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Block
Replace
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Introduction
Many types of drawings rely heavily
on the use of blocks to simplify the drawing process, reduce file size, and
provide consistency. Occasionally, it is necessary to replace existing
block insertions with a different block. You could rely on other tools
to accomplish this, but they can't handle dynamic blocks and they don't preserve
attribute data.
Replacing Blocks
Block Replace searches a drawing for
block references (insertions) with the name you specify. When a block
reference is found, it is examined and the critical information about the
reference is used to create a new block reference of the block you specify.
Either of these blocks can by traditional, dynamic, attributed or non-attributed.
If you choose to do so, you may delete the original blocks immediately.
If not, the original blocks are simply made invisible. See the
Review section below for additional details.
Attributes
If the original and replacement block
definitions contain editable attributes, then Block Replace can transfer their
values into the replacement block when it is created. There are four
attribute transfer methods available for maximum flexibility in handling your
data.
Review
During the replacement process, you
have the option to have the program immediately delete the original block
references. If not, the block references are made invisible. They
are not moved to a layer that is turned off or frozen. They are truly
invisible. It is important to understand that they still exist in the
drawing. They are also linked to the replacement blocks. Block
Replace will not replace a block reference that is linked to another block.
Therefore, it is critical that you use one of the verification tools to remove
this link so that the blocks may be replaced again in the future. See
the table below for more information about the verification tools.
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Verification Tools |
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Accept |
Allows you to approve block replacements.
Once accepted, the old block reference is removed from the drawing.
In a single step, the four acceptance modes available allow you:
 Accept
all the replaced blocks in the drawing
Accept
all the replaced blocks on the current layout
Accept
only the replaced blocks visible on the screen
Accept
all the blocks replacements of a specified name
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Revert |
Allows you to reverse block replacements.
Once reverted, the new block reference is removed from the drawing.
In a single step, the four revert modes available allow you:
Revert
all the replaced blocks in the drawing
Revert
all the replaced blocks on the current layout
Revert
only the replaced blocks visible on the screen
Revert
all the blocks replacements of a specified name
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Verify |
Allows you to approve or reverse block
replacements. During the verification process, each block
replacement, including the original and replacement blocks, will be
zoomed into view and highlighted. You will have the option to
accept, revert, or skip each block replacement. Skipping a
replacement leaves both the original and replacement blocks intact.
You may verify them again at any time including future drawing
sessions. In a single step, the four verification modes allow
you to:
Verify
all the replaced blocks in the drawing
Verify
all the replaced blocks on the current layout
Verify
only the replaced blocks visible on the screen
Verify
all the blocks replacements of a specified name
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Features
Dynamic
block support
(v12.x and higher)
Script
support
(v12.x and higher)
Automatic
or Manual block selection
Four
attribute transfer methods
Built-in
layer filters
Orphaned
attribute retention (converts any attribute values not transferred into
text objects)
 Attribute
location maintenance (provides three methods to control the location of attributes that are not in
their default location) (v13.x
only)
Attribute
rotation maintenance (provides
three methods to control the rotation of attributes that are not at
their default rotation) (v13.x only)
Fixed
or byobject layer specification (new block references can be placed on a
specified layer or can be placed on the layer on which the original block
reference exists)
Fixed
or byobject rotation specification (new block references can be
rotated to a
specified angle or can be rotated to match the original block reference)
Fixed
or byobject scale specification (new block references can be
scaled to a
specified scale or can be scaled to match the original block
reference)
Three replacement
verification commands
Compatibility
AutoCAD 2008
+ verticals (v13.x)
AutoCAD 2007
+ verticals (v13.x)
AutoCAD 2006
+ verticals (v13.x)
AutoCAD 2005
+ verticals (v11.x)
AutoCAD 2004
+ verticals (v11.x)
AutoCAD 2002
+ verticals (v11.x)
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