I have a Maperitive png tile file 1485.png tile converted to 1485.h file to display on my Elecrow 3.5in. ILI9488 TFT display. I used SPIFF to open up the map, albiet it's 256x256 size is a problem I am working learning how to resize the tiles to 480x320.
How can I create a TFT marker of the live, real-time GPS coordinates position displayed on top of the map that is accurate with regard to the map's tiles' embedded position?
First, transform the GPS coordinates onto the tile coordinate system, then draw whatever marker you like at that position.
Thank you for your prompt response, much appreciated!
This is just the begging for me, could you direct me to this "tile coordinate system", is that a part of the Maperitive app?
Maperitive appears to have good documentation. That would be the place to start your journey.
You must understand the various coordinate systems and how to transform between them. Keep in mind that the TFT display has its own coordinate system, the tiles have theirs, and GPS has yet another.
