All, I discovered what was the issue. The Albers Conical used by the PASDA website for the vector data has a different origin than the US Albers Conical. I created a new .prj file in the MAPINFO.PRJ text file with the appropriate origin. This solved the problem.
Thanks again for all the help! Josh C. Hickman Exploration Geoscientist CNX Gas LLC http://www.consolenergy.com PO Box 947 Bluefield VA 24605 Work: 276-988-1036 Fax: 276-988-1076 -----Original Message----- From: Hickman, Josh [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 07, 2004 8:09 AM To: [EMAIL PROTECTED] Subject: MI-L RE: Albers Conical Equal Area Fellow GISers, I thought a brief summary of this topic might shed some new light on the subject. Richard Ashton pointed out that the Albers Conical Equal Area projection is found under the North American Coordinate Systems category and is the Albers Equal-Area Conic (Continental US) member. Interesting note about this is that when this is selected in Universal Translater, and the projections box closed then re-opened the projection is under the Regional Equal-Area Projections with the Equal-Area Projection (United States) member selected. Logically these must be the same, but I thought I would point out this interesting quirk. Jon Gramm put out that the DOQQ v. vector stretching problem likely comes from the fact the vector data is in a conic projection while the raster is in a cylindrical projection system. The suggestion to test this is to reproject both sets of data into Pennsylvania State South NAD 27. This may very well work but it brings up a question that I've been meaning to ask for a while - what is the easiest way to re-project raster data (ie. tiff's, .dem's, etc) in MapInfo 7.0. When you try to save-as there is no selection box to set a new projection as there is when doing the same to vector data. Spencer Simpson sent his mail to the list so if anyone is interested you can review it in the comfort of your own inbox. Patrick Chance suggested that it would be good to review Appendix F in the MI manual on how to 'create your own coordinate system'. Thanks to all who have taken time on this problem. I think it is something that we can all learn from. Dealing with different data in drastically different projections and such seperates the casual user from the power user that is sure. I'm almost to the solution so I'm sending out another plea for help with this e-mail! Thanks as always! Josh C. Hickman Exploration Geoscientist CNX Gas LLC http://www.consolenergy.com PO Box 947 Bluefield VA 24605 Work: 276-988-1036 Fax: 276-988-1076 --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 11309
