C74 Forums: capture object

capture object

Aug 31 2012 | 3:09 pm

i’m trying to save osc data as it comes in to a float box by using the capture object, however with the limitation being 512 values I’m getting around 4 seconds worth of data before it overwrites it, which is kinda rubbish.

is their any way to stack the capture objects or write a new file every 512 values? any help at all would be amazing.

Pedro Santos

Aug 31 2012 | 3:23 pm

You could use the [mtr] object instead. Although it has multi-track recording and playback capabilities, you could use only one track [mtr 1].

crispypancakes

Aug 31 2012 | 3:47 pm

I don’t follow, i need the osc data to be stored externally for excel. its not signal data i need stored its numerical.

i was using the capture object with the write message for this.

never used the mtr object before/

Pedro Santos

Aug 31 2012 | 4:01 pm

mtr doesn’t deal with signals, otherwise I guess it would be called mtr~, it records any kind of message, such as ints or floats.
You can then write the resulting data to a text file easily imported in Excel.

crispypancakes

Aug 31 2012 | 4:18 pm

im getting no data from a continuous float going into the left input with a record message also going into the left input and when i send the write message the file is blank. i cant work out how this object works?

crispypancakes

Aug 31 2012 | 4:25 pm

now the text file has this nonsense in it ptrack Q Zqfloat $là@ †q$>ÖÝ@ ‚q$†Šá@ †q$ÎÝ@ †q$V.à@ ˆq$< †Þ@ „q$Þâ@ Žq$U5å@ ‚q$?Óà@ rq$üHâ@ zq$"ß@ ¤q$æöÞ@ pq$m_æ@ šq$¢Wã@ †q$„å@ ˆq$–ä@ tq$`eã@ ˆq$&ƒè@ †q$0å@ „q$€/ß@ ˆq$Æß@ †q$Ïíã@ „q$ ›à@ Šq$fSå@ €q$ª‰á@ ˆq$l*á@ rq$™ká@ ˆq$ö„Ý@ †q$}Þ@ ˆq$(äâ@ „q$f"ß@ †q$rã@ ˆq$Ûwß@ ‚q$˜ä@ –q$ÅîÞ@ xq$Jšä@ †q$†Øâ@ †q$0â@ †q$+äâ@ ˆq$Çœæ@ ‚q$„æ@ ˆq$vqç@ „q$º‚æ@ Šq$¬]ç@ ‚q$.uç@ ˆq$iæ@ †q$¢ââ@ „q$áDì@ „q$Ö9é@ ˆq$^éå@ †q$Pë@ ˆq$%eï@ ²q$høã@ Xq$ý˜â@ †q$ÁMë@ †q$}ïô@ vq$zà@ †q$Žå@ †q$âßæ@ †q$Óá@ †q$ö¦ì@ †q$ÂÕè@ †q$¿»à@ „q$Íä@ †q$Huå@ †q$û„Ù@ †q$ÙMé@ †q$|"ã@ †q$áîÝ@ ˆq$ÂNà@ †q$ëì@ ˆq$è¼â@ ‚q$§œã@

i simply want to store incoming float values and store more than 512 of them, is this beyond Max??

Tobias Rosenberger

Aug 31 2012 | 4:28 pm

this might help:

http://cycling74.com/docs/max5/tutorials/jit-tut/jitterwhatisamatrix.html

crispypancakes

Aug 31 2012 | 4:36 pm

thanks tobiasros but that didnt help me. very frustrating problem.

Pedro Santos

Aug 31 2012 | 4:58 pm

Start by using the Help File. Use the drop-down menu at the left.
Choose Record
Move the first slider to the left randomly.
Choose Stop
Choose Play.
The slider choose repeat the slider movement.
Now Choose Write
In the Save As dialog choose "Text File".

Does it work?

crispypancakes

Aug 31 2012 | 5:20 pm

thanks for all your help, i’m going to use the text object, it writes a float every 0.13 seconds which is ample for my needs.

i appreciate all your help.

Tobias Rosenberger

Aug 31 2012 | 5:25 pm

one way with using capture, but jit.matrix + maybe jit.fprint would be more comfortable…

-- Pasted Max Patch, click to expand. -- Copy all of the following text. Then, in Max, select New From Clipboard. ----------begin_max5_patcher---------- 601.3oc0VFriaBCDF9L7TXgTuTQivFLD5s9bTEUY.mrdEwFYL6llU66dwFnI aTBPPYsZO.V1dX7+7wvL7lqiWl3.s1C7cvOANNu453XVRufS+bGu8jC4kjZi YdYMJkf642sEuYOiWRUl8f8KVQT4Ow369kjlq57MFuJvG.gI5ATvvcvl9GgU XbtH64uAwm4bQi5Ru2sj52UzNW6kQ367.az69tqq9l+LiEN801Sb33TzCF05 0bjABCBBtZPhlLHih0C33QCxvAmuUvUbxdSv38CIiTd8vObzv2+zHi2JmMm4 8Z1QisPzpfGGj9JnMzBBWFiPAlgnzQYD5dYzMSQ1VJHVgJRBuPruMjVd5SRj dX85QQSvCCMVJcotR1dRaAuJYJJPTmWS1R+Bakpc+daKYbZtngadfnEUfIrq zBFouGitN7ReXryFfyPDp7pIS3I+NKMTOjDNVxT78xinwxkZq.MbYoTK1svy HoKvV9f+KePIiwG7+U4KJPFnbYsmQ30ccoSMr4F33t6bglpykMvxwRvNonoB fO0V4N6YEZppjLZtB5gAGaAlbRkpQRWVFSTDb593njGJTtcUE3JbJFtN4L3X LzzY4hex0DR50+HwpEMx7gSqOaGbJpJn0JFmnXs+A7Iah+fMOwJJnlsCFdJV MIqjZHx0eyMW0DOC0jZM0fmgZzu7sjbPyPNgVSM5SBNgZvVSMo+a8pR++qSp GHxd5YN4NVTNyopyEL7SUOy4Kc3R+1pqFMop5Eprt2mFoz1+5YgTOM12Lkw6 lZ7nmj9Bavdrq1au69G.HT20EC -----------end_max5_patcher-----------

Christopher Dobrian

Aug 31 2012 | 11:06 pm

The capacity of the capture object is set with its first argument. (See object help and reference pages.)

The data to be recorded in mtr must go in the inlets to the right of the first inlet, not the first inlet. (See object help and reference pages.)

One can store floats in a jit.matrix with a ‘setcell’ (or in this case, ‘setcell1d’) message.

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crispypancakes

Sep 01 2012 | 11:17 am

thanks for this, i understand first argument sets the size of capture but no matter what i put in there it was always 512.

crispypancakes

Sep 01 2012 | 11:20 am

needs to be a power 2 number. i’m a total thicko.

many, hundreds of thanks to everyone.