TL;DR: can anyone help w/ geospatial things in R using geom_raster() in ggplot?
Basically it seems that my issue is stemming from the fact that I don't have perfectly gridded values (aka I get this message: "Warning: Raster pixels are placed at uneven vertical/horizontal intervals and will be shifted. Consider using geom_tile() instead."). So, if I switch to geom_tile, then I can control the size of the tiles, but then they look chunky and awful since there's no interpolation feature in geom_tile. If I use geom_raster, I think it gets confused what size it should plot the pixels since it's not perfectly gridded, so when I facet my ggplot, the output sometimes will have teeny tiny dots (or even no dots at all) on some facets, and pretty maps on the other facets. When I round the lat/lon coordinates to 0 decimal places, this fixes the teeny tiny / no dots problem, but then ends up with things just like geom_tile (chunky with no blending between).Any ideas on how to fix this? I think if there's a way to manually interpolate to fill in NA values so that I do have nice symmetrically-gridded data, then geom_raster should work fine. Like what needs to happen is for each situation where we're missing a value at a certain lat/lon, we need to take the mean value between the two closest neighboring points to fill in that missing lat/lon point on the grid. But I'm not sure how to do this (aka how to convert from my dataframe into all the different spatial classes and back again). Then again, this manual approach might be overcomplicating things and I'd love a simpler solution. (fingers crossed)
I'm building this in a shiny app with crazy long code, and a very large dataset, but happy to share additional info as needed!
