NUMSC-bgol (Batch Numeric Text Scaler)

Command Type: AutoLISP routine (works in AutoCAD, BricsCAD, ZWCAD and most AutoLISP-compatible CAD platforms)
Developed by: BGol Community, bgol.in

Inspired by the general concept of batch numeric-text calculators used in CAD drafting. This is an original, independently written routine, new file name, new command name, new source code, created so the CAD community has a free, editable, open-source alternative.

Overview

NSCL selects multiple text entities holding numeric values and applies the same arithmetic operation to all of them in a single command run, multiply, add, subtract, or divide by a value you choose.

How to Use

1. Load NUMSC-bgol.lsp into your CAD session (drag-and-drop the file onto the drawing window, or use the APPLOAD command).
2. Type NSCL at the command line and press Enter.
3. Select one or more TEXT/MTEXT entities containing numeric values.
4. Press Enter to finish selection.
5. Choose an operator at the prompt: Multiply / Add / Subtract / Divide (default is Multiply).
6. Enter the operand (the number to apply).
7. Every selected text's numeric value is recalculated and updated in place, to 4 decimal places.

Why Use It

• Batch calculation, applies the same operation to many text values at once, instead of manually recalculating and retyping each one.
• Accuracy, removes manual arithmetic errors when applying a common adjustment across multiple values.
• Flexible, one command covers multiply, add, subtract, and divide, chosen at run time.

Where to Use It

• Scaling elevation, dimension, or measurement values by a conversion or correction factor.
• Applying a uniform offset (add/subtract) to a batch of survey readings.
• Any batch numeric text-editing task needing the same operation applied consistently across many values.

Notes

• Non-numeric or blank text entities in the selection are silently skipped.
• Output precision is fixed at 4 decimal places; edit the decimals variable in C:NSCL to change it.
• Division by zero is guarded, the original value is kept unchanged.
• Source code is fully open, feel free to study, modify, and redistribute it under the same open, free-for-all spirit.

Credits

Developed and shared for the CAD community by BGol Community. Website: https://bgol.in/ Free and open-source, use it, modify it, share it, for personal or commercial work alike.