Hi Frank,
Thanks for your help. I'm getting things that "kind of" scroll... building an horrible patch :) Some values are random, I guess I have a problem when access extremities of the array. I'm sure there's something simpler, probably using trigger, but I can't figure out how I could use a trigger here. Could you give one last hint ? I guess I need to learn how to "think" pure data... Anyway, thanks again. Cheers, Seb Hallo, > Sebastien Lelong hat gesagt: // Sebastien Lelong wrote: > > > I've recently discovered Pure Data as versatile platform I could use to > > build a robotic GUI. The idea is to collect data from a robot, send it to > an > > OSC (open source control) server, get the data in pd~ and deal with it. > One > > important aspect would be to plot data, in real-time, so the graph > scrolls > > from right to left, and data is appended to the end of array (right) > (well, > > I hope what I write is understandable...). > > > > So far so good, I've been able to build all the OSC part, and even plot > > things in a array in pd~, but I can only find a way to plot data from > left > > to right, and when array's end is reached, clear it and start from > beginning > > again. In other words, I can't make it scroll... > > One simple way to make it scroll would be to use [list-lastx > <TABLESIZE>] from the [list]-abs collection. Just prepend a 0 to the > outgoing list and send it to a receiver named after the table like this: > > [table DATA 16] > > [r ROBOT] > | > [list-lastx 16] > | > [list prepend 0] > | > [s DATA] > > Alternatively do it manuall. The basic algorithm is this: > > If a new ROBOT-float comes in store it. Then start a loop over the table > where you > > 1) read out the current element with [tabread] > 2) store it in the right inlet of a [float] > 3) write the new value into the table with [tabwrite] > 4) increment your counter > 5) repeat using the float stored in 2) as the new value. > > This is a good excercise to get familiar with the [trigger] object and > Pd's execution order. > > Ciao > -- > Frank > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > -- Sébastien Lelong http://www.sirloon.net http://sirbot.org
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