Commands

ARRAYCLASSIC command in AutoCAD : Creates arrays using the legacy dialog box

The following guide explains how to use the AutoCAD command ARRAYCLASSIC and offers practical, beginner-friendly instructions, alternatives, troubleshooting and a helpful FAQ.

Explications

The ARRAYCLASSIC command in AutoCAD provides a classic dialog-box interface to create repeated copies of objects in a regular pattern. It focuses on simplicity and familiarity, making it useful for users who prefer the legacy workflow or who are working on older projects.

Key capabilities of ARRAYCLASSIC:

  • Base Point: define a reference point for the array’s placement.
  • Spacing Control: set the distance between elements.
  • Row and Column Counts: specify numbers for rectangular arrays.
  • Angle Control: set the total angle or spacing angle for polar arrays.
  • Rotation Settings: choose whether items keep their orientation or rotate with the array.

Limitations to bear in mind:

  • No real-time preview in many versions (unlike the modern ARRAY command).
  • Fewer advanced options (no built-in path array type).
  • Some new object types or special entities may not behave as expected.

Detailed features and how they affect results

  • Base Point: determines the anchor and placement origin. Choosing a meaningful base point simplifies alignment and later edits.
  • Spacing: for rectangular arrays, spacing is measured between adjacent copies — distinguish between spacing and overall size.
  • Rows/Columns: integer counts only — plan counts before creating large arrays to avoid performance issues.
  • Polar Angle: define either the total angle to fill or the angle between items, depending on dialog options.
  • Rotation: enabling rotation makes items follow the radial orientation in polar arrays; disabling preserves original orientation.
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Step-by-step example (beginner-friendly)

  1. Activate the command:
    • Type ARRAYCLASSIC on the command line and press Enter.
  2. Select objects:
    • Click the object(s) you want to array, then press Enter.
  3. Choose the array type in the dialog:
    • For a rectangular array:
      • Enter the number of rows and columns.
      • Set row spacing and column spacing (distance between adjacent copies).
      • Choose a base point or pick one in the drawing.
    • For a Polar Array:
      • Define the center point (pick a point).
      • Enter number of items and either the total angle to fill or the angle between items.
      • Set rotation on/off depending on whether objects should rotate with the array.
  4. Preview (if available) and apply:
    • Click OK to create the array. If no preview is available, carefully check counts and spacing before confirming.
  5. Edit result as needed:
    • Use grips, move/copy, or convert to a block if you want single-entity behavior for performance or convenience.

Practical tip: before arraying large numbers of objects, consider converting the source object to a block — it often reduces file size and improves performance.

Alternative methods

  • Modern ARRAY command:
    • Access via the ribbon or type ARRAY. It supports rectangular, polar, and path arrays, plus real-time preview and associative arrays you can edit after creation.
  • Use -ARRAY (dash) for command-line-only interaction when scripts or automation are required.
  • Manual copying:
    • For simple repeated placements, use COPY with object snaps and multiple copies, or use COPYARRAY scripts if available.
  • Path arrays:
    • If you need to distribute objects along a spline or polyline, use the modern ARRAY (Path) or use tools like DIVIDE and BLOCK insertion as a workaround.
  • Scripting and LISP:
    • For repetitive advanced tasks, write a small LISP routine or script to generate custom arrays programmatically.

Common errors and fixes

  • Error: “Command not found” or typing ARRAYCLASSIC does nothing.
    • Fix: In some versions the command may not be exposed by default. Type ARRAY as an alternative. If you need the classic dialog, create an alias in acad.pgp or use a script/LISP to call the legacy routine. Also check that you are in a compatible workspace/profile.
  • Error: No preview or you cannot see changes before clicking OK.
    • Fix: This is a limitation of ARRAYCLASSIC in some versions. Double-check values or use the modern ARRAY for real-time preview.
  • Problem: Objects not included or some entities behave oddly after arraying.
    • Fix: Convert complex objects (like dynamic blocks, Annotative objects or proxies) into simple blocks or explode if necessary, or use the modern ARRAY which has better compatibility.
  • Problem: Spacing or counts are wrong.
    • Fix: Remember spacing is the distance between adjacent copies. Verify whether you are entering total extent vs spacing. Use a reference line or dimension to confirm.
  • Performance issues with very large arrays:
    • Fix: Convert repeated geometry to a block, use fewer elements, or generate the pattern in parts. Use REGEN or close/reopen file if viewport redrawing is slow.
  • Problem: Rotation/orientation wrong after polar arraying.
    • Fix: Toggle the rotation option in the dialog to preserve original orientation or let items rotate. If needed, edit individual copies afterward.
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Practical tips and best practices

  • Make the source object a block before creating a large array to improve performance and simplify edits.
  • Choose a meaningful base point (e.g., a corner, center or snap point) to make positioning predictable.
  • For precise spacing, create temporary construction lines or use dimensions to calculate spacing values.
  • If you need to edit the full array later, prefer the modern ARRAY command for associative editing.
  • Use layer isolation while creating arrays to avoid accidentally selecting other objects.
  • For pattern variations, create one array, then use COPY and TRANSFORM to adjust only a portion.
  • When working on legacy projects, test array creation on a small sample before applying to the full design.

Quick comparison: ARRAYCLASSIC vs Modern ARRAY

  • Interface: ARRAYCLASSIC = classic dialog box; ARRAY = ribbon and contextual grips.
  • Array types: ARRAYCLASSIC supports Rectangular and Polar; ARRAY supports Rectangular, Polar, and Path.
  • Preview: ARRAYCLASSIC often lacks real-time preview; ARRAY provides live preview.
  • Editing: ARRAY offers associative arrays that can be edited as a single object; ARRAYCLASSIC is more limited.
  • Advanced options: ARRAY offers extensive controls (path alignment, associative pattern editing, etc.); ARRAYCLASSIC focuses on simplicity.

FAQ

How do I enable ARRAYCLASSIC if it is not recognized by the command line?

If ARRAYCLASSIC returns “unknown command,” use the modern ARRAY command instead. If you specifically need the classic dialog, you can create an alias in acad.pgp that maps a custom name to the command, or add a short LISP or script to call a legacy routine if available. Check your AutoCAD version and profile: some workspaces hide legacy commands.

Can I edit an array created with ARRAYCLASSIC after creation?

Yes — you can edit individual copies (grips, move, erase) but ARRAYCLASSIC typically does not create an associative array that lets you change parameters for the entire pattern in one step. For associative, editable arrays, use the modern ARRAY command.

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Can I create a path array with ARRAYCLASSIC?

No. ARRAYCLASSIC supports rectangular and polar arrays only. To distribute objects along a polyline, use the modern ARRAY (Path) option or use DIVIDE/MEASURE + block insertion workarounds.

Why are some objects not duplicated correctly when I use ARRAYCLASSIC?

Complex entities such as dynamic blocks, annotative objects, external references (XREFs) or certain custom objects can behave unexpectedly. Convert or simplify the objects (e.g., explode or convert to simple blocks) before arraying, or use the modern ARRAY, which generally handles current object types better.

How do I stop or cancel an array operation if I made a mistake?

If you’re in the dialog and want to cancel, click Cancel or press Esc. If the array has been created and you want to undo, use Ctrl+Z or UNDO. If you need to remove only array copies, use selection and Erase.

Is ARRAYCLASSIC available in the latest AutoCAD versions?

It can be available or still callable via the command line in many versions, but it is less emphasized in newer releases where the ribbon-based ARRAY is the preferred tool. If not present, use ARRAY or add a custom alias.

Should I convert my arrayed geometry into a block?

Converting large patterns into a block can significantly improve performance, reduce file size, and simplify selection. However, converting to a block makes individual elements harder to edit. Choose based on whether you need per-item edits later.

Can I use ARRAYCLASSIC for 3D objects?

Yes, ARRAYCLASSIC can duplicate 3D solids and objects, but watch for rotation/orientation options; use 3D UCS or set appropriate base points. For complex 3D distribution along paths, the modern ARRAY or specialized tools may be more suitable.

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