Re: [PD] anyone using array quantile?
Got it, thanks. *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* On 24 November 2013 04:07, Miller Puckette m...@ucsd.edu wrote: Oops, my bad. Should be up now. M On Sun, Nov 24, 2013 at 03:01:58AM +, peiman khosravi wrote: Great, thanks very much. I can't find it here though: http://msp.ucsd.edu/software.html I've become addicted to this new stuff! *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* On 23 November 2013 18:34, Miller Puckette m...@ucsd.edu wrote: My pleasure . I want the stuff to work after all. I don't know if anyone else is using the new stuff so didn't throw it on pd-announce, but I've quietly poseted a bug-fix release on my page (0.45-4, msp.ucsd.edu). cheers Miller On Sat, Nov 23, 2013 at 09:36:30AM +, peiman khosravi wrote: Thanks for looking into it so quickly. all the best, Peiman ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] anyone using array quantile?
Thanks for looking into it so quickly. all the best, Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* On 22 November 2013 16:11, Miller Puckette m...@ucsd.edu wrote: Aha and bngo! In effect - array random is only looking at the lower 1/2 of the distribution. I made a stupid C data type fumble in the code. I recently tripped over a bug, too, in text set - will attempt to fix them both and issue an updated pd-0.45 in the next day or 2. Thanks for flagging this! Miller On Fri, Nov 22, 2013 at 03:56:54PM +, peiman khosravi wrote: Thanks. In this case I think something isn't right with [array random]. Using the same array, I get very different patterns with the two methods (see attached patch). The difference is obvious with a gaussian distribution, which looks skewed when generated with [array random]. Best, Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* On 22 November 2013 15:48, Miller Puckette m...@ucsd.edu wrote: There could be something wrong. But array_random_bang() (in x_array.c) cooks up a pseudorandom number from 0 to 1 (I believe) and then calls array_quantile_float() with it. That's exactly what connecting random() to array_quantile in a patch should be doing. cheers Miller On Fri, Nov 22, 2013 at 09:38:59AM +, peiman khosravi wrote: Thank you very much. That does the trick. Though, [array random] doesn't seem to be working as I expected. Am I right to think that it should produce the same result as [array quantile] fed with uniformly distributed random values? If so I'm getting very different results here. Thanks Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* On 22 November 2013 04:16, Miller Puckette m...@ucsd.edu wrote: I think the patch is occasionally (once every 512 times on average) sending zero to array quantile which then outputs the index of the first nonzero number in the table -- in this case a point with probability about 1e-45. Maybe try random 1e8 (or so) and divide by 1e8 to get a more continuous, less grainy random sample out of the array. cheers Miller On Fri, Nov 22, 2013 at 01:51:19AM +, peiman khosravi wrote: Hello, Has anyone got any experience with [array quantile]? I'm getting some strange results and I've done everything I can think of. I've attached a patch that should clarify the problem. Basically, sometimes, not always, [array quantile] returns some weird numbers that I can't explain. And a related issue: array random doesn't seem to be doing what it should be doing. It returns very different values, compared with quantile fed with random values between 0 and 1. Again, there is an example of what I mean in the attached patch. Thanks Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] anyone using array quantile?
My pleasure . I want the stuff to work after all. I don't know if anyone else is using the new stuff so didn't throw it on pd-announce, but I've quietly poseted a bug-fix release on my page (0.45-4, msp.ucsd.edu). cheers Miller On Sat, Nov 23, 2013 at 09:36:30AM +, peiman khosravi wrote: Thanks for looking into it so quickly. all the best, Peiman ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] anyone using array quantile?
Great, thanks very much. I can't find it here though: http://msp.ucsd.edu/software.html I've become addicted to this new stuff! *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* On 23 November 2013 18:34, Miller Puckette m...@ucsd.edu wrote: My pleasure . I want the stuff to work after all. I don't know if anyone else is using the new stuff so didn't throw it on pd-announce, but I've quietly poseted a bug-fix release on my page (0.45-4, msp.ucsd.edu). cheers Miller On Sat, Nov 23, 2013 at 09:36:30AM +, peiman khosravi wrote: Thanks for looking into it so quickly. all the best, Peiman ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] anyone using array quantile?
Oops, my bad. Should be up now. M On Sun, Nov 24, 2013 at 03:01:58AM +, peiman khosravi wrote: Great, thanks very much. I can't find it here though: http://msp.ucsd.edu/software.html I've become addicted to this new stuff! *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* On 23 November 2013 18:34, Miller Puckette m...@ucsd.edu wrote: My pleasure . I want the stuff to work after all. I don't know if anyone else is using the new stuff so didn't throw it on pd-announce, but I've quietly poseted a bug-fix release on my page (0.45-4, msp.ucsd.edu). cheers Miller On Sat, Nov 23, 2013 at 09:36:30AM +, peiman khosravi wrote: Thanks for looking into it so quickly. all the best, Peiman ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] anyone using array quantile?
Thank you very much. That does the trick. Though, [array random] doesn't seem to be working as I expected. Am I right to think that it should produce the same result as [array quantile] fed with uniformly distributed random values? If so I'm getting very different results here. Thanks Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* On 22 November 2013 04:16, Miller Puckette m...@ucsd.edu wrote: I think the patch is occasionally (once every 512 times on average) sending zero to array quantile which then outputs the index of the first nonzero number in the table -- in this case a point with probability about 1e-45. Maybe try random 1e8 (or so) and divide by 1e8 to get a more continuous, less grainy random sample out of the array. cheers Miller On Fri, Nov 22, 2013 at 01:51:19AM +, peiman khosravi wrote: Hello, Has anyone got any experience with [array quantile]? I'm getting some strange results and I've done everything I can think of. I've attached a patch that should clarify the problem. Basically, sometimes, not always, [array quantile] returns some weird numbers that I can't explain. And a related issue: array random doesn't seem to be doing what it should be doing. It returns very different values, compared with quantile fed with random values between 0 and 1. Again, there is an example of what I mean in the attached patch. Thanks Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] anyone using array quantile?
There could be something wrong. But array_random_bang() (in x_array.c) cooks up a pseudorandom number from 0 to 1 (I believe) and then calls array_quantile_float() with it. That's exactly what connecting random() to array_quantile in a patch should be doing. cheers Miller On Fri, Nov 22, 2013 at 09:38:59AM +, peiman khosravi wrote: Thank you very much. That does the trick. Though, [array random] doesn't seem to be working as I expected. Am I right to think that it should produce the same result as [array quantile] fed with uniformly distributed random values? If so I'm getting very different results here. Thanks Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* On 22 November 2013 04:16, Miller Puckette m...@ucsd.edu wrote: I think the patch is occasionally (once every 512 times on average) sending zero to array quantile which then outputs the index of the first nonzero number in the table -- in this case a point with probability about 1e-45. Maybe try random 1e8 (or so) and divide by 1e8 to get a more continuous, less grainy random sample out of the array. cheers Miller On Fri, Nov 22, 2013 at 01:51:19AM +, peiman khosravi wrote: Hello, Has anyone got any experience with [array quantile]? I'm getting some strange results and I've done everything I can think of. I've attached a patch that should clarify the problem. Basically, sometimes, not always, [array quantile] returns some weird numbers that I can't explain. And a related issue: array random doesn't seem to be doing what it should be doing. It returns very different values, compared with quantile fed with random values between 0 and 1. Again, there is an example of what I mean in the attached patch. Thanks Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] anyone using array quantile?
Aha and bngo! In effect - array random is only looking at the lower 1/2 of the distribution. I made a stupid C data type fumble in the code. I recently tripped over a bug, too, in text set - will attempt to fix them both and issue an updated pd-0.45 in the next day or 2. Thanks for flagging this! Miller On Fri, Nov 22, 2013 at 03:56:54PM +, peiman khosravi wrote: Thanks. In this case I think something isn't right with [array random]. Using the same array, I get very different patterns with the two methods (see attached patch). The difference is obvious with a gaussian distribution, which looks skewed when generated with [array random]. Best, Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* On 22 November 2013 15:48, Miller Puckette m...@ucsd.edu wrote: There could be something wrong. But array_random_bang() (in x_array.c) cooks up a pseudorandom number from 0 to 1 (I believe) and then calls array_quantile_float() with it. That's exactly what connecting random() to array_quantile in a patch should be doing. cheers Miller On Fri, Nov 22, 2013 at 09:38:59AM +, peiman khosravi wrote: Thank you very much. That does the trick. Though, [array random] doesn't seem to be working as I expected. Am I right to think that it should produce the same result as [array quantile] fed with uniformly distributed random values? If so I'm getting very different results here. Thanks Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* On 22 November 2013 04:16, Miller Puckette m...@ucsd.edu wrote: I think the patch is occasionally (once every 512 times on average) sending zero to array quantile which then outputs the index of the first nonzero number in the table -- in this case a point with probability about 1e-45. Maybe try random 1e8 (or so) and divide by 1e8 to get a more continuous, less grainy random sample out of the array. cheers Miller On Fri, Nov 22, 2013 at 01:51:19AM +, peiman khosravi wrote: Hello, Has anyone got any experience with [array quantile]? I'm getting some strange results and I've done everything I can think of. I've attached a patch that should clarify the problem. Basically, sometimes, not always, [array quantile] returns some weird numbers that I can't explain. And a related issue: array random doesn't seem to be doing what it should be doing. It returns very different values, compared with quantile fed with random values between 0 and 1. Again, there is an example of what I mean in the attached patch. Thanks Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] anyone using array quantile?
I think the patch is occasionally (once every 512 times on average) sending zero to array quantile which then outputs the index of the first nonzero number in the table -- in this case a point with probability about 1e-45. Maybe try random 1e8 (or so) and divide by 1e8 to get a more continuous, less grainy random sample out of the array. cheers Miller On Fri, Nov 22, 2013 at 01:51:19AM +, peiman khosravi wrote: Hello, Has anyone got any experience with [array quantile]? I'm getting some strange results and I've done everything I can think of. I've attached a patch that should clarify the problem. Basically, sometimes, not always, [array quantile] returns some weird numbers that I can't explain. And a related issue: array random doesn't seem to be doing what it should be doing. It returns very different values, compared with quantile fed with random values between 0 and 1. Again, there is an example of what I mean in the attached patch. Thanks Peiman *www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS Feed http://peimankhosravi.co.uk/miscposts.rss || Concert News http://spectralkimia.wordpress.com/* ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
