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flood plain modelling [message #39251]

Sat, 01 May 2004 19:22

sab
Messages: 3
Registered: May 2004

Junior Member

Hi,

As a beginner envi programmer,
I'm trying to perform flood plane modelling from lidar data by
spcifying a range of elevations and a seed value, then do a fill to
create shapefiles of areas that may be inundated by a flood scenario.
I would like to do this for a very large data-set, preferably in batch
mode.

I have 2 queries one general the other specific.

1. General:
Any ideas as to the best approach to doing this? Should I try to look
for existing ENVI functions for the needed functionality or write my
own IDL routines?

2. Specific (maybe, i'll also post it as a separate msg):
So far it looks like REGION_GROW may be useful by creating a vector of
vertices representing a ROI. the next step would be to covert the ROI
to shapefile. Any functions in IDL/ENVI that cleanly allow this
conversion?

any help is greatly appreciated.

shoaib
--
s.burq@ugrad.unimelb.edu.au

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