====== How to access object properties ======

[[userguide:properties|Properties ]]are characteristics attached to a given "object".\\
Most of the time these objects are represented by "nodes" in a tree view.

There are several ways to access object properties:
  * in a property sheet
  * in a tree view where the columns often "map" some object properties

===== Show property sheet =====
  - From any tree view (MSIExplorer, ContextExplorer, etc.), select the node object your are interested in getting properties
  - Right-click to display context sensitive menu and select ''Properties''
  - The Property Sheet will show up
{{:propertysheet_all.png|How to access object properties}}

===== Display/Hide columns in an tree view =====
  - From any tree view (MSIExplorer, ContextExplorer, etc., click on the small icon at the top right corner
  - The "Change Visible Columns" dialog will show up
  - Check/Uncheck the properties you want to show/hide, and validate
  - The header columns in the tree view will update automatically

:!: Columns in a tree view may reflect properties for only one specific type of object. For example in the ContextExplorer window, Protein Groups and Species are visible, but column headers only concern Protein Group properties.

{{:propertyoutlineview_all.png|How to change visible columns in a tree view}}

===== Filter rows in an tree view according column value in a tree view =====

{{:filtersoutlineview.png |Filters in a tree view}} You can find usefull filters in any tree view. For example, let's take the peptide tree view available in the protein group details tab ([[how_to:viewprotgroups|how to display protein group details]]).\\
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If you want to display only peptides coming from the three preparation protocols (10ml, 5ml and UF), right-click on the "Child contexts" column in the row (peptide) having the contexts you want, then choose ''Show only rows where > Child contexts == 10ml,5ml,UF'' in the context sensitive menu.\\
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{{:filtersoutlineview_nofilter.png |}}To come back to a normal view, right-click on the ''Child contexts'' column (any row) and select ''Show only rows where > No Filter'' in the context sensitive menu.\\