r ggplotly implementation of ggmap

[AmyMikhail]

I map coordinates using ggmap to put a google map in the background and plot basic points on top of it. It would be nice to be able to identify the points on the map with a label of my choosing, using ggplotly. However, it appears this is not yet implemented.

I have R 3.3.0 and am using ggmap_2.6.1 and plotly plotly_3.4.13 in RStudio 0.99.489.

Running the following on coordinates and descriptive variables from the data.table called linelist:
`# Create a boundary box to zoom manually
bbox <- ggmap::make_bbox(lon, lat, linelist, f = 0.85)

Get a map centred on the boundary box

map_loc <- get_map(location = bbox, source = 'google', maptype = "roadmap", crop = FALSE, color = "bw")

Plot the map in the background

map <- ggmap(map_loc, extent = 'device', maprange = FALSE)

Add the points for each postcode, here I've used case definition and given them different colours

map <- map + geom_point(data = linelist, aes(x = lon, y = lat, fill = casedef), colour = "black", pch = 21, size = 3) +
scale_fill_manual(values = c("blue", "red")) +
labs(fill = "SNP address") +
scale_size(guide = "none")
map2 <- ggplotly()`

Gives this message:
Warning message: In geom2trace.default(dots[[1L]][[1L]], dots[[2L]][[1L]], dots[[3L]][[1L]]) : geom_GeomRasterAnn() has yet to be implemented in plotly. If you'd like to see this geom implemented, Please open an issue with your example code at https://github.com/ropensci/plotly/issues

When I look at map2 I can see the points and there is a label if I hover over them, but they are joined by lines and there is no map in the background.

It would be great if this feature could be added.

[cpsievert]

Duplicate of #348