AutoClass - automatic classification of object properties
(C)2025, ARKANCE CZ    www.arkance.world  www.cadforum.cz
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AUTOCLASS is a tool for classification (grouping) of DWG
objects. It sorts selected objects into individual categories
based on their common property - like Elevation, Area, Length,
Volume, Radius, Rotation, attribute values etc. The individual
categories (classes) are represented by colors (multiple palettes
are offered - rainbow, hydro, green, pastel) or by layers - like
AUTOCLASS_RADIUS_10_19, AUTOCLASS_RADIUS_20-29, etc.
You can also use special properties RefPointZ (Z-coordinate
of the object's reference point) and PtDistance (distance to
specified point).

Just load the AUTOCLASS.VLX using APPLOAD or ACADDOC.LSP and
start the AUTOCLASS command. Select objects to classify and
AutoClass offers all common properties of these objects.
Choose any property and AutoClass scans the objects for minimum
and maximum values (extremes). Select color- or layer-classification.
For color classification, choose one of the preset palettes.
For layer classification, specify the number of classes or their
range (interval size). Layers in the form:
    AUTOCLASS_<property>_<from>_<to>
will be created automatically and the objects will be moved into
these layers.

You can use AutoClass e.g. to color 3DFACE terrain models, dissect
points according to their elevations, mark parcels by their lot
areas, block references by their attributes (e.g. price), or solids
by their volume.

List of preset properties:
- Length (e.g. LINE, POLYLINE, SPLINE)
- Area (e.g. POLYLINE, REGION, CIRCLE)
- Volume (3D solids)
- Elevation
- Thickness (3D)
- Rotation (blocks)
- Height (texts)
- Radius (circles, arcs)
- XScaleFactor (blocks)
- Measurement (dimensions)
- ConstantWidth (polylines, donuts)
- Perimeter (regions, circles)
- Centroid-z (3D objects - Z of their centroid)
- ptDistance (distance to reference point)
- refpointZ (Z of the reference point, centroid for 3DFACEs and 3DPOLYLINEs)
- numeric attributes (blocks)

You can change the layer prefix by setting the LISP variable:
   (setq _AUTOCLASSLAYERPREFIX "MYLASS")


Version history:
1.0: initial version
1.1: block attributes added, integer properties fixed
1.2: changed to freeware, color legend added
1.3: common ACI cOlor property


License: AUTOCLASS is a freeware utility by ARKANCE,
do not publish it online on other than ARKANCE's
web servers, do not sell, lend or exchange it.

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Contact:
Arkance Systems CZ s.r.o. (former CAD Studio)
Libalova 2348/1, 149 00 Praha, Czech Republic
info.cz@arkance.world   www.arkance.world   www.cadforum.cz
