[Proj] convert from Equidistant Cylindrical to Eckert I

[strebe at aol.com]

Hello Leslie.

You cannot magically preserve information by reprojecting it. That can only lose information. You would get much better results just using standard image editing applications to scale the image down.

Regards,
— daan Strebe

> On May 24, 2016, at 16:34, Wang Leslie <wqyuwss at hotmail.com> wrote:
> 
> Hi Jose,
> 
> 
> Thanks for the quick reply.
> 
> 
> What do you mean "be geo-referenced"? What I'm thinking is to use these tools to convert a 360 panorama picture, such as https://upload.wikimedia.org/wikipedia/commons/3/35/Space_Needle_360_Panorama.jpg, which is an equidistant cylindrical projection, to other type of projection, which keeps same quality but with smaller size. Thus I can save some storage spaces. In this case, these 360 picture doesn't have any geo-referenced data. Can I still use these tools? 
> 
> 
> 
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