R: Export a time series of images to KML

kml_layer.RasterBrick {plotKML}

R Documentation

Export a time series of images to KML

Description

Writes a series of images to PNGs and uses them to create ground overlays. Works only with "RasterBrick" class objects with time dimension specified via the "@zvalue".

Usage

kml_layer.RasterBrick(obj, plot.legend = TRUE, dtime = "", tz = "GMT", 
          z.lim = c(min(minValue(obj), na.rm=TRUE), max(maxValue(obj), na.rm=TRUE)), 
          colour_scale = get("colour_scale_numeric", envir = plotKML.opts),
          home_url = get("home_url", envir = plotKML.opts),
          metadata = NULL, html.table = NULL,
          altitudeMode = "clampToGround", balloon = FALSE,
          png.width, png.height, min.png.width = 800, png.type, ...)

Arguments

`obj`	object of class `"RasterBrick"` (e.g. a time series of images)
`plot.legend`	logical; specify whether a map legend should be generated automatically
`dtime`	temporal support (point or block) expressed in seconds
`tz`	referent time zone
`z.lim`	upper and lower limits (unique for all maps in the time series); the function by default uses the absolute minimum and maximum in values
`colour_scale`	color palette; by default uses the color scale for numeric variables
`home_url`	(optional) URL directory / location of the images
`metadata`	(optional) the metadata object
`html.table`	(optional) the description block (html)
`altitudeMode`	character; the default altitudeMode
`balloon`	logical; specifies whether to display balloon for each element
`png.width`	(optional) width of the PNG files
`png.height`	(optional) height of the PNG files
`min.png.width`	(optional) minimum width of the PNG file
`png.type`	character; PNG type
`...`	additional arguments (see `aesthetics`)

Details

This method is recommended for visualization of numeric bands representing the same variable i.e. time series of images. To export a stack of images of different type see kml_layer.Raster. If the "@zvalue" slot is empty, dates will be added by subtracting days from the current day with 1–day increments.

Author(s)