42
Community Analysis Package
By Maximum value
   For each row or column the maximum value is found and
all values are divided by the maximum.
By Mean
   For each row or column the mean value is found and all values are
subtracted from the mean.
By SD 
  For each row or column the standard deviation value is found and all
values are divided by the standard deviation.
Binary using Mean
   For each row or column the mean is found and all values
above the mean are given the value 1 and all values below the mean zero.
Binary using Median
   For each row or column the median is found and all
values above the median are given the value 1 and all values below the mean
zero.
General by Row
   This allows you to define a general relativisation to be applied
to each row. Each value is divided by
  
where i is the column and a is a user selected parameter (the default value is 1)
entered into the Enter value box displayed in the lower panel.
General by Column
   This allows you to define a general relativisation to be
applied to each column. Each value is divided by
  
where j is the row and a is a user selected parameter (the default value is 1)
entered into the Enter value box displayed in the lower panel.
8.4
Transposing data
Use this option to switch the rows and columns of the data set. Like all the other
adjustments it is applied to the working data set. Select transpose in the Type of
Adjustment radio box and click on the Submit button.
The normal arrangement of community data within CAP is to have the samples
(quadrates) as columns and the species as the rows. However, Excel has a
maximum number of columns of 255, which can prove difficult if you have a data
set with a very large number of sites/samples. If this is the case, the data can be
arranged in Excel with the species forming the columns, and the Transpose
option within CAP used to switch columns and rows.
NB
 If you have allocated your samples to groups, for the purposes of using the
ANOSIM or SIMPER methods, you will find that your groups will be lost if you
transpose your data. The solution is to save your working data using File | Export,
then reload the data into CAP.
Copyright 2004, PISCES CONSERVATION LTD





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