From ImageToWorld to WGS84

Topics: General Topics, Algorithms, SharpMap Project
Jun 29, 2007 at 4:47 PM
Hi there! I've got a web application that shows a map. I'd like to allow the user to click on the map and catch the point's coordinates where he clicked. I Know that SharpMap have ImageToWorld command, but I'd like to know the coordinates in WGS84 notation. How can I do this conversion? In others word, how can I convert the World Coordinates System (type returned from ImageToWorld) in WGS84?
Jun 30, 2007 at 5:19 AM
Edited Jun 30, 2007 at 5:20 AM
Your question doesn't make sense. You might want to read this
Jun 30, 2007 at 8:13 AM
Sorry, but when I use ImageToWorld command, I've a point that have coordinates like: 2689430,658698 and 4543192,946157. Which kind of notation is this? I'd like to know this, because I've to convert this two number in WGS84 notation.
Thanks in advance
Aug 1, 2007 at 12:20 PM
Those look like UTM coordinates. If so, they'd be in meters east from the western-most meridian and meters north of the shifted equator, both in a particular zone.

If these coordinates don't make sense to your users, you'd have to transform them into coordinates which do, like Lat / Lon, for example.