[R] automating a script to read a file

[Steve_Friedman at nps.gov]

Petr,

Thank you very much this works.  A little more tweaking and I'll have what
I need.

Thanks


Steve Friedman Ph. D.
Ecologist  / Spatial Statistical Analyst
Everglades and Dry Tortugas National Park
950 N Krome Ave (3rd Floor)
Homestead, Florida 33034

Steve_Friedman at nps.gov
Office (305) 224 - 4282
Fax     (305) 224 - 4147


                                                                           
             Petr Savicky                                                  
             <savicky at cs.cas.c                                             
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                                       Re: [R] automating a script to read 
             04/23/2012 04:42          a file                              
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On Mon, Apr 23, 2012 at 04:02:45PM -0400, Steve_Friedman at nps.gov wrote:
>
> Hi,
>
>
> The following script (which I did not develop) is used to calculate and
> plot a skewed normal curve.  The script currently requires the user to
> input six parameters, rather than reading these directly from a file.
>
> I've been spinning wheels here, trying to figure out how to modify the
> script to automate it.  I have four data sets, each in excess of 300
> records that I need to process.
>
> My initial thoughts were to use the  lapply and use a pdf graphic device
to
> capture the plots to do this, but my R programming skills are too limited
> to determine how to best accomplish this.

Hi.

If you read the parameters from a file and put them to a matrix,
then all the plots may be produced using a loop like the following.

  #some parameters
  p <- matrix(1:18, nrow=3, ncol=6)
  for (i in 1:nrow(p)) {
      plot.spdf(p[i, 1], p[i, 2], p[i, 3], p[i, 4], p[i, 5], p[i, 6])
      readline("press Enter to continue")
  }

If you use pdf() for sending the graphics to a file, then remove
the "readline" command.

Hope this helps.

Petr Savicky.

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