landsatTrim {oce} | R Documentation |
Trim a landsat image to a latitude-longitude box. This is only an approximate operation, because landsat images are provided in x-y coordinates, not longitude-latitude coordinates.
landsatTrim(x, ll, ur, box, debug = getOption("oceDebug"))
x |
A |
ll |
A list containing |
ur |
A list containing |
box |
A list containing |
debug |
A flag that turns on debugging. Set to 1 to get a moderate amount of debugging information, or a higher value for more debugging. |
As of June 25, 2015, the matrices storing the image data are trimmed to indices
determined by linear interpolation based on the location of the ll
and
ur
corners within the lon-lat corners specified in the image data. (A
previous version trimmed in UTM space, and in fact this may be done in future
also, if a problem in lonlat/utm conversion is resolved.) An error results if
there is no intersection between the trimming box and the image box.
An object of landsat-class
, with data having
been trimmed approximately as specified.
Dan Kelley and Clark Richards
The documentation for landsat-class
explains the
structure of landsat objects, and also outlines the other functions dealing
with them.
Other things related to landsat
data: [[,landsat-method
,
landsat-class
, landsatAdd
,
landsat
, plot,landsat-method
,
read.landsat
,
summary,landsat-method