Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
Which projection for this map?
20 views
Skip to first unread message
Martin Pauly
Feb 3, 2014, 1:30:30 PM2/3/14
to
Hello,
First post here. During my search for a high-resolution background image for a map of the United States, I ran into this image:
http://www.primap.com/MapCollection/en/Free/Map%20USA%20Satellite%20+%20Borders%204000x2598.PNG
To accurately overlay other information on this background, I need to know what projection this image is based on. Then I can convert random latitude/longitude coordinates into x/y coordinates for the map, and vice versa.
I have contacted the seller of the image and expressed my interest in licensing the map for my project, once I understand the projection details. Unfortunately I don't think he understands what I am looking for, and I don't know how to explain it any differently.
Therefore, maybe somebody here can help me with either of the following:
(1) Reverse-engineer the projection used for this image, or
(2) Point me at a source of a similar image for which the projection is known.
Thank you in advance for your help.
Kind regards,
Martin
First post here. During my search for a high-resolution background image for a map of the United States, I ran into this image:
http://www.primap.com/MapCollection/en/Free/Map%20USA%20Satellite%20+%20Borders%204000x2598.PNG
To accurately overlay other information on this background, I need to know what projection this image is based on. Then I can convert random latitude/longitude coordinates into x/y coordinates for the map, and vice versa.
I have contacted the seller of the image and expressed my interest in licensing the map for my project, once I understand the projection details. Unfortunately I don't think he understands what I am looking for, and I don't know how to explain it any differently.
Therefore, maybe somebody here can help me with either of the following:
(1) Reverse-engineer the projection used for this image, or
(2) Point me at a source of a similar image for which the projection is known.
Thank you in advance for your help.
Kind regards,
Martin
0 new messages