topic Re: Draw arrowhead without line in AutoCAD Forum

Draw arrowhead without line

julia.langeT5493 — Mon, 01 Mar 2021 07:33:21 GMT

Hi,

I would like to insert only arrowheads. Is this possible? I have tried to insert an "mleader" and to either change the landing distance or set the linewidth to 0.0 mm, but this does not work. I could just draw triangles as arrowheads, but maybe there is a more elegant solution.

My aim is to draw streamlines, thus creating curved lines and add the arrowhead at some positions.

I am looking forward to your proposals!

Kind regards,

Julia

Re: Draw arrowhead without line

imadHabash — Mon, 01 Mar 2021 07:36:48 GMT

Hi,

You can draw arrowhead with PLINE command ( Width option ) .

Command: PL PLINE
Specify start point:
Current line-width is 0.0000
Specify next point or [Arc/Halfwidth/Length/Undo/Width]: w
Specify starting width <0.0000>:

Specify ending width <0.0000>: .2

Specify next point or [Arc/Halfwidth/Length/Undo/Width]: <Ortho on>
Specify next point or [Arc/Close/Halfwidth/Length/Undo/Width]:

Re: Draw arrowhead without line

Alfred.NESWADBA — Mon, 01 Mar 2021 07:47:32 GMT

Hi,

You can create a block and then insert the block on top of the lines.

- alfred -

Re: Draw arrowhead without line

julia.langeT5493 — Mon, 01 Mar 2021 08:05:21 GMT

Thank you very much! The PL (PLINE) is much easier to handle than my rectangles...

😀👍

Re: Draw arrowhead without line

ВeekeeCZ — Mon, 01 Mar 2021 08:06:53 GMT

If you want to insert an arrowhead of dimstyle already in use, then arrowhead is automatically created block with name _Open30 or _Oblique, or DatumFilled... Look into the INSERT gallery for blocks with an underscore prefix.

Re: Draw arrowhead without line

Pointdump — Mon, 01 Mar 2021 09:51:16 GMT

Julia,
"My aim is to draw streamlines"
Using >>>Measure/Divide<<< with a triangle block will do this perfectly.
Dave

Re: Draw arrowhead without line

Alfred.NESWADBA — Mon, 01 Mar 2021 10:05:16 GMT

Hi,

>> Using >>>Measure/Divide<<< with [....]

OK, following up with this I would use a linetype with automatically showing the symbols along a line ;)))

- alfred -

Re: Draw arrowhead without line

Kent1Cooper — Mon, 01 Mar 2021 13:21:47 GMT

@julia.langeT5493 wrote:

.... to draw streamlines, thus creating curved lines and add the arrowhead at some positions. ....

If you mean equally-spaced positions, MEASURE or DIVIDE, or better yet a linetype definition or an associative ARRAY, would do. [The linetype and associative ARRAY approaches are better because the arrowheads will adjust their quantity and direction appropriately if you change the shape of the streamline.]

If you want to select locations that are not equally spaced, a routine could be written that would ask you to pick locations and would do the INSERTing of a Block for you, including aiming it in the direction of the streamline at that point. [I already have something that does that with Text labels, which could be modified easily enough.]