Myles,
Vertical Mapper can solve your problem. This is a fast three step process
where the first step is to use the Poly-to-Point utility to generate a point
file from the contour lines. Next, with one of the five interpolation
techniques you can create a grid surface representing the elevation
information. Finally, the Point Inspection utility is implemented which
creates a new column in your man hole cover point file and updates it with
the elevation value from the grid. I have done this many times before and
it generally takes about twenty minutes.
James Harvie
Vertical Mapper Product Manager
Northwood Geosience Ltd.
43 Auriga Drive, K2E 7Y8
Nepean, Ontario, Canada
613-224-2020
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of
[EMAIL PROTECTED]
Sent: Thursday, March 30, 2000 3:11 PM
To: [EMAIL PROTECTED]
Subject: MI Contour Line Query
Any assistance on this would be greatly apprciated.
I have a table of manholes (with co-ordinates) but don't have any ground
levels.
(Manholes are drawn as dots)
I have a table of contour lines (topographical lines of elevation) (The
contour
lines are drawn as polylines imported from CAD)
Does anyone know of a method in which I can query out the contour line
closest
to a manhole and then update the ground level data in the manhole table with
the
elevation in the contour line table?
Thanks in Advance.
Myles
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