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perseus:user:activities:matrixprocessing:filtercolumns:filtervalidvaluescolumns

Filter columns based on valid values

General

Brief description

Columns of the expression matrix are filtered to contain at least the specified numbers of entries that are valid in the specified way.

Output: The matrix of expression values is constrained to contain only these columns that fulfill the requirement.

Parameters

Min. number of values

Specied minimal number of valid values each expression column needs to contain to survive the filtering process (default: 3).

Mode

Defines, which expression columns are counted to define, if a row has enough valid values to survive the filtering process (default: In total).

Values should be

Defines the restriction for a value to be classified as valid (default: Valid). There are seven different possibilities to specify, which entry is counted as a valid value (default: Valid):

  1. Valid
  2. Greater than
  3. Greater or equal
  4. Less than
  5. Less or equal
  6. Between
  7. Outside

Minimum

This parameter is just relevant, if “Values should be” is set to “Greater than”, “Greater or equal”, “Between” or “Outside”. It defines a lower bound to apply the operation specified in “Values should be” (default: 0).

Maximum

This parameter is just relevant, if “Values should be” is set to “Less than”, “Less or equal”, “Between” or “Outside”. It defines a upper bound to apply the operation specified in “Values should be” (default: 0).


Filter mode

The “Filter mode” defines, whether the input matrix will be reduced (“Reduce matrix” = default) or a new categorical column called “Filter” will be generated containing the categories “Keep” and “Discard” (“Filter mode” = “Add categorical column”).


Parameter window

Perseus pop-up window: Filter columns -> Filter columns based on valid values

perseus/user/activities/matrixprocessing/filtercolumns/filtervalidvaluescolumns.txt · Last modified: 2015/11/23 14:47 (external edit)