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From: Shen, G. <sh...@bn...> - 2010-07-28 12:53:36
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I vote Bob's proposal. Addition to that, provide user a choice to get entire data back. An example is to study the trend to investigate a problem. Guobao Dalesio, Leo wrote: > > > D. Archive/History > ================== > > The archived data points for a given device. > > Given as a table of timestamped values, containing a rectangular > matrix of 5 arrays: > > Columns: > i) the values (double) > ii) the times as strings "dd-mmm-yyyy hh:mm:ss" (matlab dateform '0', > suitable for datenum); > iii) repeat count; > iv) the times as numeric timestamps in UNIX system time format > v) the pulse id; > vi) the count (1 for a scalar and greater than 1 for a waveform-- > count may be used to index into the values array for waveforms to > extract the waveform values for each sample > vii) a flag indicating whether the times represent Daylight Savings Time. > > For example see [3]. > > > ------------------------------------------------- > This sends the entire archive data. The server should be able to > compress this into a statistical sample. I would propose: > > for each sample > sample start time - in unix gmt (should convert to ascii in the > client side) > number of samples > first value > last value > mean > high > low > first standard deviation > -------------------------------------------------- > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------------ > The Palm PDK Hot Apps Program offers developers who use the > Plug-In Development Kit to bring their C/C++ apps to Palm for a share > of $1 Million in cash or HP Products. Visit us here for more details: > http://ad.doubleclick.net/clk;226879339;13503038;l? > http://clk.atdmt.com/CRS/go/247765532/direct/01/ > ------------------------------------------------------------------------ > > _______________________________________________ > Pvmanager-devel mailing list > Pvm...@li... > https://lists.sourceforge.net/lists/listinfo/pvmanager-devel > |
