Class

GDALTransientDataset is identical to GDALDataset-class except that transient datasets are not associated with any user-visible file. Transient datasets delete their associated file data when closed. See saveDataset and saveDatasetAs.

Objects from the Class

Objects can be created by calls of the form new("GDALTransientDataset", driver, rows, cols, bands, type, options, fname, handle).

driver: A "GDALDriver" object that determines the storage format
rows: Number of rows in the newly created dataset
cols: Number of columns in the newly created dataset
bands: Number of bands to create
type: A GDAL type name as listed in .GDALDataTypes
options: Driver specific options
fname: default NULL, used internally to pass through a file name with a required extension (RST driver has this problem)
handle: Used internally; not for public consumption

Slots

handle:: Object of class "externalptr", from class "GDALDataset", used internally; not for public consumption

Extends

Class "GDALDataset", directly. Class "GDALReadOnlyDataset", by class "GDALDataset". Class "GDALMajorObject", by class "GDALDataset".

Methods

closeDataset: signature(dataset = "GDALTransientDataset"): ...
initialize: signature(.Object = "GDALTransientDataset"): ...

Author

Timothy H. Keitt, modified by Roger Bivand

Examples

list.files(tempdir())
#> [1] "downlit"
x <- new('GDALTransientDataset', driver=new('GDALDriver', "GTiff"), rows=100,
 cols=100, bands=3, type='Byte')
dim(x)
#> [1] 100 100   3
list.files(tempdir())
#> [1] "downlit"           "file108cd527bd784"
GDAL.close(x)
list.files(tempdir())
#> [1] "downlit"