binary_image_write: Writes image data to a flat binary file using col/row/band...

In spatial.tools: R Functions for Working with Spatial Data

Description

Writes image data to a flat binary file using col/row/band positioning.

Usage

binary_image_write(filename, mode = real64(), image_dims,
  interleave = "BSQ", data, data_position)

Arguments

filename	Character. The path and filename of a "blank" binary file to store the image data.
mode	The mode of data on disk. Defaults to real64() (double precision floating point).
image_dims	Vector. Vector of length(image_dims)==3 representing the number of columns, rows and bands in the output image.
interleave	Character. The require output interleave. By default is "BSQ". OTHER INTERLEAVES CURRENTLY UNSUPPORTED.
data	Vector, matrix, array, or other data source which is coercible to a vector. This is the data to be written to the image.
data_position	List. A length==3 list, containing the column, row, and band positions ranges to write the output data.

Author(s)

Jonathan A. Greenberg

See Also

mmap,create_blank_raster

Examples

## Not run:  
tahoe_highrez <- brick(system.file("external/tahoe_highrez.tif", package="spatial.tools"))
# Create a blank file using create_blank_raster
test_blank_file <- create_blank_raster(reference_raster=tahoe_highrez)
blank_raster <- brick(test_blank_file)
# It should be all 0s:
setMinMax(blank_raster)
# Write some ones to to the 100th line, columns 25 to 50, bands 1 and 3:
data_position <- list(25:50,100,c(1,3))
data1s <- array(1,dim=c(
	length(data_position[[1]]),
	length(data_position[[2]]),
	length(data_position[[3]])))
plot(raster(test_blank_file,layer=1))
binary_image_write(filename=test_blank_file,
	mode=real64(),image_dims=dim(tahoe_highrez),interleave="BSQ",
	data=data1s,data_position=data_position)
setMinMax(blank_raster)
plot(raster(blank_raster,layer=1))

## End(Not run)

spatial.tools documentation built on May 2, 2019, 6:52 p.m.