I made this surface/Loft based on depth measurement from the shore.
The nodes of the short polylines are sea depth or Z-value every 5 meter of the shore.
X and Y are same coordinates for sea level.
The surface hopefully shows sea bottom.
This drawing is delivered as a 2d image on paper. But looking at the surface from top view does not give any clue about the structure of the sea bottom. Therefore I was looking for a "color scheme", as in picture a, which could be representative for depth variation.
Is this possible? My guess is that I would need some contours for that but how could I extract contours from my surface?
I am using MAP 3D 2008.
To use any of the styles in map for that you need to convert that AutoCAD surface into a Map raster surface. Do you have point file to go with that?
I have this surface to work with.
What do you mean by point file?
I just used polylines with 6 nodes.
I supposed I could extract these nodes/points.
So where do I go from here?
If you have Civil 3D I woudls and create a Civil 3D surface from the data not a vanilla AutoCAD surface. If nothing else get the trial version of 2011 Map3D and create raster surface from points for it.
I got the trial version of 3d MAP.
How should this PXY file be written?
Could you send me a sample of a .pxy?
I made a simple surface by 6 points from a .txt file but it does not look as smooth as the one made in 3d MAP 2008 by "Surface/Loft".