source: branches/lib/HELP_SOURCE/source/sel_fil.hlp

#       main topics:
UP      arb.hlp
UP      glossary.hlp
UP      extended.hlp

#       sub topics:
SUB     selected.hlp

# format described in ../help.readme


TITLE           Select Filter

OCCURRENCE      ARB_NT/Tree/Neighbour joining/Select Filter

DESCRIPTION     Any sequence of symbols stored as 'sequence associated
                information' ('SAI') can be selected from the 'Select a Filter'
                subwindow and used as a filter for the in or exclusion of
                alignment columns for treeing.
                If any species is selected, you may use it's sequence for
                filter. It's name will be displayed just before the SAI names.

                The characters of the filter which define columns to exclude
                have to be defined in the respective input field.

                Additionally or alternatively you may define the absolute column
                range to be used (a range from 0 to 0 means 'use whole sequence').

                The selected filter is displayed in the subwindow on the bottom.

                All bases may be simplified, leaving only transversions
                and simplified amino-acid-groups, allowing transversion
                parsimony/fdnaml/distmethods

NOTES           Any nucleotide sequence can be copied to SAI (sequence
                associated information) (ARB_NT/Species/Info/SPECIES/Convert to
                SAI) and then used as a filter.

                Multiple filters may be combined. In this case only those columns
                are used that are selected by ALL filters.

EXAMPLES        Include only positions which are occupied by a residue within
                the E. coli sequence:

                        1. Select 'ECOLI' from the 'Select a Filter' subwindow.

                        2. Type non-nucleotide symbols to the 'Exclude Column'
                                subwindow (.-).

                Include only non-base paired positions:

                        1. Select 'HELIX' from the 'Select a Filter' subwindow.

                        2. Type base pair symbols to the 'Exclude Column'
                                subwindow ([<>]).

                Include only positions which have been unambiguously determined
                within a particular sequence:

                        1. Select the species and convert it to 'SAI'
                           using LINK{sp_sp_2_ext.hlp}.

                        2. Select the new 'SAI' from the 'Select a Filter'
                                subwindow.

                        3. Type non-nucleotide and ambiguity symbols to the
                                'Exclude Column' subwindow (.-acguRYS ....).

WARNINGS        None

BUGS            No bugs known