AUTOSCALE Command
- Last UpdatedNov 20, 2025
- 1 minute read
The AUTOSCALE command is typically:
AUTOSCALE
AUTOSCALE /ZONE1
AUTOSCALE /IDLIST-STEAM-PIPEWORK
This command carries out the following operations:
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The VIEW’s IDLN (ID List Name) attribute is set to the name of the Design item or IDList element to be drawn (/ZONE1 or /IDLIST-STEAM-PIPEWORK in our second and third examples).
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The VIEW's THPO (Through Position) attribute is set to the World coordinates corresponding to the center of interest of the Design items to be drawn.
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The VIEW's VSCA (View Scale) attribute is set to a value calculated such that the Design items to be drawn will fit within the View rectangle. The current values of the VIEW's DIR and SIZE attributes are used (these define the 'looking direction' and the size of the rectangle).
Note: The AUTOSCALE command only sets the IDLN attribute if it has not already been set. A second AUTOSCALE command will not change the IDLN (but the specified Design item or IDList will be used in the recalculation of the VSCA and THPO attributes). An AUTOSCALE command by itself will use the existing IDLN setting to recalculate VSCA and THPO.