Description Usage Arguments Examples
View source: R/geom_multi_raster.R
Unlike annotation_raster
which
draws only 1 raster, this layer
draws one or more rasters at the same time.
The data must be a tbl object created by
package tibble and the reason is that,
as we must give each rectangle a
vector of colors, the column that
contains these vectors of colors must
be a list rather than a vector. A list can
be a column for tbl object, not for
a normal data frame. See examples.
Accepted properties are:
(1) xmin
.
(2) xmax
.
(3) ymin
.
(4) ymax
.
(5) raster
. a list with 1 or more
rasters. If you have only 1 raster, you also
have to put it into a list.
Each raster should be
a matrix, a raster object, a character vector
or a magick object read into R by
magick::image_read
.
You can also use a data frame created by
package tibble to combine
xmin, xmax, ymin, ymax, raster
.
(6) interpolate
. It is the same
as that in annotation_raster
except
that the default value is TRUE. It can be
used either inside or outside
the aes(...)
function. Its length must be
either 1 or the same as the number of
rasters.
(7) flip
. The default is FALSE.
You only need to use TRUE when you
use coord_flip
. Used outside the
aes(...)
function.
1 2 3 4 5 6 7 8 9 10 11 |
mapping |
aes mapping. |
data |
data. It should be a tbl object. |
stat |
stat. |
position |
position. |
na.rm |
logical, whether to remove NA values. |
show.legend |
This will not be used because the layer does not create any legend. |
inherit.aes |
logical, whether to inherit aes from ggplot(). |
flip |
see description. |
... |
additional parameters. |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | # Example 1: use vectors and a list.
mycolor=list(
c1=matrix(c("red", "blue", "green", "yellow"), nrow=2),
c2=matrix(c("green", "yellow")),
c3=matrix(c("purple", "red")))
xmin=1: 3
xmax=(1: 3)+0.8
ymin=c(0, 1, 2)
ymax=c(1, 3, 5)
ggplot()+
geom_multi_raster(aes(xmin=xmin, xmax=xmax,
ymin=ymin, ymax=ymax, raster=mycolor))
#
# Example 2: the same as example 1
# except flip=TRUE.
ggplot()+coord_flip()+
geom_multi_raster(aes(xmin=xmin, xmax=xmax,
ymin=ymin, ymax=ymax, raster=mycolor), flip=TRUE)
|
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