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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | Re: [gislist] Generating perpendicular lines |
| Date: |
12/08/2004 07:35:01 AM |
| From: |
Lucius Koshy - AlbireoSTS, Inc. |
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Cynthia,
I ran your comments by our CTO, Dr. M. Srikanth and below are his =
comments,
Interesting problem, yes this should be easily possible to develop the =
the script if the stream line is single. If the stream is indicated as =
double line, a central line is to drawn first.=20
There is no ready script with us. A small routine / a scipt (MapObjects, =
mapx) can be created so that it takes the starting point of the center =
line as start node and at a pre-defined regular distance from that =
point, the program can create a line perpendicular to the stream's =
central line. This line will cut across the stream at 90 degrees at =
every point. These lines can then be exported to their modeling software =
for creating cross sections (ground profiling).
Let me know if you would like us to assist you further with your needs.
Luc
Lucius "Luc" Koshy
AlbireoSTS
105 Nobel Court
Alpharetta,
GA 30005
Ph : 678-254-1000 Ext 315
Fax : 678-254-1038
Cell : 305-992-0608
E_mail: luc@albireosts.com
Web Site: www.albireosts.com
SPATIAL TECHNOLOGY SOLUTIONS FOR ENTERPRISE NEEDS
----- Original Message -----=20
From: "True, Cynthia D." <truecd@missouri.edu>
To: <gislist@lists.geocomm.com>
Sent: Tuesday, December 07, 2004 11:06 AM
Subject: [gislist] Generating perpendicular lines
We are looking for a way to generate lines perpendicular to a stream.
We need a systematic way to input a set distance and add nodes along the
line at that distance then generate perpendicular lines on both sides of
a stream. Does anyone know of an AML, Avenue script, or VB script that
will do this? We want to automate our input to HEC-GEORAS for the
"cross-sections".
Thank you,
dt
C. Diane True
Missouri Resource Assessment Partnership
http://www.cerc.usgs.gov/morap/=20
(USA voice) 573-441-2794
"For if one link in nature's chain might be lost, another might be
lost, until the whole of things vanishes by piecemeal." - Thomas
Jefferson
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