How to increase pixel size of rasterize=True in hvplot

When I create a rasterized plot in hvplot using:
df.hvplot.points(x=‘longitude’, y=‘latitude’, geo=True, tiles=‘OSM’, rasterize=True)

The size of the aggregated image pixels are sometimes so small they can barely be seen. How do I increase decrease the resolution of these so that I can see the pixels easier?

I believe x_sampling and y_sampling or dynspread=True