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AutoCAD Productivity

Layer Previous

by Michael Beall

From: AutoCAD Productivity Articles #132
Originally published: February 2014

PreviousLayers are the lifeblood in AutoCAD, and efficient management thereof is the key to your own quality of life; specifically, your sanity.

The Layer Previous button can be a real time saver and is, at its core, a Layer-specific ‘Undo’.

How to Use Layer Previous

  1. Open a drawing, then make a new layer [MC_FEB2014], give it a color and make it current; this will be our testing layer.

  2. Change the Color of any other layer in the current drawing, but don't make that layer current.

  3. On our test layer, draw a small rectangle somewhere.

  4. Click Layer Previous and the rectangle remains, but the color of the layer you changed is restored.

  5. Freeze several existing layers, then Rotate the rectangle.

  6. Click Layer Previous and the previously frozen layers are thawed… but the rectangle is still rotated!

See all the articles published in February 2014

Michael's Corner

Between 2003 and 2016, Michael Beall (and one or two guests) wrote almost 600 articles for CADTutor. The focus of these articles is AutoCAD productivity, and although some of them are now more than a few years old, most remain relevant to current versions of AutoCAD. The article above is just one example. Check out Michael's Corner for a full listing.

Tip of the Day

Absolute and Relative Coordinates

Coordinate Interpretation
25,75 depends on context
@25,75 relative
#25,75 absolute

It used to be very simple. Enter a coordinate and AutoCAD interpreted it as an absolute coordinate. Enter a coordinate preceded by "@" (the at sign) and AutoCAD interpreted it as a relative coordinate. This simple rule changed when dynamic input was introduced and now the interpretation of coordinates is contextual. For example, when you draw a rectangle using RECTANG, the coordinate for the second point is interpreted as absolute with dynamic input turned off and as relative with dynamic input turned on. Really, try it and see.

Fortunately, there's a new coordinate prefix that forces an absolute coordinate, even when AutoCAD decides you want a relative one. Precede any coordinate with "#" (the hash sign) to force an absolute coordinate.

Today's tip is by dbroada

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