| Re: An question about ENVI header file [message #83215] |
Sun, 17 February 2013 21:09 |
Olivia
Messages: 16
Registered: February 2006
|
Junior Member |
|
|
Thanks David,
I knew the data provider using ENVI to do the projection, so I checked the ENVI Projection Number on the website. http://geol.hu/data/online_help/Map_Projections.html
The 36 represent Lambert Azimuthal Equal Area (sphere).
Thanks for your help.
Olivia
On Sunday, February 17, 2013 10:56:32 PM UTC-6, David Fanning wrote:
> Olivia writes:
>
>
>
>> I have an ENVI header file. Could somebody tell me what does the "36" represent in the projection info parameter?
>
>>
>
>> projection info = {36, 6378137.0, 50.000000, -100.000000, 0.0, 0.0, WGS-84, Lambert Azimuthal North America, units=Meters}
>
>
>
> It is the number associated with a particular map projection. Look in
>
> the file map_proj.txt, found somewhere in the ENVI distribution, for a
>
> translation.
>
>
>
> Cheers,
>
>
>
> David
>
>
>
>
>
>
>
> --
>
> David Fanning, Ph.D.
>
> Fanning Software Consulting, Inc.
>
> Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
>
> Sepore ma de ni thue. ("Perhaps thou speakest truth.")
|
|
|
|
| Re: An question about ENVI header file [message #83216 is a reply to message #83215] |
Sun, 17 February 2013 20:56  |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
Olivia writes:
> I have an ENVI header file. Could somebody tell me what does the "36" represent in the projection info parameter?
>
> projection info = {36, 6378137.0, 50.000000, -100.000000, 0.0, 0.0, WGS-84, Lambert Azimuthal North America, units=Meters}
It is the number associated with a particular map projection. Look in
the file map_proj.txt, found somewhere in the ENVI distribution, for a
translation.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
