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2007 May 03 15:53

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Re: [vox-tech] creating a lookup table in awk
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Re: [vox-tech] creating a lookup table in awk



Hi Issac,

Actually I regularly use R + Postgresql for all of my research, thanks though.

I am helping a colleague -- and we looking for a quick alternative to python.

thanks,

dylan

On Thursday 03 May 2007 13:28, Issac Trotts wrote:
> If you want to do data analysis and plotting then your best bet would
> probably be GNU R: www.r-project.org.
>
> It has a steeper learning curve than Python, but it's really dedicated to
> doing stats.
>
> Issac
>
> On 5/3/07, Dylan Beaudette <dylan.beaudette@gmail.com> wrote:
> > Hi everyone,
> >
> > I have a rather interesting problem, that i would like to solve with awk
> > or
> > bash scripting - but if all else fails then I will switch to python.
> >
> > here is the idea:
> >
> > i have a set of files, each with 30 columns - coming from a set of 10
> > data loggers. each file represents the output from a single datalogger.
> > the ordering of the columns is consistant, and maps to a soil-pit id and
> > moisture
> > probe id. I need to create a look-up table to index ids to column
> > numbers. Then, looping over the dimensions of the look-up table would
> > allow me to process the file line-by line, column-by column accordingly:
> >
> > do bash or awk support these type of data structures?
> >
> > this is how i would envision it in something like python / php:
> >
> > # a multi-dimensional hash for each datalogger:
> > # referencing the sensors assigned to a pit
> > # and the row number in which the sensor values exist in the output file
> > datalogger_1[
> > pit_1[
> > sensor_1 => 4
> > sensor_2 => 5
> > sensor_3 => 6
> > sensor_4 => 7
> > ],
> > pit_2[
> > sensor_1 => 8
> > sensor_2 => 9
> > sensor_3 => 10
> > sensor_4 => 11
> > sensor_5 => 12
> > ],
> > ...
> > ]
> >
> >
> > # the logic of the program would be :
> > iterate over the pits in the datalogger hash
> >        iterate over the sensors in each pit hash
> >                lookup the column number for each sensor
> >                do cool stuff
> >        end
> > end
> >
> > any ideas ? or should I just stick with python for this?
> >
> > cheers,
> >
> > --
> > Dylan Beaudette
> > Soils and Biogeochemistry Graduate Group
> > University of California at Davis
> > 530.754.7341
> > _______________________________________________
> > vox-tech mailing list
> > vox-tech@lists.lugod.org
> > http://lists.lugod.org/mailman/listinfo/vox-tech

-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341
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