Total Area Autocad Lisp |best| -

AutoLISP routines for "Total Area" are custom scripts designed to automate the calculation and summation of areas from multiple objects within AutoCAD. While standard AutoCAD commands like AREA allow for manual summation, LISP routines significantly reduce repetitive manual entry and minimize potential human errors. Core Capabilities of Total Area LISP Routines

Automated Summation: Instantly calculates the cumulative area of a selection set containing varied objects such as closed polylines, circles, ellipses, and splines.

Dynamic Annotation: Many routines, such as those discussed on AutoCAD Forums, can automatically place text labels showing the area of each individual object or the grand total within the drawing.

Unit Conversion: Specialized scripts can measure in one unit (e.g., millimeters) and output results in another (e.g., square meters) without manual formulas.

Auto-Updating Fields: Advanced routines create "Field Expressions" that automatically update the displayed total if the linked geometry is modified and the drawing is regenerated. Popular LISP Routines & Commands ESurvey Lisp Help: Collection of AutoLisp for Entity Area

Efficiency at Your Fingertips: The Power of Total Area AutoLISP in AutoCAD

In the world of professional drafting, speed and accuracy are the ultimate goals. While AutoCAD comes with built-in measurement tools, they often fall short when you need to calculate the cumulative area

of dozens of separate rooms or complex shapes. This is where

—AutoCAD’s specialized programming language—becomes a game-changer. Why Use an AutoLISP for Total Area? Standard AutoCAD commands like MEASUREGEOM

are excellent for single objects. However, if you need to find the total square footage of a building with 50 unique rooms, clicking each vertex manually is both tedious and prone to error. A "Total Area" LISP routine automates this by: Selecting Multiple Objects : Grabbing all polylines, hatches, or regions at once. Instant Summation

: Automatically adding the area of every selected object and displaying the total. Data Export

: Many routines can even paste the result directly into your clipboard or as text on your drawing. Top Tools for Calculating Total Area

If you aren't ready to write your own code, there are powerful pre-made tools available: TotalLength + / TotalArea : This popular plugin from the Autodesk App Store

allows you to select object types and get a comprehensive total of both length and area in seconds.

: A streamlined utility that measures the total area of hatches and polylines and copies the value directly to your clipboard for use in Excel or Word. : A free architectural toolkit that includes the

command, specifically designed to display areas in square meters ( ) instantly. How to Create Your Own Routine

You don't need to be a software engineer to use AutoLISP. You can create your own custom scripts using the Visual LISP Editor Open AutoCAD and type in the command line.

Write your script in the console window. A simple routine typically iterates through a selection set of "AcDbPolyline" or "AcDbHatch" objects and sums their Save the file as a and use the command to load it into any drawing. Practical Applications Cost Estimation

: Quickly calculate total flooring or roofing material needed. Zoning Compliance

: Ensure your total built-up area meets local regulatory limits. HVAC Sizing

: Determine the total volume or surface area for climate control calculations.

The Efficiency of Total Area LISP Routines in AutoCAD In the world of CAD drafting, precision and speed are the two pillars of productivity. While AutoCAD provides native tools like the command or the Properties

palette to find the square footage of objects, these methods often become tedious when dealing with dozens of scattered polylines. This is where

—specifically "Total Area" routines—becomes an essential asset for any serious drafter. The Problem with Native Tools

Manually calculating the sum of multiple areas in AutoCAD is prone to human error. Using the standard total area autocad lisp

command requires the user to select objects one by one, adding them to a running total. If you accidentally click the wrong point or miss a small polygon, you often have to start over. For large-scale projects like floor plans or site surveys, this manual entry is a significant bottleneck. How LISP Solves It

A "Total Area" LISP routine automates this calculation. Once loaded, the script allows a user to simply select a group of closed polylines, circles, or regions. The code then iterates through the selection set, extracts the area property of each entity, and calculates a grand total in seconds. The true power of these routines lies in their customization . A well-written LISP can: Convert Units:

Automatically switch between square inches and square feet or hectares. Place Text:

Automatically insert the total area value as a text label directly into the drawing. Filter Objects:

Calculate only the areas of objects on a specific layer, ignoring everything else. Workflow Integration

Integrating a Total Area LISP into a daily workflow is seamless. By adding the script to the "Startup Suite," the command becomes a permanent part of the user's toolkit. Instead of juggling a calculator and a notepad, a drafter can type a shortcut like

(Total Area), window-select a whole building wing, and immediately see the result in the command line or an alert box. Conclusion

The Total Area LISP is a prime example of why AutoCAD remains a dominant force in design; its open architecture allows users to build the tools they need. By automating repetitive math and reducing the risk of manual error, these scripts allow designers to spend less time on arithmetic and more time on actual design. sample code for a basic Total Area LISP, or help you troubleshoot an existing one?

Calculating Total Area of Multiple Objects in AutoCAD using Lisp

AutoCAD is a powerful computer-aided design (CAD) software that offers a wide range of tools and features to create, edit, and manage 2D and 3D models. One of the common tasks in AutoCAD is to calculate the total area of multiple objects, such as rooms, buildings, or landscapes. While AutoCAD provides a built-in AREA command to calculate the area of a single object, it can be tedious to calculate the total area of multiple objects manually.

This is where Lisp comes in – a programming language that allows you to create custom functions and automate repetitive tasks in AutoCAD. In this article, we will explore how to write a Lisp program to calculate the total area of multiple objects in AutoCAD.

The Code

Here is the Lisp code that calculates the total area of multiple objects:

(defun c:totalarea ()
  (setq total-area 0)
  (setq ss (ssget "X"))
  (if (/= ss nil)
    (progn
      (setq i 0)
      (repeat (sslength ss)
        (setq ent (ssname ss i))
        (setq area (cdr (assoc 41 (entget ent))))
        (if (/= area nil)
          (setq total-area (+ total-area area)))
        (setq i (+ i 1)))
      (princ (strcat "Total Area: " (rtos total-area 2 2) " sq. units"))
    )
  (princ)
)

Let's break down the code:

(defun c:totalarea () defines a new Lisp function called c:totalarea.
(setq total-area 0) initializes a variable total-area to 0. This variable will store the total area of all objects.
(setq ss (ssget "X")) gets a set of all objects in the drawing using the ssget function with the "X" filter, which selects all objects.
(if (/= ss nil) checks if the set of objects is not empty.
(progn ...) is a block of code that executes if the set of objects is not empty.
(setq i 0) initializes a counter i to 0.
(repeat (sslength ss) ...) loops through each object in the set.
(setq ent (ssname ss i)) gets the current object in the set using the ssname function.
(setq area (cdr (assoc 41 (entget ent)))) gets the area of the current object using the entget function, which returns a list of the object's properties. The assoc 41 function finds the area property (which is stored in the 41st attribute of the object).
(if (/= area nil) ...) checks if the area is not nil (i.e., the object has an area).
(setq total-area (+ total-area area)) adds the area of the current object to the total area.
(princ (strcat "Total Area: " (rtos total-area 2 2) " sq. units")) prints the total area to the command line using the princ function. The rtos function converts the total area to a string with two decimal places.

How to Use the Code

To use this Lisp code in AutoCAD, follow these steps:

Open AutoCAD and create a new drawing or open an existing one.
Type AP in the command line and press Enter to open the Load/Unload Applications dialog box.
Click the "Load" button and navigate to the Lisp file (e.g., totalarea.lsp).
Click "Open" to load the Lisp file.
Type c:totalarea in the command line and press Enter to run the Lisp function.
Select all objects for which you want to calculate the total area using the standard AutoCAD selection methods (e.g., window, crossing, etc.).
Press Enter to execute the function.

The Lisp function will calculate the total area of all selected objects and print the result to the command line.

Conclusion

In this article, we explored how to write a Lisp program to calculate the total area of multiple objects in AutoCAD. The code provided can be easily modified to suit specific needs, such as calculating the total area of objects with specific properties (e.g., by layer, color, etc.). With this Lisp function, you can automate the process of calculating total areas in AutoCAD and save time and effort.

In AutoCAD, calculating the total area of multiple objects—like polylines, circles, or regions—can be tedious if done manually using the standard AREA command. AutoLISP routines automate this by summing the areas of all selected objects and displaying the result instantly. How to Use a "Total Area" LISP Routine

Obtain the Code: You can find various versions of this script online, such as those from Lee Mac Programming or JTB World. Load the LISP: Open AutoCAD and type APPLOAD in the command line. Navigate to your .lsp file and click Load.

Alternatively, drag and drop the .lsp file directly into the AutoCAD drawing window.

Run the Command: Most "Total Area" scripts use commands like TAREA, AREAM, or QSTA.

Select Objects: Select the closed polylines, circles, or hatches you want to measure. The routine will calculate the sum and display it in the command line or an alert box. Popular LISP Routines for Area Calculation Command Functionality TAREA AutoLISP routines for "Total Area" are custom scripts

Displays the total area of selected circles, ellipses, polylines, and splines at the command line. Lee Mac Programming AREAM

Measures total area of many objects at once and reports the total to the command line. JTB World SAL Calculates total area and sums it specifically by layer. CADTutor AMO

Adds the area of multiple objects and places a text label with the area at each object’s center. ESurveying A2F

Creates an MText object with a Field Expression that automatically updates if object boundaries change. Arkance Community Key Benefits of Using LISP for Areas

An AutoCAD LISP for "Total Area" is a custom script used to automate the summation of areas from multiple selected objects, such as closed polylines, circles, and hatches . While standard AutoCAD commands like

require selecting objects one by one, a LISP routine allows for a single selection of dozens or hundreds of entities to get an instant total. Autodesk Community, Autodesk Forums, Autodesk Forum Common Total Area LISP Routines

Several popular LISP routines are widely used by professionals to streamline these calculations: Total Area (TAREA): A lightweight routine by Lee Mac Programming

that sums the areas of selected objects and displays the result directly in the command line. AreaM (AREAM): Developed by Jimmy Bergmark at

, this script calculates the total area of various selected objects and is often paired with the command for complex drawings. Area to Field (A2F): Another popular Lee Mac routine

that doesn't just calculate the sum but creates an auto-updating MText field. If you modify the original object, the total area value updates automatically. MultiArea: A routine from ESurveying

that calculates the total area and automatically places a text label with the individual area at the centroid of each selected object. Lee Mac Programming How to Use a Total Area LISP To use these routines, you typically follow these steps: Download/Create the File: Save the LISP code as a file (e.g., TotalArea.lsp Load into AutoCAD: in the command line, select your file, and click "Load". Run the Command: Type the specific shortcut defined in the code (commonly Select Objects:

Use a window selection to grab all the closed polylines or circles you need to measure. Lee Mac Programming Typical Features and Capabilities

In the daily grind of drafting and quantity surveying, calculating areas from polylines can be one of the most repetitive and error-prone tasks. Standard AutoCAD commands (like AREA with the Object option or LIST) are functional but limited—they only give you one area at a time, and they don't sum multiple selections.

This is where Total Area Lisp routines shine. They are not "official" AutoCAD tools, but rather community-created scripts that fill a massive gap in the software’s functionality. Here is a review of why they are essential, how they work, and their pros and cons.

The Code: `TOTAREA.LSP`

Copy the following text exactly into a blank Notepad file. Save it with the name TOTAREA.LSP (ensure the extension is .lsp, not .txt).

;;; TOTAREA.LSP - Calculate total area of selected objects
;;; Command: TOTAREA
;;; Supports: LWPOLYLINE, CIRCLE, ELLIPSE, SPLINE, REGION, HATCH
(defun C:TOTAREA ( / ss total area obj_name obj_list i ent)
(princ "\nSelect objects to calculate total area: ")
;; Step 1: Create a selection set
(setq ss (ssget '((0 . "LWPOLYLINE,CIRCLE,ELLIPSE,SPLINE,REGION,HATCH"))))
;; Step 2: Exit if nothing is selected
(if (null ss)
(princ "\nNo valid objects selected.")
(progn
(setq total 0.0)      ; Initialize total to zero
(setq i 0)            ; Initialize counter
  ;; Step 3: Loop through each object in the selection set
  (repeat (sslength ss)
    (setq ent (ssname ss i))        ; Get entity name
    (setq obj_name (cdr (assoc 0 (entget ent)))) ; Get object type
;; Step 4: Calculate area based on object type
    (cond
      ;; For Polylines, Circles, Ellipses, Splines
      ((member obj_name '("LWPOLYLINE" "CIRCLE" "ELLIPSE" "SPLINE"))
       (command "_.AREA" "_Object" ent)
       (setq area (getvar "AREA"))
      )
      ;; For Regions
      ((equal obj_name "REGION")
       (setq area (vla-get-area (vlax-ename->vla-object ent)))
      )
      ;; For Hatches
      ((equal obj_name "HATCH")
       (setq area (vla-get-area (vlax-ename->vla-object ent)))
      )
    )
;; Step 5: Add area to total
    (if area
      (setq total (+ total area))
      (princ (strcat "\nWarning: Could not compute area for object " (itoa i)))
    )
    (setq i (1+ i))    ; Increment counter
    (setq area nil)    ; Reset area variable
  ) ; end repeat
;; Step 6: Display the result
  (princ "\n=========================================")
  (princ (strcat "\n>>> TOTAL AREA: " (rtos total 2 2) " square units <<<"))
  (princ "\n=========================================")
) ; end progn

) ; end if
(princ) ; Clean exit
)

Conclusion: Why Every AutoCAD User Needs a Total Area LISP

If you regularly calculate floor areas, site coverage, landscaped zones, or material quantities, a total area LISP is not a luxury—it is a productivity multiplier. The time saved in a single week of drafting will pay back the 10 minutes it takes to find or write a basic routine.

Key Takeaways:

The simplest total area LISP can be written in 5 lines of code.
Advanced versions add unit conversion, annotations, and error handling.
Always verify your drawing units and polyline closure before trusting the output.
Save your LISP in the Startup Suite for frictionless use.

So stop adding areas manually or using clunky workarounds. Copy the TOTAREA code above, load it right now, and watch your efficiency soar. Your future self—and your deadlines—will thank you.

Have a specific total area calculation challenge? Modify the LISP to fit your exact workflow, and you’ll wonder how you ever drafted without it. Let's break down the code:

Option C: Display in Multiple Units (The Professional Version)

This version shows your total in Square Meters and Square Feet simultaneously:

(setq sq_meters total)
(setq sq_feet (* total 10.7639))
(princ (strcat "\n>>> TOTAL: " (rtos sq_meters 2 2) " Sq. M. | " (rtos sq_feet 2 2) " Sq. Ft. <<<"))

Step 1: Define the command

(defun C:MYAREA ( / ss total obj area cnt)

Notes:

Area is calculated in current drawing units
For polylines, they must be closed
Lines and arcs are temporarily converted to regions
Hatches must have a valid area boundary

This LISP routine provides a complete solution for calculating total area from multiple selected objects in AutoCAD.

For calculating the total area of multiple objects in AutoCAD, a high-quality AutoLISP routine is the most efficient method compared to the native, tedious manual selection process Autodesk Community, Autodesk Forums, Autodesk Forum Recommended LISP: AreaM (by Jimmy Bergmark)

This is a widely used and reliable routine for summing the areas of various closed objects. Autodesk Community, Autodesk Forums, Autodesk Forum Capabilities : Calculates the total area of selected How to Use AreaM.lsp code into a text file and save it with a extension. Drag and drop the file into your AutoCAD window or use the

in the command line, select your objects, and press Enter to see the total area. WordPress.com Advanced Option: Lee Mac's Total Area

For users needing precision and support for modern AutoCAD features, Total Length & Area program is a standard in the industry. Lee Mac Programming

: Displays total area at the command line with precision based on your system variable. Flexibility

: It filters out non-area entities like open polylines to ensure accuracy. Lee Mac Programming Detailed Pieces & Automation

If you need more than just a total sum, consider these specific tools: Area Tables

: To generate a table listing each individual area alongside the total, use the Area Table Lisp ) which labels each polygon. Automatic Text Labels

routine from ESurveying creates text at the centroid of each selected object, showing its specific area plus the grand total. Triangle Details

: For land surveying or verifying calculations manually, the command splits polygons into triangles and provides a detailed table of calculation for each piece. Autodesk Community, Autodesk Forums, Autodesk Forum Native Alternatives (No LISP Required) Lisp to calculate area of all closed polylines selected

Calculating total areas in AutoCAD often involves a tedious "add one by one" process with the native

command. AutoLISP routines automate this by summing multiple objects instantly and even exporting results to tables or Excel. Popular LISP Commands for Total Area

Different routines offer various levels of automation, from simple command-line totals to complex reporting:

: A widely used routine (often attributed to Jimmy Bergmark) that calculates the total area of all selected objects at once. It works on polylines, circles, ellipses, and splines. A2F (Area to Field)

: Creates an MText object containing a dynamic "Field Expression". If you modify the original shapes, the total area updates automatically after a AMO (Add Multiple Objects)

: Measures total area and automatically places text indicating the area at the centroid of each individual polygon. Area Table (AT)

: Calculates areas for multiple plots and automatically generates a structured AutoCAD table. RTR (Read Triangle Area)

: For detailed surveying, this command splits polygons into triangles and provides a table showing the calculation for each. Autodesk Community, Autodesk Forums, Autodesk Forum Core Logic: How the LISP Works

Most total area LISPs follow a similar logic structure to process multiple selections: Lisp to calculate area of all closed polylines selected 02-Apr-2019 —

The Problem: Why You Need This

If you have ever had to calculate the total carpet area of a floor plan consisting of 50 separate rooms, you know the pain. Without a Lisp routine, you have three bad options:

Use the AREA command and click 4 corners for every room (tedious and inaccurate).
Select a polyline, write down the area, grab a calculator, and repeat 50 times.
Use the _AREA > Add command, which requires constant clicking and is easy to mess up.

Total Area Autocad Lisp |best| -

Total Area Autocad Lisp |best| -

The Code: TOTAREA.LSP

Conclusion: Why Every AutoCAD User Needs a Total Area LISP

Option C: Display in Multiple Units (The Professional Version)

Step 1: Define the command

Notes:

The Problem: Why You Need This

The Code: `TOTAREA.LSP`