topic Using hatchgenerateboundary in AutoCAD Forum

Using hatchgenerateboundary

Anonymous — Tue, 30 Mar 2021 04:48:39 GMT

I have a large number of nonassociated hatches on separate auotcad layers. When I use HATCHGENERATEBOUNDARY, the polylines generated do not retain the original hatch layer names. Is there a way to ensure that this happens?

When I select all the hatches in the drawing and then run the command, it creates polylines on a single layer and not the individual hatch layers as I would have expected.

Re: Using hatchgenerateboundary

imadHabash — Tue, 30 Mar 2021 04:51:01 GMT

Hi,

>> it creates polylines on a single layer and not the individual hatch layers as I would have expected.

It depends on your current layer name .

Re: Using hatchgenerateboundary

Alfred.NESWADBA — Tue, 30 Mar 2021 06:07:25 GMT

Hi,

>> creates polylines on a single layer and not the individual

>> hatch layers as I would have expected

They are generated on the current layer and this was never different, why are you expecting that the boundaries generated on the hatch-layer? If you had this previously then you most probably have used a tool which did this.

It could be an idea for sending this to AutoCAD using the >>>product feedback site<<<

- alfred -

Re: Using hatchgenerateboundary

ВeekeeCZ — Tue, 30 Mar 2021 06:44:13 GMT

If you have just a few layers just isolate each layer first and run hatchreg... for each. Else you would need to use some custom routine, a LISP.

Re: Using hatchgenerateboundary

Anonymous — Thu, 08 Apr 2021 00:40:45 GMT

Ok so I would have expected that a global command like hatchgenerateboundary would create a boundary associated with the hatch layer by hatch layer name. It just seems logical although I must admit I've little experience with AutoCAD and that my background is GIS. So my main issue is being able to convert nonassociative hatches into something GIS can use and in general designers don't seem to create hatch boundaries which make the conversion process tedious.

Re: Using hatchgenerateboundary

Alfred.NESWADBA — Thu, 08 Apr 2021 07:16:01 GMT

Hi,

>> create a boundary associated with the hatch layer by

>> hatch layer name. It just seems logical

Not really, if you look how hatches are generated ... they are also not automatically created on the layer of the surrounding object (even more complex, the objects building the border could be sitting on multiple layers).

AutoCAD generally creates objects always on the active layer. AutoCAD verticals do this different for their types of objects, also AutoCAD has a special setting e.g. for dimension to have a layer predefined, but these are exceptions).

>> So my main issue is being able to convert nonassociative

>> hatches into something GIS

Take care! Using this command to create polylines is not going to work ... if hatches have islands then you get multiple polylines, but as polylines you don't know any more which ones are outer borders and which ones are island borders.

- alfred -