Formulas For Fields

[DavidMacomber]

Hi All,
Not sure this is the place to put this but here it goes.

I am working with mtext and would like to have it automatically grab either the x,y,or z position of the insertion point. I would like this to be a field that updates if it moves.

I was playing around with fields and the only way I could find out how to do it was to create an object (a point) and then have the field look at the position of the object.

I have these questions:
Is there a way to make it look at itself for the axis?
Is there a way to create a formula (under the Objects category) so it grabs the axis?

Thanks in advance for any help.

Dave

[Wanderer]

Hi All,
Not sure this is the place to put this but here it goes.

I am working with mtext and would like to have it automatically grab either the x,y,or z position of the insertion point. I would like this to be a field that updates if it moves.

I was playing around with fields and the only way I could find out how to do it was to create an object (a point) and then have the field look at the position of the object.

I have these questions:
Is there a way to make it look at itself for the axis?
Is there a way to create a formula (under the Objects category) so it grabs the axis?

Thanks in advance for any help.

Dave

Hi, Dave! Congrats on making your first post! We love field so much, we gave them their own subforum. So, I have moved your question from the CAD Management form to the AutoCAD - Fields forum for you, as you should get your best audience here.

Cheers!

[Tom Beauford]

Are you wanting to label the x,y,or z position of the Mtext or of another object?

Here's a simple example using a block:

;| Label for Point.
   PtLabel.lsp BY: TOM BEAUFORD
   ^P(or C:Label (load "PtLabel.lsp"));PtLabel
   BeaufordT@LeonCountyFL.gov
   Leon County Public Works/Engineering
==================================================================|;

(defun C:PtLabel (/ ATTDIA)
      (setq ATTDIA (getvar "ATTDIA"))
      (setvar "ATTDIA" 0)
      (command "._INSERT"
               "Pt_Coordinates"
               (getpoint "Pick Point: ")						;Insert pt
               (/ 0.1 (getvar "cannoscalevalue"))				;X Scale
;               (* (getvar "DIMTXT") (getvar "DIMSCALE"))	;X Scale (Alternate)
               ""							;Y Scale
;               ""				                	;Rotation
               (*(/(getvar "viewtwist")pi)-180)	;Rotation
               ""					        	;Easting
               ""					        	;Northing
      )
      (setvar "ATTDIA" ATTDIA)
      (entupd (entlast))
;      (command "._DDATTE" (entlast))
      (princ)
)

[DavidMacomber]

I am wanting the MText to label itself. If i move the Mtext to an elevation on any one of the axes then the Mtext will change as i move it.

Not real sure how to explain it but the MText would grab the x,y,or z of itself.
I know you can make it grab the info off of a point or other object but not sure if you can make it reference its own information.

[Tom Beauford]

I am wanting the MText to label itself. If i move the Mtext to an elevation on any one of the axes then the Mtext will change as i move it.

Not real sure how to explain it but the MText would grab the x,y,or z of itself.
I know you can make it grab the info off of a point or other object but not sure if you can make it reference its own information.

You would probably need to create the MText first so there would be an object for the field to get properties. Then replace the text with the field.

[cadtag]

Option B, create a point as the thing to locate, then GROUP it to the Field.

[Opie]

Option B, create a point as the thing to locate, then GROUP it to the Field.

Or make it a block and change from MText to an Attribute. Within the block editor, the attribute can have a block place holder field which allows it to reference the block's data once inserted.

[DavidMacomber]

Or make it a block and change from MText to an Attribute. Within the block editor, the attribute can have a block place holder field which allows it to reference the block's data once inserted.

I went with the block with a place holder in it to reference the attribute to.

Thanks for the help