Question: How do you overlay images in AutoCAD?

What does overlay do in Autocad?

Attachments and overlays are referenced to host drawing files. The attachment or overlay imported into the host drawing comes from a source file. The attach command inserts external references and graphics into drawing files. Xref attachments require an attachment and a path type.

What is the difference between overlay and attach in Autocad?

Attachment: Saves a copy of the xref drawing in your drawing. Overlay: Creates a link to the xref drawing in your drawing.

How do you overlay layers in Autocad?

To Overlay Two Feature Layers

1. Connect to the features sources to compare.
2. Analyze tab Feature panel Feature Overlay Find.
3. On the Overlay Analysis – Source and Overlay Type Page, specify the following: …
4. Click Next.
5. On the Set Output and Settings Page, specify the following: …
6. Click Finish to perform the Overlay.

How do you overlay two drawings?

To add a specific region of a drawing instead of the entire page, go to Document > Overlay Pages > Modify. From the dialog box, click Select Region and click and drag your mouse across the area of the drawing that you want to include in the overlay. Click OK.

What is an xref overlay?

An attached XREF is attached to the file and will follow it into future XREF’s. The overlay is like a transperancy and does not follow if the new file is used as an XREF. If DWG “A” is XREF’d into DWG “B” as an attachment, when you XREF DWG “B” into another file it will bring the XREF of DWG “A” with it.

What is difference between attachment and overlay?

Attachment: Saves a copy of the xref drawing in your drawing. Overlay: Creates a link to the xref drawing in your drawing.

How do you make an overlay xref?

To Overlay an Xref

1. Click .
2. In the Select Reference File dialog box, select the file you want to attach and then click Open.
3. In the External Reference dialog box, under Reference Type, select Overlay.
4. Specify the insertion point, scale, and rotation angle. Click Specify On-Screen to use the pointing device. …
5. Click OK.

How do I insert one AutoCAD drawing into another?

To Insert a Drawing File as a Block by Dragging

1. From Windows Explorer or any folder, drag the drawing file icon into the drawing area. When you release the button, you are prompted for an insertion point.
2. Specify the insertion point and scale and rotation values.

How do I overlay two DWG files?

Insert an Overlay

1. Click Insert tab Reference panel Attach. …
2. In the Select Reference File dialog box, select the file you want to attach and click Open.
3. In the Attach External Reference dialog box, under Reference Type, select Overlay.

What are overlay drawings in construction?

Drawing one plan over another (on the same sheet or on layered transparent sheets) is a way of testing three-dimensional relationships. Overlays are also used as a compositional technique in presentation drawings, although this can get out of hand, resulting in confusion.