ExportKMLRaster: ExportKMLRaster
In Blakemassey/gisr: Functions for Spatial Data Manipulation and Plotting

Description Usage Arguments Details Value

Create a Google Earth KML file from a RasterLayer or a set of KMLs from a RasterStack, or RasterBrick. Reliant on ExportKMLPolygon().

ExportKMLRaster(object, object_layer, outfile, kml_name,categorical,
  metadata, metadata_layer, color_pal, color_alpha, color_range, color_min,
  color_max, color_levels, color_increment, legend_levels, legend_values,
  log, signif_digits, outline, alt_mode, extrude, labelscale, create_kmz)

`object`	a 'RasterLayer' or 'SpatialPolygonsDataFrame' object
`object_layer`	layer in object that is used for display
`outfile`	location of output KML file. Extensions (.kml or .kmz) will automatically determine file type.
`kml_name`	name of folder in KML file
`categorical`	logical, whether the data is categorical, default is false.
`metadata`	location of metadata .csv file for categorical data. Metadata file must contain "id" and "icon_color" columns.
`metadata_layer`	not required, column name in metadata used for legend labels instead of "id"
`color_pal`	color palette, can be a color ramp (i.e. c("white", "red") or a specific palette ("SAGA_pal[[1]]"). Atuomatically set as Saga_pal[i] for RasterStack and RasterBrick.
`color_alpha`	display and legend alpha value, default "cc"
`color_range`	range of object values to create color palette
`color_min`	min object values to create color palette
`color_max`	max object value to create color palette
`color_levels`	number of breaks in color palette, ignored if color_interval not equal to NA
`color_increment`	intervals for color palette breaks
`legend_levels`	number of breakpoints in legend, ignored if legend_interval not equal to NA
`legend_values`	vector of values in legend
`log`	logical of whether to log transform. Default is FALSE.
`signif_digits`	number of signifcant digits for polygon labels
`outline`	1 or 0, whether to draw an outline around each polygon
`alt_mode`	based on KML code: "absolute","clampedToGround", "relativeToGround" (see KML documentation for description). Default is "clampedToGround"
`extrude`	either 0 (default) or 1: 0 for no line, 1 extends a line from the point to the ground.
`labelscale`	adjusts the size of the Google Earth location point labels. Default is 0, which hides the labels. To show labels, change to a value between 0.7-1.
`create_kmz`	will always create a KMZ, default is FALSE.