| image-methods {Matrix} | R Documentation |
Methods for function image in package
Matrix. An image of a matrix
## S4 method for signature 'dgTMatrix':
image(x,
xlim = .5 + c(0, di[2]),
ylim = .5 + c(di[1], 0), aspect = "iso",
sub = sprintf("Dimensions: %d x %d", di[1], di[2]),
xlab = "Column", ylab = "Row",
col.regions = grey(seq(from = 0.7, to = 0, length = 100)),
colorkey = FALSE, ...)
x |
a Matrix object, i.e., fulfilling
is(x, "Matrix"). |
xlim, ylim |
x- and y-axis limits; may be used to “zoom into” matrix. |
aspect |
aspect ratio specified as number (y/x) or string;
see levelplot. |
sub, xlab, ylab |
axis annotation with sensible defaults;
see plot.default. |
col.regions |
vector of gradually varying colors; see
levelplot. |
colorkey |
logical indicating if a color key aka ‘legend’
should be produced. Defaults to FALSE. |
... |
further arguments passed to methods and
levelplot. |
All methods currently end up calling the method for the
dgTMatrix class.
Use showMethods(image) to list them all.
showMethods(image) ## If you want to see all the methods' implementations: showMethods(image, incl=TRUE, inherit=FALSE)