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dxf

Setting initial zoom (directly writing a dxf)

I am trying to set the initial zoom in a dxf file.

I know that lines 12 and 22 set the center of the screen in VPORT table, but how do I set the zoom?

Solution

  • The DXF tag with group code 40 of the VPORT entity defines the height of viewing area in drawing units.

    In the latest DXF reference of R2018 this tag has a group code of 45, but I am sure this is an error in the DXF reference (like many others).

    Link to the Autodesk Reference of the VPORT entity.

    All my knowledge about the VPORT entity is here.