rgooglemaps

How to display coordinates on the static map PNG file as they are received from the GPS in R?

由 谁都会走 提交于 2020-01-06 23:48:17
问题 So, currently I have successfully compiled the program (with RInside ) for plotting coordinates on the static maps of Google (on Qt ). Now, I have to plot the coordinates on the map as they are received from the GPS. Is it possible somehow to display the newly plotted points on the png "on the fly"? I mean I don't wish to read the png from the harddisk every time I receive a new point. From here: http://cran.r-project.org/web/packages/png/png.pdf This package provides an easy and simple way

Boundary polygon of lat lon collection

由 耗尽温柔 提交于 2020-01-04 11:02:41
问题 I have a table containing all the latitudes and longitudes of some locations in a city called queryResult and I do the following: 1 - Get the Raster map of the city[Blackpool for instance] cityMapRaster = get_map(location = 'Blackpool', zoom = 12, source = 'google', maptype = 'roadmap') dataToShow <- ggmap(cityMapRaster) + geom_point(aes(x = Longitude, y = Latitude), data = queryResult, alpha = .5, color = "darkred", size = 1) print(dataToShow) and this will return the following points on the

Add basemap to SpatialPointDataFrames using R

由 爱⌒轻易说出口 提交于 2019-12-10 21:10:14
问题 I want to add a basemap to my plot, which visualizes three SpatialPointDataFrames. I've already tried the maptools as well as RgoogleMaps package, but both don't work in the way, which I want to. My problem: The SpatialPointDataFrames are not drawn on the GoogleMaps Background map. A minimal example: The city.csv with the following example content: FID,city,POINT_X,POINT_Y 0,New York,-73.996786,40.720813 1,Newark,-74.172237, 40.732196 The R Code: # Load packages library(RgoogleMaps) library

Get Map with specified boundary coordinates

由 喜你入骨 提交于 2019-11-27 19:07:48
I want to get a map with RgoogleMaps from R, with a specific coordinates boundary. What I can call is GetMap, and specify a center, I must add a zoom level. Everything works fine, except that I am not getting an image map bounded with the coordinates I choose. Here's an example: lat <- c(44.49,44.5) lon <- c(11.33,11.36) center = c(mean(lat), mean(lon)) zoom <- 14 mmap <- GetMap(center = center, zoom=zoom, maptype= "satellite", destfile = "m.png") The problem is that only the center is passed as a parameter, and thus the whole image I see is dependant on the zoom level. So, I cannot really

Get Map with specified boundary coordinates

由 你。 提交于 2019-11-27 04:21:34
问题 I want to get a map with RgoogleMaps from R, with a specific coordinates boundary. What I can call is GetMap, and specify a center, I must add a zoom level. Everything works fine, except that I am not getting an image map bounded with the coordinates I choose. Here's an example: lat <- c(44.49,44.5) lon <- c(11.33,11.36) center = c(mean(lat), mean(lon)) zoom <- 14 mmap <- GetMap(center = center, zoom=zoom, maptype= "satellite", destfile = "m.png") The problem is that only the center is passed
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