrays limiting > the maximum address. > > Another solution could be to use 64-bit pd with double float > resolution. > > -- > Orm > > > Am Donnerstag, den 26. April 2018 um 09:57:35 Uhr (+0200) schrieb hans w. koch: >> thanks, cyrille, >> >> but why does the computation for 5pow12 [print start] in my patch then still produce 2.44141e+08? >> or 5pow12 - 4pow12 work? >> (see attached) >> >> cheers hans >> > > >> >>> Am 26.04.2018 um 09:46 schrieb cyrille henry <ch(a)chnry.net>: >>> >>> hello, >>> >>> this is not a probem with until, but a problem of big number precision. >>> see attachment. >>> cheers >>> c >>> >>> >>> Le 26/04/2018 à 09:30, hans w. koch a écrit : >>>> dear miller, >>>> all >>>> for a project i am working with very high number of iterations. >>>> but it seems i´ve literally hit a ceiling with [until] >>>> for 4pow12 iterations it performs fine. >>>> but 5pow12 doesn´t. >>>> feeding it into a counter, 5pow12 produces the same result as 4pow12. >>>> attached a small patch to demonstrate. >>>> is this limitation by purpose? >>>> (i have a workaround not using [until], but wanted to make sure i didn´t overlook something) >>>> thanks >>>> hans >>>> _______________________________________________ >>>> Pd-list(a)lists.iem.at mailing list >>>> UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list >>> <big_number_precision.pd>_______________________________________________ >>> Pd-list(a)lists.iem.at mailing list >>> UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list >> > >> _______________________________________________ >> Pd-list(a)lists.iem.at mailing list >> UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list >

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[until] ceiling
by hans w. koch 26 Apr '18

26 Apr '18

dear miller, all for a project i am working with very high number of iterations. but it seems i´ve literally hit a ceiling with [until] for 4pow12 iterations it performs fine. but 5pow12 doesn´t. feeding it into a counter, 5pow12 produces the same result as 4pow12. attached a small patch to demonstrate. is this limitation by purpose? (i have a workaround not using [until], but wanted to make sure i didn´t overlook something) thanks hans

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find last error
by Matt Davey 26 Apr '18

26 Apr '18

find last error doesn't seem to be able to find the source of a bang going into a message box with arguments.

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Pd-list April 2018