I'm working on a permit where I need to diplay topographic contours, but have different maj/min intervals depending on the slope of the topography. To me, this seems a little strange and makes for misleading information, but it's what the permit requires. Is there an non-head-bashing way to do this? I'm covering a roughly 5000 x 5000 sq ft area with a partially built landfill on it and a rather changing surrounding topography. Not even sure where to start...
Solved! Go to Solution.
Here's my solution to the problem: http://civil3dplus.wordpress.com/2010/03/12/contou
Contour interval or contour label interval?
Ok, but I would think only labeling the majors in those areas would keep the clutter down. To paraphrase Laurie C from some years back..Sometimes you have to let go of old ways of doing things....
What is worse an area of closely spaced contours or and area where minor contours end abruptly ( that's me thinking out loud)
I totally understand the topography of different regions would have ridiculous minor contours and like your work around. Here on L.I. I hardly ever see a topo with more than 20 feet of change. I'm sure in the Rockies the contours can get hairy.
Thanks for the solutions. And yes, to clarify the contour intervals themselves are what are changing, i.e. there is a range where flat areas are to be shown at 1 and 5s, steeper at 2 and 5s, etc. I agree that the end result looks awkward, but I'm guessing the reviewers must not like too dense of contours because they're also requiring 1"=100' scaling.
Also, perhaps slope banding display styles could be used to figure out where to draw the boundary around where the slop changes? I am not sure if you can only do quantiles or also define a color to be in a specific range i.e. 0-3% instead of lowest quarter of slopes, but I will look to see if this is possible.
You may want to update that very helpful post for 2013. Should be a bit easier.
One more trick I found nice. Go to surface properties --> Analysis. Then specify slopes , create 3 ranges, hit the down arrow and type in your ranges, (for me it was 0-6%, 6-12% and 12%-vertical.). Hit apply and voila. You can even make a nice little table legend. I'm tracing roughly the boundary between colors to get my surface masks. (See image attached)
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