Encode/Compress a list for storing


    Jun 22 2011 | 5:23 pm
    Hello,
    I just wonder if there is a way to somehow compress a long list to fewer elements for storing at a coll. Is there an algorithm to encode/decode a long list? Many thanks
    Vangelis

    • Jun 22 2011 | 10:03 pm
      I guess that depends on what your lists might be made up of. Also, is there a reason you don't want to store them in the [coll] as they are?
      Here's an idea that turns everything into one symbol using [regexp]:
    • Jun 23 2011 | 9:19 am
      i guess because they are too long.
      of course one could merge several numbers into a symbol such as "symbol 12345 54321 99999 77777".
    • Jun 25 2011 | 12:38 am
      Hello,
      many thanks for your replies. I guess I have to be more precise. I am trying to capture/store data from the Kinect. That means an update of 18 points with three (XYZ) values, 30 times a sec. I am receiving data as OSC so I turn them to ASCII numbers (atoi) first. I can use a coll object to store them but playback is slow for an unknown reason to me even if I use metro:1 I got in to GDIF http://gdif.3075338.n2.nabble.com/ (based on FTM) but for a minute of capture data the size of the file is around 4mb and needs at least 5 min to be loaded back to the algorithm. Another option is to use a OSC recorder and I ve found one (java) that does not work, again not sure why. So, I was thinking if there is a way to compress the data before storing in order to produce smaller data sets. I am not sure there is a benefit to turn them to symbols first...is there? Finally I got into this :http://www.maxobjects.com/?request=compress&operateur=AND&id_format=0&id_plateforme=0&Submit=OK and tested the a-hglide object and sadam.lzo with no success (not very informative help files)
      Any ideas? Many thx
    • Jun 25 2011 | 4:12 am
      Storage of large quantities of numerical data is exactly what Jitter's for.
      Here's an example of storing and playing back one minute's worth of 18 xyz coordinates at 30 fps.
    • Jun 29 2011 | 9:48 pm
      Thanks Christopher. I will try to mod it to store lists of 25 elements and see if that works fast on large amount of data
    • Jul 01 2016 | 12:50 am
      Did you find a way to record the kinect data? I've got the same goal, now 5 years later. I hope to catch up to max one day. ;)