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--- how_to:proteinfiltering [2010/03/16 11:28]
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+++ how_to:proteinfiltering [2010/04/14 15:19]
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 ====== How to filter proteins or protein groups  ======
-{{:how_to:filterproteins.png|}}
+Filtering can be done on 1 or more User Context. Once desired contexts are selectedn right-click in //MSI database// ans select //Proteins Filters// window or choose //MS Identification --> Context --> Proteins Filters//
+{{:how_to:filterproteins.png | Contextual Menu}} {{:how_to:filterproteins2.png| General menu}}
+All available filters are listed in the menu. To get more explanation on what filtering means, see [[userguide:proteinfiltering|Protein Filters]] page
+====== Regular Expression filter ======
+This filter is the same as the one used to select new typical protein (see [[how_to:changetypicalprotein|change typical protein)]] but only one rule composition could be specified.
+{{:how_to:regexpfilter.png|}}
+====== Peptide Count filter ======
+This filter allow user to mask protein group which
+  -  have less than x peptides (as grouped by hEIDI) or less than x peptides with different sequences (without taking into account the peptide mass) depending on the user choice.
+  - optionally, the peptide score option could be specified to retain protein having less than x peptides but each of them having a score higher than specified one.
+{{:how_to:peptidecountfilter.png|}}
+====== Occurrence in child contexts ======
+This filter allow user to mask protein that are not seen in at least ''X'' child context. This filter could only be used on context which groups at
+{{:how_to:childoccurencefilter.png|}}

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