search for: example__plotgeographicdensity

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2011 Oct 21
0
geom_tile rendering problems
Hi, I'm trying to overlay a geographical map with a heat map by following the directions on http://pages.stern.nyu.edu/~achinco/programming_examples/Example__PlotGeographicDensity.html. However, the smaller my zoom level (the farther I zoom out), the more white horizontal lines I have interspersed in the tiled data after calling geom_tile. Is there any way around this? I tried setting the image to panel.background, but found it impossible to scale back to the original hea...