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CAD tip CAD tip # 11898:

Question CAD 
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Q - question

Automatic schedule - number of blocks in a drawing.

A - answer Using the AutoCAD Data Extraction wizard (DATAEXTRACTION) you can easily create a table with an automatic counter of blocks of a specific name.

This table is then dynamically updated when you delete or add new blocks. The blocks are specified in the wizard, so their specification is stored in a DXE definition file. You can invoke the table update either manually (DATALINKUPDATE), or it is performed by default before the commands PLOT/PUBLISH, or you can add it by setting the DXEVAL variable also to the Save event.

Using data extraction to create a counter is illustrated in the video:

The resulting value from this table can be then further linked to a specific property of other drawing objects (e.g. size) - see XLSparam - tip 11896 or referred (dynamically, see Insert>Expression>Cell) from a different table using a field/expression.

Another option is creating a block legend using the BLegend utility - see Tip 6724.

100% *  CAD 
30.5.2018    2048×  
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applies to: AutoCAD ·

See also:
Tip 11896:How to drive dyn.block parameters or constraints from Excel?
Tip 8679:How to invoke updates of the data extraction table?
Tip 8677:Associative DWG table of line length totals (by layer).
Tip 6041:How to export AutoCAD drawing texts to a text file?
Tip 5636:What for are the AutoCAD .DXE files?

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