Peter,
In Vertical Mapper the slope for a grid node is calculated by averaging the
slopes of the eight triangle faces that are formed from the surrounding
nodes. The average is taken so that the resulting slope value is not overly
influenced by "flyers" in the dataset. I hope this helps.
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: Wednesday, November 24, 1999 9:37 PM
To: [EMAIL PROTECTED]
Subject: MI VM Slope Analysis
A question to all you Vertical Mapper experts.
When performing a slope analysis it would appear that VM calculates slope
(degrees or percent, it doesn't matter) by dividing vertical displacement by
slope distance.
Whereas, in Australia we calculate slope by dividing vertical displacement
by horizontal distance.
Is this normal or is VM incorrectly calculating slope?
Regards
Peter Graham
WS Group - Mackay
Ph: +61 (07) 4951 2911
Fx: +61 (07) 4953 1319
Em: [EMAIL PROTECTED]
Web: www.wsgroup.com.au
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