Requesting :.prj files for NAD83(PA11) NAD83(MA11) .gtf files for ITRF 2000 to NAD 1983 (2011)WGS 1984 (aka ITRF00) to NAD 1983 (2011)ITRF 2008 to NAD 1983 (2011)Thanks
I'm replying to an older post, but with a newer question regarding transformations between NAD83(2011) and ITRF08.epoch2010.00...
Our research center has been involved with studying effects of the 2014 pulse-flow from Morelas Dam on the Colorado River in Mexico. This has been a fairly large inter-agency, mutli-national effort which has created some real projection and transformation issues regarding the data collected by different entities (and countries). We are attempting to bring all the data related to this experimental flow into a more consistent framework.
First, is there a GTF file available that will transform data between NAD83(2011).epoch2010.00 and ITRF08.epoch2010.00?
This link had something close, but does not exactly address what we are looking for...
LATEST .PRJ and .GTF files for ArcGIS : NAD83(2011, MA11, PA11) Projections and Transformations (2013)
Here, we were able to discover transformations to ITRF08.epoch2005.00 ( Thanks for that, by the way!!), but not to ITRF08.epoch.2010.00.
National Geodetic Survey OPUS results deliver coordinates in the ITRF08.epoch.2010.00 datum but not the 2005.00 epoch, and we would like to stay consistent with the OPUS results.
Any help with this would be greatly appreciated!!
Remarks: Jointly derived by US NGS and Geodetic Survey of Canada as transformation to target CRS of ITRF96(1997.0) - see also tfm code 1946. In USA only replaces NAD83 to WGS 84 (2) (code 1900).
Hi Ted, Here you go. I changed the file extension to .txt as the forums doesn't allow a .prj extension.Melita
When I try and transform data into the latest datum (PA11 for Hawaii, MA11 for Guam) I do not see the transformation parameters available for transforming into PA11 or MA11. I only see the parameters for transforming to 2011, which use different transformation parameters according to this document: http://resources.arcgis.com/en/help/main/10.1/003r/pdf/geographic_transformations.pdf. Do I need to create the transformation parameters for these datums?
...Can you please verify that the following methods are appropriate for transforming Hawaii data from older versions of NAD83 to NAD 1983 (PA11)?
Next version: ArcGIS 10.1. The name is GCS_NAD_1983_2011 or "NAD 1983 (2011)".There are 3 transformations from HARN, NSRS2007, and CORS96 but they are all 'bookkeeping' transformations. The parameters are zeroes. There are 3 transformations from various ITRF/WGS84 versions that do have non-zero parameters. ITRF 2000 to NAD 1983 (2011)WGS 1984 (aka ITRF00) to NAD 1983 (2011)ITRF 2008 to NAD 1983 (2011)Melita
Retrieving data ...