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Filters can be used to modify which levels are displayed on the drawing.  Libraries containing filter information have been developed for the BRD drawing in Bridge Design and for drawings using the Highway Design borders.  In addition, users can create filters "on the fly" to find a level or a group of levels that have attributes in common - for example: level name, description and/or color.

Filters for Highway Design borders
Filters for "On the Fly" situations

For Highway Design borders:

  • To load the border filters:

     

    • Be sure either the currently open DGN file name or All Levels are highlighted in the left column.
    • In V8 only Select Levels > Import
    • Change file type to MicroStation Library Files (*.dgnlib).  Navigate to: N:\cadd\cadd\V8Workspace\Standards\dgnlib\BorderFilters.dgnlib.
    • Select OK.  The Border Filters are now loaded.  In V8i filters are automatically attached and do not need to be imported.
      Level Import Dialog
       
  • To use the filters:

    Open Level Display

    • Highlight the currently open DGN file name
    • Select the view number of the window where the cut sheet is located.
    • Set the Levels/Filters toggle should be set to Filters.
    • Highlight the filter of choice, for example:FS:ROW (Front Sheet - ROW).
      Note:  If the desired information doesn't show up on your cut sheet, unhighlight and highlight the filter again (there seems to be a glitch somewhere).  Understand that this will turn all other levels off in the DGN except those meeting the filter requirements.  Other level for barscales and plan stamps will need to be turned on separately.

Click for  Filter Designations.



For "On the Fly" situations:

  • Open Level Manager.

    • Right click on Filters in left column.  Choose New from the menu.  Either name the filter (ex. Poles) or just Enter.
    • A yellow row will appear in the Level Manager.  In any column add level criteria.  For example, in the Description column type pole.  Every Description with the word "pole" will be listed.

Using standard "operators" like: *, |, <, >, =>, =<, a user can pare down a list even more.  See list below (from MicroStation v8 Update manual).  Notice the different column headings and which operators work with which columns.

 Filter options

Other "operators" not mentioned/clarified:

  • ? - one character
  • * - zero or more characters
  • ! - not equal to




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