gis-l: Measuring Height w/ ArcPad

Grasel, Peter Peter.Grasel at dep.state.fl.us
Thu Sep 17 08:27:57 EDT 2009


Hi Rene,  this question brings to mind something I did a couple of years ago
for the solid waste program.  We were discussing converting vertical datums
from NGVD29 TO NAD83, no trivial matter.  The Bureau of Survey and Mapping
has a NGS co-located scientist/surveyor who addresses many similar problems
for the state of Florida.  His name escapes me now, but if you e-mail Terry
Wilkinson, Bureau Chief, he can put you in touch with him.  From my own
experience, go to the ngs page: www.ngs.noaa.gov/faq.shtml,  for a
discussions of datums.  Also, the Army Corps of engineers, Topographic
Enginerring Center page:  http://crunch.tec.army.mil/solftware is also
another good place.   And lastly, the Bureau's web site, LABINS tab, is also
helpful.   I know this did not answer the question directly, but will guide
you toward a resolution, I believe.  Peter grasel, solid waste section

 

From: gis-l-bounces at lists.dep.state.fl.us
[mailto:gis-l-bounces at lists.dep.state.fl.us] On Behalf Of Arbogast, Rene
Sent: Wednesday, September 16, 2009 9:36 AM
To: Adams, David; Biernacki, Thomas; gis-l at lists.dep.state.fl.us
Subject: RE: gis-l: Measuring Height w/ ArcPad

 

Well, I'm sorry I couldn't help with a solution.  Still you might be able to
get what you need, depending on your accuracy requirements and level of
patience.  I was thinking that if it is indeed an error in vertical accuracy
and your other calculations are correct, you might try averaging it out over
a large number of epochs?

 

Maybe someone in the list serve with some experience with this could let us
know what they have learned.  I'd be interested...

 

René

 

René Arbogast 
Data Administration Consultant - SES

Water Information Technology Services  (WITS) 
Application Development Group (GIS) 
Phone: (850) 245-8522 
Room 165 BMC / MS3511

 

From: Adams, David 
Sent: Wednesday, September 16, 2009 9:28 AM
To: Biernacki, Thomas; Arbogast, Rene; 'gis-l at lists.dep.state.fl.us'
Subject: RE: gis-l: Measuring Height w/ ArcPad

 

Rene, Tom and Bryan - I thought that might be the case bit hoped for a work
around.  On a good note the Juno does seem to perform well in the x and y
axis.  Thanx for the response.

 

David "Dave" R. Adams
Environmental Specialist III - Soil Scientist
Mandatory Non-Phosphate Section
Bureau of Mining & Minerals Regulation
Division of Water Resource Management

  Collins Building Room 116                Voice:  (850) 488-8217
  2051 East Dirac Drive, MS 715         FAX:  (850) 488-1254  
Tallahassee, Florida 32310-3760  

Cover Florida, developed by Governor Charlie Crist and the Florida
Legislature, gives Floridians access to more affordable health insurance
options. To learn more or to sign up for email updates, visit
www.CoverFloridaHealthCare.com <http://www.coverfloridahealthcare.com/> . 

  _____  

From: Biernacki, Thomas 
Sent: Tuesday, September 15, 2009 4:52 PM
To: Arbogast, Rene; Adams, David; gis-l at lists.dep.state.fl.us
Subject: RE: gis-l: Measuring Height w/ ArcPad

 

I concur.  Only survey grade equipment will get elevation data that is
accurate enough to be useful.   

 

Tom

 

Tom Biernacki

Environmental Manager

Florida Department of Environmental Protection

2600 Blair Stone Road

Room 176A, Mail Station 3525

Tallahassee, Florida 32399-2400

 

Office: 850-245-8515

Sun Com: 205-8515

Fax: 850-245-7601

Cell:850-508-5747

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From: gis-l-bounces at lists.dep.state.fl.us
[mailto:gis-l-bounces at lists.dep.state.fl.us] On Behalf Of Arbogast, Rene
Sent: Tuesday, September 15, 2009 4:07 PM
To: Adams, David; gis-l at lists.dep.state.fl.us
Subject: RE: gis-l: Measuring Height w/ ArcPad

 

Hey Dave.  The elevation readings on anything less than survey-grade are
going to be (probably) 10 times as inaccurate as the horizontal measurement,
I believe.

 

René Arbogast 
Data Administration Consultant - SES

Water Information Technology Services  (WITS) 
Application Development Group (GIS) 
Phone: (850) 245-8522 
Room 165 BMC / MS3511

 

From: gis-l-bounces at lists.dep.state.fl.us
[mailto:gis-l-bounces at lists.dep.state.fl.us] On Behalf Of Adams, David
Sent: Tuesday, September 15, 2009 4:04 PM
To: gis-l at lists.dep.state.fl.us
Subject: gis-l: Measuring Height w/ ArcPad

 

All - I am trying to set up a Juno SB to measure Z as height above MSL.  I've
calculated geiod separation from GEOID03 GEOID HEIGHT COMPUTATION
<http://www.ngs.noaa.gov/cgi-bin/GEOID_STUFF/geoid03_prompt1.prl>  and
changed it to read in feet and still get a Z value that is 25 feet higher
than the USGS Topo map elevation.  Any suggestions on what I'm doing wrong?

 

David "Dave" R. Adams
Environmental Specialist III - Soil Scientist
Mandatory Non-Phosphate Section
Bureau of Mining & Minerals Regulation
Division of Water Resource Management

  Collins Building Room 116                Voice:  (850) 488-8217
  2051 East Dirac Drive, MS 715         FAX:  (850) 488-1254  
Tallahassee, Florida 32310-3760  

Cover Florida, developed by Governor Charlie Crist and the Florida
Legislature, gives Floridians access to more affordable health insurance
options. To learn more or to sign up for email updates, visit
www.CoverFloridaHealthCare.com <http://www.coverfloridahealthcare.com/> . 

 

 

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