How to create a linear series of duplicate objects?

I’m looking for something that works like SpinDup but without the “Spin”, something that can be used for fenceposts, columns in a building, etc.

Is there an easy way to do this?

http://membres.lycos.fr/bobois/Tuts/DupliFrames/Modeling/modeling_with_duplifames_en_1.html

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The link Fligh % poseted doesn’t work for me.
Anyway, Dupliverts sometimes is the better choice.
A short HowTo:

Dupliframes option will add a copies of an object at every coordinate of another object’s vertices (shifted by the relative shift of the CenterPoints of both objects.)
Simple example:
Add a plane.
Add a sphere.
Make the plane parent of the sphere.
Check dupliverts in the AnimButtons (F7) of the plane.

That’s it.

Some hints.
The original object will be shown in the 3Dviewports but it will not be rendered.
You can convert the dupliverted object to real ones with Ctrl+Shift+A (parent (plane) selected).
The dupliverted objects will arrange around the child object (sphere)
To place them at the vertex positions of the parent, align the centers of parent and child.

Or simple:

Create your fence post. Go to edit mode. Select all vertices. Adjust offset. Click extrude repeat. Click in the 3dview.
Viola!
(you then have one mesh containing all the posts)

Daniel

Thanks to everyone who replied; “extrude repeat” is closest to what I was looking for.

Can you also do rotations (not just duplicate transations) using DupliVerts? (i.e. place a column at each point on a curve such that the object is perpendicular to the curve?)

This is better done with DupliFrames

Stefano