Enla
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Enla, engineer's Length and Area add-in.
Select lines, polylines, circles or hatches in Autodesk® AutoCAD® and have their length and area values in a list. You can also select solids, and have their volume or centroid.
Basic use:
- select, copy, zoom
- check values, to find the object you need
- insert into drawing, as MText, Text or (dynamic) Block
- export to TXT, CSV, or JSON
And of that will cover most of your daily needs.
Advanced use
- use the formula field to evaluate values received from objects with your own custom math expressions
- insert as combined text, next to each object, or pick a location
- insert (dynamic) blocks, with attributes filled with the result of functions
- override block position to match results of math expression
- override dynamic block properties such as flip parameters or visibility to match the result of expressions
To evaluate objects, use standard math expressions in the formula tab with optional Enla variables, read directly from the selected object:
| variable | description |
| L | length |
| A | area |
| V | volume |
| tag | custom text tag, saved to object in the drawing |
| n | position of the object within the list |
| cc | incremental value, number of clicks on the cumulative button |
| start | start point of line, polyline or similar |
| end | end point |
| center | center point of any object |
| centroid | centroid point, if available |
or group variables (for applicable functions)
| group variable | description |
| Lt | total length of all objects |
| Ls | length of objects selected in the list |
| At | total area of all objects |
| As | area of objects selected in the list |
Functions are standard math or logic functions, with the introduction of a few special
| function name | description |
| fx(n) |
group function returns an array of results of the previous function Important: to avoid circular definitions, all functions are calculated from top to bottom for each function in sequence |
| x(), y(), z() | get a single value out of point (start, end...) |
| val("any text") | evaluates text (useful for custom vars, since they are all text) |
| text(num,"0#") | apply custom formating, using custom strings |
Examples:
| sum(Lt) | sum of lengths of all objects |
| average(As) | average area of objects selected in the list |
| L * 100 / sum (Lt) | percentage of length in relation to the total length |
| L > average (Lt) | 1 or 0, compare how individual L relates to the average length |
Important:
- if some function accepts two parameters, they must be separated properly with either; or, sign, depending on your preset windows settings.
- remember the order of calculations (top to bottom, then left to right)
- take care, double check results - it may be not what you need, or it may be wrong altogether
關於此版本
版本 3.2.0, 2023/3/31
Added latest support. No change in version number.
This is the great application that most people need.