[Proj] Is it possible to store a WGS84 / Pseudo Mercator image as a GeoTIFF?

Noel Zinn (cc) ndzinn at comcast.net
Sun Feb 8 05:35:11 PST 2015


Andre,

"Adopted" connotes acceptance.  Perhaps "tolerated" is closer to the truth.

Mikael,

If you're not aware of "Implications of Web Mercator and Its Use in Online 
Mapping", by Battersby, Finn, Usery and Yamamoto (Cartographica 2014), 
here's a link:

http://www.researchgate.net/publication/265895464_Implications_of_Web_Mercator_and_Its_Use_in_Online_Mapping

And even "tolerated" connotes too much acceptance for the US National 
Geospatial-Intelligence Agency.  See link following:

http://earth-info.nga.mil/GandG/wgs84/web_mercator/

Noel

Noel Zinn, Principal, Hydrometronics LLC
+1-832-539-1472 (office), +1-281-221-0051 (cell)
noel.zinn at hydrometronics.com (email)
http://www.hydrometronics.com (website)

-----Original Message----- 
From: Andre Joost
Sent: Sunday, February 08, 2015 6:46 AM
To: proj at lists.maptools.org
Subject: Re: [Proj] Is it possible to store a WGS84 / Pseudo Mercator image 
as a GeoTIFF?

Hi Mikael,

You should probably ask "since when it is supported correctly?".

I remember that EPSG:900913 was rejected by EPSG and GIS professionals
for a long time, until it was adopted as EPSG:3857.

And there were several complaints about misalignments of abot 20km to
the North, due to the non-standard transformation Google had invented.

EPSG:3395 and EPSG:3785 were some steps on the right way.

As a reference, you can look for older versions of QGIS including GDAL
and PROJ at http://qgis.org/downloads/ back to 2010.

http://www.gisinternals.com/archive.php dates back to GDAL 1.7.3

FWtools http://fwtools.maptools.org/ might still be older.

Greetings,
André Joost

Am 08.02.2015 um 11:26 schrieb Mikael Rittri:
> And if it is possible, since when or what version of
> GeoTIFF? And do most GeoTIFF readers support it?
>
> (I apologize if this is the wrong mailing list for the questions.)
>
> I am writing a report on Pseudo Mercator, and I realized
> that I don't know how well it is supported in GeoTIFF.
>
> Best regards,
>
> Mikael Rittri
> Carmenta
> Sweden
> http://www.carmenta.com
> _______________________________________________
> Proj mailing list
> Proj at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/proj
>


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