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TRANSFORM>DICHOTOMIZE
PURPOSE Form a binary matrix from a valued matrix.
DESCRIPTION Given a specified cut-off value then the valued matrix is made binary by comparing each element with the cut-off value. Comparisons can be strictly greater, greater than or equal, equal, less than or equal or strictly less than.
PARAMETERS
Input dataset:
Name of matrix to be dichotomized. Data type: Matrix.
Cut-off value: (Default = 0).
Any user-specified value. MEAN gives the average value of all the cells in the input matrix.
Diagonal OK? (Default = No)
Yes means that diagonal elements are considered valid in calculating the mean.
No ignores diagonal values.
Cut-off operator: (Default = 'GT').
Choices are:
GT - Matrix values replaced by a 1 if they are strictly greater than the cut-off value and 0 otherwise.
GE - Matrix values replaced by a 1 if they are greater than or equal to the cut-off value and 0 otherwise.
EQ - Matrix values replaced by a 1 if they are equal to the cut-off value and 0 otherwise.
LE - Matrix values replaced by a 1 if they are less than or equal to the cut-off value and 0 otherwise.
LT - Matrix values replaced by a 1 if they are strictly less than the cut-off value and 0 otherwise.
Output dataset: (Default = 'Dichotomize').
Name of file which contains dichotomized matrix.
LOG FILE Dichotomized matrix.
TIMING O(N^2).
COMMENTS None.
REFERENCES None.