Usage
qdrawLine(p, x, y, stroke)
qdrawSegment(p, x0, y0, x1, y1, stroke)
qdrawPoint(p, x, y, stroke)
qdrawRect(p, xleft, ybottom, xright, ytop, stroke, fill)
qdrawCircle(p, x, y, r, stroke, fill)
qdrawPolygon(p, x, y, stroke, fill)
qdrawPath(p, path, stroke, fill)
qdrawText(p, text, x, y, halign=c("center", "left", "right"), valign=c("center",
"basecenter", "baseline", "bottom", "top"), rot=0, color, cex=1,
hcex=cex, vcex=cex)
qdrawImage(p, image, x, y)
qdrawGlyph(p, path, x, y, cex, stroke, fill)Arguments
x
The X coordinate vector, recycled. For polygons and
polylines, NA values separate the graphical primitives.
y
The Y coordinate vector, recycled. For polygons and
polylines, NA values separate the graphical primitives.
stroke
The vector of stroke colors, either a C++
QColor object, a matrix returned by col2rgb
or any valid input to col2rgb, recycled x0
The vector of first X coordinates, recycled
y0
The vector of first Y coordinates, recycled
x1
The vector of second X coordinates, recycled
y1
The vector of second Y coordinates, recycled
fill
The vector of fill colors, either a C++
QColor object, a matrix returned by col2rgb
or any valid input to col2rgb, recycled xleft
The vector of left X coordinates for a rectangle, recycled
ybottom
The vector of bottom Y coordinates for a rectangle, recycled
xright
The vector of right X coordinates for a rectangle, recycled
ytop
The vector of top Y coordinates for a rectangle, recycled
r
The radius of the circle, in device coordinates, recycled
path
A C++ QPainterPath object describing the glyph,
or a list of such objects for qdrawPath.
text
The vector of strings to draw, recycled
halign
The side of the text to horizontally align to the coordinate
valign
The side of the text to vertically align to the
coordinate. Besides the obvious alignment options, there are two
different ways to center the text: according to the entire text
extents ("center") or only according to the region above the
baseline ("basecenter"). The former may be better for plotting
text, while the latter may be better for labeling.
rot
The vector of the text rotations, in degrees, recycled
color
The stroke color of the text
cex
The vector of numeric expansion factors of the glyphs, recycled
hcex
The vector of numeric horizontal expansion factors of
the glyphs, recycled. Overrides the cex in the horizontal
direction.
vcex
The vector of numeric vertical expansion factors of
the glyphs, recycled. Overrides the cex in the vertical
direction.