AutoCAD Civil 3D

[#1]

I'm trying to create an alignment label to display profile elevations at regular stations.  Two questions:

1.  I use an expression to set the text height.  When I add a regular text component in the label this works fine, but when I add reference text I can't seem to use the expression as text height.

2. I want to use an expression to 'Truncate' the elevation, so that 178.35m displays as 78.35.  I can't find a way to create an expression to do this (within the Alignment station labels).

Thanks for any suggestions.

[#2]

Any ideas? Anyone?

How do you display design road elevations in plan?

[#3]

I attempted your first question myself in Civil 3D 2012 and also found that expressions can't be used to control text height of referenced objects. I'm assuming that due to the variety of objects that you can reference, expressions can't be written to control certain types of objects.

As to your second point, we have a style for top of curb elevations that does exactly what you want, except we truncate down to the ones, not tens. I'd assume your expression would look like:

{Station Value}-100(*TRUNC({Station Value}/100))

Add this to the expressions under Alignments ->Label Styles->Station->Major Station. Format it as a Station, and add it to your label style. You may want to only show the right side of the "+" sign if that's all you want to see.

[#4]

Thanks!

I'm a little confused about this part:

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cfarrow wrote:

.... 

As to your second point, we have a style for top of curb elevations that does exactly what you want, except we truncate down to the ones, not tens. I'd assume your expression would look like:

{Station Value}-100(*TRUNC({Station Value}/100))

Add this to the expressions under Alignments ->Label Styles->Station->Major Station. Format it as a Station, and add it to your label style. You may want to only show the right side of the "+" sign if that's all you want to see.

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Elevation, or Station? I can get Station to work, but it's Elevation I'm looking for.

[#5 · Accepted solution]

Oh, I'm sorry. I misread your original request. Scratch my last reply. Try this one:

{Profile Elevation}-100*(TRUNC({Profile Elevation}/100))

Add it to your Profile expressions, and add a reference text to your station labels. The only downside is you have to individually select each station (by CTRL-clicking) and tell it the reference object. I don't know of a better way to reference a profile for the entire station label set.

Did that answer your question?

[#6]

Also, I suppose you could CTRL-click all of the labels in the group and give them all the same object to reference, I just wish you could select the station group itself and add an object as a reference.

[#7]

Cool, thanks!  I had no idea you could put an expression in the profile label family, and refference that expression from the alignment label.  I was looking for somewhere in the alignment label to create the expression.

Don't know why it has to be such a pig to use it!  The 'Profile Geometry Points' works beautifully—you set the profile right within the alignment labels dialogue.  For these ones you have to Ctrl+click, then go to properties.  For some reason the properties box doesn't have a pull-down, you have to click on a button, then right-click in the drawing and select from a list.  And this is a list of all profiles, not just ones on that alignment!  Seriously, I can pull the elevations from one street and display them as alignment labels on a totally different street?

For anyone else reading, the accepted solution is only a solution for my second question.  Still wondering about the first.

(I used FLOOR instead of TRUNC.  When I was setting up feature line labels the TRUNC didn't work as expected, so I didn't even try it here.  FLOOR worked.)