That wont work. That only changes the projection, not the actual coordinates. The lat/long of a property in NAD 27 is different than the lat/long of the same property in NAD 83. So, if you merely change the projection, the lat/long doesn't change, which is what needs to happen. When switching from NAD 27 to NAD 83, the lat/long needs to be re-calculated.
The same effect is achieved if you open two files, one was created with a NAD 83 projection and the other with a NAD 27 projection. If they are overlayed, one of them will be changed temporarily to match the projection of the other. However, the lat/longs don't change and the points will still be offset. The actual lat/longs need to change, not just the way they are displayed. That is what the translator program does.
-Evan
-----Original Message-----
From: John Haynes [SMTP:[EMAIL PROTECTED]]
Sent: Tuesday, November 07, 2000 3:04 PM
To: Macdougall, Evan 1065; [EMAIL PROTECTED]
Subject: Re: MI-L I need to translate NAD 83 coordinates into NAD 27 and/or visa-versa
MI-L I need to translate NAD 83 coordinates into NAD 27 and/or visa-versaSave a copy of the table and check NAD 27 in the Projection box as you save it.
John Haynes
Director
Geodata Consultants, Inc.
1-800-838-6661
www.geodataconsult.com
----- Original Message -----
From: Macdougall, Evan 1065
To: '[EMAIL PROTECTED]'
Sent: Tuesday, November 07, 2000 5:32 PM
Subject: MI-L I need to translate NAD 83 coordinates into NAD 27 and/or visa-versa
Hey all,
I have Mapinfo flood zone and street data in NAD 27 coordinates, but I have Zip+4 centroid files in NAD 83 coordinates. I need to be able to convert one into the other, preferably taking the Zip+4 data and converting it to NAD 27 because that involves the least amount of work. Where can I get a program to convert the lat/long coordinates? Can I get one for free? How much would a program cost to buy? etc. etc. Thank you all for you help.
-Evan
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