The new QuickMap push notification feature allows travelers to opt-in to receive location-based alerts on their mobile devices, Caltrans said. “Drivers can use this information to adjust their plans when needed, compare route options, save time, and travel safely to their destinations,” he added.Ĭaltrans’ QuickMap is a free mobile application and website for travel planning, providing immediate traffic information including traffic speed, lane and road closures due to construction and maintenance activities, emergency incidents, highway sign messages, rest area locations, camera snapshots, and active chain control requirements. “With this new QuickMap upgrade, Californians now can receive instant traffic notifications based on their location,” explained Tony Tavares, director of Caltrans, in a statement. Nzmap + coord_map( "azequalarea", orientation = c(- 36.92, 174.The California Department of Transportation recently launched a new push notification feature on its QuickMap mobile application that allows motorists to receive real-time notifications automatically about nearby road closures, emergencies, and other traffic updates. # Other projections nzmap + coord_map( "cylindrical") # With the aspect ratio approximation nzmap + coord_quickmap() # Plot it in cartesian coordinates nzmap # With correct mercator projection nzmap + coord_map() Geom_polygon( fill = "white", colour = "black") # Prepare a map of NZ nzmap <- ggplot( nz, aes( x = long, y = lat, group = group)) + Plots like geom_tile()) at the expense of correctness. This is whatĬoord_quickmap does, and is much faster (particularly for complex Poles, setting the aspect ratio of the plot to the appropriate lat/lon ratioĪpproximates the usual mercator projection. For regions that span only a few degrees and are not too close to the Towards infinity because the length of one degree of longitude tends towardsĠ. One degree of longitude is approximately 1. Near the equator, the ratio between the lengths of one degree of latitude and (in km) of one degree of longitude varies between the equator and the pole. In general, map projections must account for the fact that the actual length Limits are taken exactly from the data or xlim/ ylim. The limits to ensure that data and axes don't overlap. If TRUE, the default, adds a small expansion factor to For details, please see coord_cartesian(). Setting of "on" (the default) means yes, and a setting of "off" Should drawing be clipped to the extent of the plot panel? A Manually specific x/y limits (in degrees of Mapproj::mapproject() for more information. Projections, so you will have to supply your own. Projection orientation, which defaults toĬ(90, 0, mean(range(x))). is ignored if the parameters argument is present. The projection, and parameters for unnamed parameters. Orientation = NULL, xlim = NULL, ylim = NULL, clip = "on")Ĭoord_quickmap( xlim = NULL, ylim = NULL, expand = TRUE, clip = "on") Arguments projection Quick approximation that does preserve straight lines. Lines, so this requires considerable computation. Map projections do not, in general, preserve straight Spherical, onto a flat 2D plane using any projection defined by the Coord_map projects a portion of the earth, which is approximately
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