Displaying 1 result from an estimated 1 matches for "survey_time".
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server_time
2013 Apr 20
7
Reshape or Plyr?
...acoustic
monitoring and usually the data is for 2-3 nights but in some cases my
be longer like months or years for each location..
The data output from my management data base is proved by species by
night for each location so data frame would look like this below. What I
need to do is sum the Survey_time by Spec_Code for each location name
and divide summed AI values for each Spec_code by the summed Survey time
to adjust for unit effort then standardize it all by *10 to represent
the relative abundance by survey hour to 10 hours. How best to do this?
Using Plyr or reshape?
Location name SPEC...