POSITIONAL TABULATION

POSITIONAL TABULATION

Analysis Command

Generate a position tabulation for one of Dataplot's supported univariate statistics for either a list of variables or a list of matrices.

Dataplot typically computes statistics for the rows of a variable. However, there may be times where it is desirable to compute a statistic for each row of a list of variables. For example, given the variables A, B, C, and D where each variable has 5 rows, the POSITIONAL TABULATION MEAN A B C D command will print the means for

row 1:	mean of A(1), B(1), C(1), D(1)
row 2:	mean of A(2), B(2), C(2), D(2)
row 3:	mean of A(3), B(3), C(3), D(3)
row 4:	mean of A(4), B(4), C(4), D(4)
row 5:	mean of A(5), B(5), C(5), D(5)

If you specify a list of matrices, then the statistic will be computed for each (i,j) position of the matrices.

The list can contain either variables or matrices, but not a mix. All names in the list should have the same dimension. That is, if it is a list of variables, then each variable should have the same length. If it is a list of matrices, then each matrix should have the same number of rows and the same number of columns.

POSITIONAL TABULATION <stat> <y1> ... <yk>
                        <SUBSET/EXCEPT/FOR qualification>
where <stat> is one of Dataplot's supported statistics;
            <y1> ... <yk> is a list of 1 to 30 response variables or matrices (with the same dimensions);
and where the <SUBSET/EXCEPT/FOR qualification> is optional.

POSITIONAL TABULATION MEAN Y1 TO Y5
POSITIONAL TABULATION MEAN Y1 TO Y5 FOR I = 1 1 25

For a list of supported statistics, enter the command
HELP STATISTICS

Only statistics that operate on a single response are supported.

The output is also written to the file DPST1F.DAT. For example, you can do something like the following
POSITIONAL TABULATION MEAN A B C D
SKIP 0
READ DPST1F.DAT ROW COL YMEAN

To specify the number of digits to print to the right of the decimal point, enter the command (the default is exponential format)
SET WRITE DECIMALS <value>

None

None

CROSS TABULATE	= Generates a cross tabulation for a specified statistic.
MATRIX ROW STATISTIC	= Generate row statistics for a matrix.
STATISTIC PLOT	= Generate a statistic versus subset plot.
FLUCTUATION PLOT	= Generates a fluctuation plot.
TABULATION PLOT	= Generates a tabulation plot.

Exploratory Data Analysis

2011/9

 
let y1 = data 1 2 3
let y2 = data 4 5 6
let y3 = data 7 8 9
.
set write decimals 3
positional tabulation mean y1 y2 y3
.
read dpst1f.dat row col ymean
    

The following output is generated.

            Positional Tabulation (MEAN)
 
-------------------------------
     Row  Column      Statistic
-------------------------------
       1       1          4.000
       2       1          5.000
       3       1          6.000
    

 
read matrix a
1 2 3
4 5 6
7 8 9
end of data
.
read matrix b
11 21 31
41 51 61
71 81 91
end of data
.
read matrix c
101  102  103
111  121  131
141  151  161
end of data
.
set write decimals 1
positional tabulation sum a b c
    

The following output is generated.

            Positional Tabulation (SUM)
 
-------------------------------
     Row  Column      Statistic
-------------------------------
       1       1          113.0
       2       1          156.0
       3       1          219.0
       1       2          125.0
       2       2          177.0
       3       2          240.0
       1       3          137.0
       2       3          198.0
       3       3          261.0