2004

Modify Objects | 383
The radius of the array is determined by the distance from the specified
center point to a reference or base point on the last selected object. You can
use the default reference point (usually an arbitrary point that coincides with
a snap point), or you can specify a new base point to be used as the reference
point.
Array in 3D
With
3DARRAY, you can create a rectangular array or a polar array of objects
in 3D. In addition to specifying the number of columns (X direction) and
rows (Y direction), you also specify the number of levels (Z direction).
Limit the Size of Arrays
If you specify a very large number of rows and columns for an array,
AutoCAD may take a long time to create the copies. By default, the number
of array elements that can be generated by one command is limited to
100,000. This limit is controlled by the MaxArray setting in the registry. You
can change the limit by setting the MaxArray system registry variable using
(setenv “MaxArray” “n”) where n is a number between 100 and 10000000
(ten million).
Note When changing the value of MaxArray, you must enter MaxArray with
the capitalization shown.
To create a rectangular array
1 From the Modify menu, choose Array.
2 In the Array dialog box, choose Rectangular Array.
3 Choose Select Objects.
The Array dialog box closes and AutoCAD prompts for object selection.
4 Select the objects to be arrayed and press
ENTER.
5 In the Rows and Columns boxes, enter the number of rows and columns
in the array.
6 Specify the horizontal and vertical spacing (offsets) between objects by
using one of the following methods:
■ In the Row Offset and Column Offset boxes, enter the distance between
rows and between columns. Adding a plus sign (+) or a minus sign (-)
determines direction.
■ Click the Pick Both Offsets button to use the pointing device to specify
the diagonal corners of a cell in the array. The cell determines the ver-
tical and horizontal spacing of the rows and columns.