[R] Static to interactive map (leaflet spplot)

Debasish Pai Mazumder pai1981 at gmail.com
Wed Feb 3 00:28:21 CET 2016


Hi ALL,

I have a script to plot hexagonal polygon on a map. Its a static map. I
used spplot. I would like to convert this plot to interactive plot using "
*leaflet*". How do I make it interactive plot?

Here is spplot lines:

cl = map("world", xlim = c(-120, 20), ylim = c(-10, 70), plot = TRUE)
cl = map("world",plot = TRUE)
clp = map2SpatialLines(cl, proj4string = CRS(ll))
clp = spTransform(clp, CRS(lcc))
l2 = list("sp.lines", clp, col = "black", lty = 1, lwd = 3)

cr = colorRampPalette(brewer.pal(9,"YlOrRd"))(100)

require(grid)
spplot(hspdf, "CDP", col = "white", col.regions = cr,
            sp.layout = list(l2),
            at = seq(0,100,10),
            sub = list("CDP", cex = 1.5, font = 2))

where
> hspdf
class       : SpatialPolygonsDataFrame
features    : 95
extent      : -4141330, 3748528, 1530846, 6914278  (xmin, xmax, ymin, ymax)
coord. ref. : +proj=lcc +lat_1=60 +lat_2=30 +lon_0=-60 +ellps=WGS84
variables   : 4
names       : hexid, count, hct,               CDP
min values  :    37,     1,   1, 0.136612021857923
max values  :   448,     7,   3,  39.4391854927413

CDP values of each hexagonal polygon.

-Deb

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