jaja, "you can do the math". well, obviously we can always do the math, but he was asking for that particular object. anyway, i appreciate the math examples, surely they empower my brain : )
to the original question, as mentioned above, the object is in pd extended 2013/9/3 Mario Mey <mario...@gmail.com> > El 03/09/13 10:11, Lorenzo Sutton escribió: > > On 03/09/2013 14:06, Mario Mey wrote: >> >>> IOhannes, you are right only in these cases: >>> >>> 0 127 0 500 >>> 0 300 0 1 >>> ... >>> >>> But, if I need: >>> >>> 50 10 0 500| >>> >> (assuming you want to map have 50 mapped to the 'minimum'): >> | >> [- 10] >> | >> [t b f] >> | / >> [- ] >> | >> [* 12.5] >> | >> >> 3000 -3000 0.5 0.6 >>> >> [* -1] >> | >> [+ 3000] >> | >> [/ 60000] >> | >> [+ 0.5] >> > > Yes, you can make this math every scale you need... or use an abstract > that does the same automatically. In my patch, I use 284 lin-eq-conv > objects. I didn't want to think how to make that math... and change > everytime (normally, I create a lin-eq-conv and change its values a lot of > times). > > Best. > > > > >> ... >>> >>> I will need a "linear equation conversion". As I wrote in last mail, I >>> was needing something like this, first in ActionScript... then in Python... >>> but I never could did it. Now, I needed again in Pd... so, I made >>> lin-eq-conv.pd with extrapolation and lin-eq-conv-clip.pd for clipped >>> values. I made it as neat as I could, to see how it works. Using x0-x1 and >>> y0-y1, it uses expr to get "a" and "b" at load. Then, it only computes "aX >>> + b = Y". >>> >>> I attach the lin-eq-conv.pd, lin-eq-conv-clip.pd and lin-eq-conv-help.pd. >>> >>> Also, I have some issues using [autoscale]. I start giving values and it >>> outputs only 1. Then, I start to down the input and, then, it shows the >>> real output. Maybe it's about this version (0.43.4 Pd-Extended 64bits). >>> >>> PD: translated to Python: >>> >>> |def lin_eq_conv(x, x0, x1, y0, y1): >>> a = (y0 - y1) / (x0 - x1) >>> b = (a * x0) + y0 >>> return a * x + b| >>> >>> >>> >>> >>> El 03/09/13 03:32, IOhannes zmölnig escribió: >>> >>>> On 09/02/2013 06:17 PM, hghoyer wrote: >>>> >>>>> Hi, >>>>> >>>>> in Max/MSP there is an object for simple scaling. >>>>> >>>>> If you create in MAX these object with this arguments: >>>>> >>>>> [scale 0 127 0 500] incomming messages from 0 to 127 are automatically >>>>> scaled from 0 to 500... >>>>> >>>> honestly i'm of the firm conviction that you should learn how scaling >>>> works: it really is only a matter of adding, multiplying, dividing, >>>> subtracting - stuff you should heave learned in primary school. >>>> >>>> as frank pointed out, this should do for you: >>>> >>>> | >>>> [/ 127] >>>> | >>>> [* 500] >>>> | >>>> >>>> if you find it too tedious to do the maths over and over again, you >>>> might want to create an abstraction. >>>> >>>> >>>> being able to solve trivial problems like this will surely empower you >>>> to solve more complex problems :-) >>>> >>>> gamsdr >>>> IOhannes >>>> >>>> >>>> >>>> >>>> >>>> ______________________________**_________________ >>>> Pd-list@iem.at mailing list >>>> UNSUBSCRIBE and account-management ->http://lists.puredata.info/** >>>> listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list> >>>> >>> >>> >>> >>> ______________________________**_________________ >>> Pd-list@iem.at mailing list >>> UNSUBSCRIBE and account-management -> http://lists.puredata.info/** >>> listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list> >>> >> >> >> ______________________________**_________________ >> Pd-list@iem.at mailing list >> UNSUBSCRIBE and account-management -> http://lists.puredata.info/** >> listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list> >> > > > ______________________________**_________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> http://lists.puredata.info/** > listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list> > -- JM Jones
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