I'm using the SimpleCylindrical_Titan coordinate system, which has a range of 180W to 180E.
Data for Titan (Saturn's moon) typically ranges from 0 to 360W, centering on 180.
Is there any way to alter the range of values in order to display properly from 0 to 360, rather than 180 to 180?
Thank you,
Christine
Interesting question. I am assuming you wish to create this coordinate system for use in ArcGIS, so I am adding Melita Kennedy as a keyword here, as she will see it since it references her. She is Senior Product Engineer for Map Projections and Transformations at ESRI, and your best bet for a solution.
Best Regards,
Jim
Hi Jim and Melita,
Yes, I was trying to create a custom coordinate system. I'm able to change the central meridian (180), but not the range (0 to 360, positive west).
The coordinate system is based on SimpleCylindrical_Titan, with the following ranges and radii:
CenterLongitude = 180.0
EquatorialRadius = 2575000.0 <meters>
PolarRadius = 2575000.0 <meters>
LongitudeDirection = PositiveWest
LongitudeDomain = 360
MinimumLatitude = -90.0
MaximumLatitude = 90.0
MinimumLongitude = 0.0
MaximumLongitude = 360.0
Christine
out of curiosity, what happens if you set the CenterLongitude = 0.0 ?
I don't know that we can do anything directly. I think it will be easier to re-georeference the data. Note the "postiveWest" for the LongitudeDirection value. You could just force the raster into 0-360 latitude/longitude that way. Or possibly georeference into a simple cylindrical system, center at 180.
Melita
Ok, thank you Melita!