Java Simple WGS84 Lat Lon to Pixel X, Y

Question

I've read a multitude of information regarding map projection today. The amount of information available is overwhelming.

I am attempting to simply convert lat, long values into a screen X, Y coordinate not using any map. I do not need the values projected onto any map, just on the window.

The window itself is representing approx. a 1500x1500 meter location. Lat, Long accuracy needed is to a 1/10th of a second.

What may be some simpler ways in converting lat/long representation to the screen?

I've read several articles and post regarding translation onto images, but nothing related to the natural java coordinate system.

Thanks for any insight.

Answer 1

When projecting to a screen, you still are projecting to a "map", so it really depends on what your map projection is. However, if you're only working in such a small area of 1500x1500 meters, you can use a simple Cartesian projection, where each pixel is an equal amount of space (i.e. if your screen is 1500 pixels, then each pixel would represent 1 meter). However, you still need to account for where you are on the earth since the length of a degree (in both latitude and longitude) can vary greatly depending on where you are. If you are working with a fixed area, you should be able to lookup the length of 1 degree at that point.