9 Plot and Renderer Parameters

▼ |  | PLo T: Graph Plotting

1 | Introduction
2 | 2D Plot Procedures
3 | 2D Renderers
4 | 3D Plot Procedures
5 | 3D Renderers
6 | Nonrenderers
7 | Axis Transforms and Ticks
8 | Plot Utilities
9 | Plot and Renderer Parameters
10 | Plot Contracts
11 | Porting From PLo T <= 5.1.3
12 | Compatibility Module

► | 9 | Plot and Renderer Parameters

9.1 | Compatibility
9.2 | Output
9.3 | General Appearance
9.4 | Lines
9.5 | Intervals
9.6 | Points
9.7 | Vector Fields
9.8 | Error Bars
9.9 | Contours and Contour Intervals
9.10 | Rectangles
9.11 | Decorations
9.12 | 3D General Appearance
9.13 | Surfaces
9.14 | Contour Surfaces
9.15 | Isosurfaces

On this page:

9.1`` Compatibility
plot-deprecation-warnings?
9.2`` Output
plot-new-window?
plot-width
plot-height
plot-jpeg-quality
plot-ps/ pdf-interactive?
9.3`` General Appearance
plot-foreground
plot-background
plot-foreground-alpha
plot-background-alpha
plot-font-size
plot-font-family
plot-line-width
plot-legend-anchor
plot-legend-box-alpha
plot-tick-size
plot-title
plot-x-label
plot-y-label
plot-z-label
plot-x-far-label
plot-y-far-label
plot-z-far-label
plot-x-tick-label-anchor
plot-x-tick-label-angle
plot-y-tick-label-anchor
plot-y-tick-label-angle
plot-x-far-tick-label-anchor
plot-x-far-tick-label-angle
plot-y-far-tick-label-anchor
plot-y-far-tick-label-angle
plot-x-axis?
plot-x-far-axis?
plot-y-axis?
plot-y-far-axis?
plot-z-axis?
plot-z-far-axis?
plot-animating?
animated-samples
plot-decorations?
9.4`` Lines
line-samples
line-color
line-width
line-style
line-alpha
9.5`` Intervals
interval-color
interval-style
interval-line1-color
interval-line1-width
interval-line1-style
interval-line2-color
interval-line2-width
interval-line2-style
interval-alpha
9.6`` Points
point-sym
point-color
point-size
point-line-width
point-alpha
9.7`` Vector Fields
vector-field-samples
vector-field-color
vector-field-line-width
vector-field-line-style
vector-field-scale
vector-field-alpha
vector-field3d-samples
9.8`` Error Bars
error-bar-width
error-bar-color
error-bar-line-width
error-bar-line-style
error-bar-alpha
9.9`` Contours and Contour Intervals
default-contour-colors
default-contour-fill-colors
contour-samples
contour-levels
contour-colors
contour-widths
contour-styles
contour-alphas
contour-interval-colors
contour-interval-styles
contour-interval-alphas
9.10`` Rectangles
rectangle-color
rectangle-style
rectangle-line-color
rectangle-line-width
rectangle-line-style
rectangle-alpha
rectangle3d-line-width
discrete-histogram-gap
discrete-histogram-skip
discrete-histogram-invert?
stacked-histogram-alphas
stacked-histogram-colors
stacked-histogram-line-colors
stacked-histogram-line-styles
stacked-histogram-line-widths
stacked-histogram-styles
9.11`` Decorations
x-axis-alpha
y-axis-alpha
z-axis-alpha
x-axis-far?
y-axis-far?
z-axis-far?
x-axis-ticks?
y-axis-ticks?
z-axis-ticks?
x-axis-labels?
y-axis-labels?
z-axis-labels?
polar-axes-number
polar-axes-alpha
polar-axes-ticks?
polar-axes-labels?
label-anchor
label-angle
label-alpha
label-point-size
9.12`` 3D General Appearance
plot3d-samples
plot3d-angle
plot3d-altitude
plot3d-ambient-light
plot3d-diffuse-light?
plot3d-specular-light?
9.13`` Surfaces
surface-color
surface-style
surface-line-color
surface-line-width
surface-line-style
surface-alpha
9.14`` Contour Surfaces
contour-interval-line-colors
contour-interval-line-widths
contour-interval-line-styles
9.15`` Isosurfaces
default-isosurface-colors
default-isosurface-line-colors
isosurface-levels
isosurface-colors
isosurface-styles
isosurface-line-colors
isosurface-line-widths
isosurface-line-styles
isosurface-alphas

5.3.6
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### 9`` Plot and Renderer Parameters

#### 9.1`` Compatibility

> > > parameter (plot-deprecation-warnings?) → boolean?
> > > (plot-deprecation-warnings? warnings?) → void?
> > > warnings? : boolean?
> = | #f

> When #t, prints a deprecation warning to current-error-port on the first use of mix, line, contour, shade, surface, or a keyword argument of plot or plot3d that exists solely for backward compatibility.

#### 9.2`` Output

> > > parameter (plot-new-window?) → boolean?
> > > (plot-new-window? window?) → void?
> > > window? : boolean?
> = | #f

> When #t, plot and plot3d open a new window for each plot instead of returning an image-snip%.

> Users of command-line Racket, which cannot display image snips, should enter

> > (plot-new-window? #t)

> before using plot or plot3d.

> > > parameter (plot-width) → exact-positive-integer?
> > > (plot-width width) → void?
> > > width : exact-positive-integer?
> = | 400

> > > parameter (plot-height) → exact-positive-integer?
> > > (plot-height height) → void?
> > > height : exact-positive-integer?
> = | 400

> The width and height of a plot, in logical drawing units (e.g. pixels for bitmap plots).

> > > parameter (plot-jpeg-quality) → (integer-in 0 100)
> > > (plot-jpeg-quality quality) → void?
> > > quality : (integer-in 0 100)
> = | 100

> The quality of JPEG images written by plot-file and plot3d-file. See save-file.

> > > parameter (plot-ps/pdf-interactive?) → boolean?
> > > (plot-ps/pdf-interactive? interactive?) → void?
> > > interactive? : boolean?
> = | #f

> If #t, plot-file and plot3d-file open a dialog when writing PostScript or PDF files. See post-script-dc% and pdf-dc%.

#### 9.3`` General Appearance

> > > parameter (plot-foreground) → plot-color/c
> > > (plot-foreground color) → void?
> > > color : plot-color/c
> = | 0

> > > parameter (plot-background) → plot-color/c
> > > (plot-background color) → void?
> > > color : plot-color/c
> = | 0

> The plot foreground and background color. That both are 0 by default is not a mistake: for foreground colors, 0 is interpreted as black; for background colors, 0 is interpreted as white. See ->pen-color and ->brush-color for details on how PLoT interprets integer colors.

> > > parameter (plot-foreground-alpha) → (real-in 0 1)
> > > (plot-foreground-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1

> > > parameter (plot-background-alpha) → (real-in 0 1)
> > > (plot-background-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1

> The opacity of the background and foreground colors.

> > > parameter (plot-font-size) → (>=/c 0)
> > > (plot-font-size size) → void?
> > > size : (>=/c 0)
> = | 11

> The font size of the title, axis labels, tick labels, and other labels, in drawing units.

> > > parameter (plot-font-family) → font-family/c
> > > (plot-font-family family) → void?
> > > family : font-family/c
> = | 'roman

> The font family used for the title and labels.

> > > parameter (plot-line-width) → (>=/c 0)
> > > (plot-line-width width) → void?
> > > width : (>=/c 0)
> = | 1

> The width of axis lines and major tick lines. (Minor tick lines are half this width.)

> > > parameter (plot-legend-anchor) → anchor/c
> > > (plot-legend-anchor anchor) → void?
> > > anchor : anchor/c
> = | 'top-left

> Controls the placement of the legend.

> > > parameter (plot-legend-box-alpha) → (real-in 0 1)
> > > (plot-legend-box-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 2/3

> The opacity of the filled rectangle behind the legend entries.

> > > parameter (plot-tick-size) → (>=/c 0)
> > > (plot-tick-size size) → void?
> > > size : (>=/c 0)
> = | 10

> The length of tick lines, in drawing units.

> > > parameter (plot-title) → (or/c string? #f)
> > > (plot-title title) → void?
> > > title : (or/c string? #f)
> = | #f

> > > parameter (plot-x-label) → (or/c string? #f)
> > > (plot-x-label label) → void?
> > > label : (or/c string? #f)
> = | "x axis"

> > > parameter (plot-y-label) → (or/c string? #f)
> > > (plot-y-label label) → void?
> > > label : (or/c string? #f)
> = | "y axis"

> > > parameter (plot-z-label) → (or/c string? #f)
> > > (plot-z-label label) → void?
> > > label : (or/c string? #f)
> = | #f

> The title and axis labels. A #f value means the label is not drawn and takes no space. A "" value effectively means the label is not drawn, but it takes space.

> > > parameter (plot-x-far-label) → (or/c string? #f)
> > > (plot-x-far-label label) → void?
> > > label : (or/c string? #f)
> = | #f

> > > parameter (plot-y-far-label) → (or/c string? #f)
> > > (plot-y-far-label label) → void?
> > > label : (or/c string? #f)
> = | #f

> > > parameter (plot-z-far-label) → (or/c string? #f)
> > > (plot-z-far-label label) → void?
> > > label : (or/c string? #f)
> = | #f

> The axis labels for “far” axes. See plot-x-ticks for a discussion of near and far axes.

> > > parameter (plot-x-tick-label-anchor) → anchor/c
> > > (plot-x-tick-label-anchor anchor) → void?
> > > anchor : anchor/c
> = | 'top

> > > parameter (plot-x-tick-label-angle) → real?
> > > (plot-x-tick-label-angle angle) → void?
> > > angle : real?
> = | 0

> > > parameter (plot-y-tick-label-anchor) → anchor/c
> > > (plot-y-tick-label-anchor anchor) → void?
> > > anchor : anchor/c
> = | 'right

> > > parameter (plot-y-tick-label-angle) → real?
> > > (plot-y-tick-label-angle angle) → void?
> > > angle : real?
> = | 0

> > > parameter (plot-x-far-tick-label-anchor) → anchor/c
> > > (plot-x-far-tick-label-anchor anchor) → void?
> > > anchor : anchor/c
> = | 'bottom

> > > parameter (plot-x-far-tick-label-angle) → real?
> > > (plot-x-far-tick-label-angle angle) → void?
> > > angle : real?
> = | 0

> > > parameter (plot-y-far-tick-label-anchor) → anchor/c
> > > (plot-y-far-tick-label-anchor anchor) → void?
> > > anchor : anchor/c
> = | 'left

> > > parameter (plot-y-far-tick-label-angle) → real?
> > > (plot-y-far-tick-label-angle angle) → void?
> > > angle : real?
> = | 0

> Anchor and angles for axis tick labels (2D only). Angles are in degrees. The anchor refers to the part of the label attached to the end of the tick line.

> Set these when labels would otherwise overlap; for example, in histograms with long category names.

> > > (parameterize ([plot-x-tick-label-anchor 'top-right]
> > [plot-x-tick-label-angle 30])
> > (plot (discrete-histogram '(#(really-long-category-name-1 2)
> > #(long-category-name-2 1.75)
> > #(long-category-name-3 2.5)))))

> > > parameter (plot-x-axis?) → boolean?
> > > (plot-x-axis? axis?) → void?
> > > axis? : boolean?
> = | #t

> > > parameter (plot-x-far-axis?) → boolean?
> > > (plot-x-far-axis? axis?) → void?
> > > axis? : boolean?
> = | #t

> > > parameter (plot-y-axis?) → boolean?
> > > (plot-y-axis? axis?) → void?
> > > axis? : boolean?
> = | #t

> > > parameter (plot-y-far-axis?) → boolean?
> > > (plot-y-far-axis? axis?) → void?
> > > axis? : boolean?
> = | #t

> > > parameter (plot-z-axis?) → boolean?
> > > (plot-z-axis? axis?) → void?
> > > axis? : boolean?
> = | #t

> > > parameter (plot-z-far-axis?) → boolean?
> > > (plot-z-far-axis? axis?) → void?
> > > axis? : boolean?
> = | #t

> When any of these is #f, the corresponding axis is not drawn.

> Use these along with x-axis and y-axis if you want axes that intersect the origin or some other point.

> > > parameter (plot-animating?) → boolean?
> > > (plot-animating? animating?) → void?
> > > animating? : boolean?
> = | #f

> When #t, certain renderers draw simplified plots to speed up drawing. PLoT sets it to #t, for example, when a user is clicking and dragging a 3D plot to rotate it.

> > > procedure (animated-samples samples) → (and/c exact-integer? (>=/c 2))
> > > samples : (and/c exact-integer? (>=/c 2))
> > = |
> > (cond [(plot-animating?) (max 2 (ceiling (* 1/4 samples)))]
> > [else samples])

> Given a number of samples, returns the number of samples to use. This returns samples when plot-animating? is #f.

> > > parameter (plot-decorations?) → boolean?
> > > (plot-decorations? decorations?) → void?
> > > decorations? : boolean?
> = | #t

> When #f, axes, axis labels, ticks, tick labels, and the title are not drawn.

#### 9.4`` Lines

> > > parameter (line-samples) → (and/c exact-integer? (>=/c 2))
> > > (line-samples samples) → void?
> > > samples : (and/c exact-integer? (>=/c 2))
> = | 500

> > > parameter (line-color) → plot-color/c
> > > (line-color color) → void?
> > > color : plot-color/c
> = | 1

> > > parameter (line-width) → (>=/c 0)
> > > (line-width width) → void?
> > > width : (>=/c 0)
> = | 1

> > > parameter (line-style) → plot-pen-style/c
> > > (line-style style) → void?
> > > style : plot-pen-style/c
> = | 'solid

> > > parameter (line-alpha) → (real-in 0 1)
> > > (line-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1

#### 9.5`` Intervals

> > > parameter (interval-color) → plot-color/c
> > > (interval-color color) → void?
> > > color : plot-color/c
> = | 3

> > > parameter (interval-style) → plot-brush-style/c
> > > (interval-style style) → void?
> > > style : plot-brush-style/c
> = | 'solid

> > > parameter (interval-line1-color) → plot-color/c
> > > (interval-line1-color color) → void?
> > > color : plot-color/c
> = | 3

> > > parameter (interval-line1-width) → (>=/c 0)
> > > (interval-line1-width width) → void?
> > > width : (>=/c 0)
> = | 1

> > > parameter (interval-line1-style) → plot-pen-style/c
> > > (interval-line1-style style) → void?
> > > style : plot-pen-style/c
> = | 'solid

> > > parameter (interval-line2-color) → plot-color/c
> > > (interval-line2-color color) → void?
> > > color : plot-color/c
> = | 3

> > > parameter (interval-line2-width) → (>=/c 0)
> > > (interval-line2-width width) → void?
> > > width : (>=/c 0)
> = | 1

> > > parameter (interval-line2-style) → plot-pen-style/c
> > > (interval-line2-style style) → void?
> > > style : plot-pen-style/c
> = | 'solid

> > > parameter (interval-alpha) → (real-in 0 1)
> > > (interval-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 3/4

#### 9.6`` Points

> > > parameter (point-sym) → point-sym/c
> > > (point-sym sym) → void?
> > > sym : point-sym/c
> = | 'circle

> > > parameter (point-color) → plot-color/c
> > > (point-color color) → void?
> > > color : plot-color/c
> = | 0

> > > parameter (point-size) → (>=/c 0)
> > > (point-size size) → void?
> > > size : (>=/c 0)
> = | 6

> > > parameter (point-line-width) → (>=/c 0)
> > > (point-line-width width) → void?
> > > width : (>=/c 0)
> = | 1

> > > parameter (point-alpha) → (real-in 0 1)
> > > (point-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1

#### 9.7`` Vector Fields

> > > parameter (vector-field-samples) → exact-positive-integer?
> > > (vector-field-samples samples) → void?
> > > samples : exact-positive-integer?
> = | 20

> > > parameter (vector-field-color) → plot-color/c
> > > (vector-field-color color) → void?
> > > color : plot-color/c
> = | 1

> > > parameter (vector-field-line-width) → (>=/c 0)
> > > (vector-field-line-width width) → void?
> > > width : (>=/c 0)
> = | 2/3

> > > parameter (vector-field-line-style) → plot-pen-style/c
> > > (vector-field-line-style style) → void?
> > > style : plot-pen-style/c
> = | 'solid

> > > parameter (vector-field-scale)
> > > → (or/c real? (one-of/c 'auto 'normalized))
> > > (vector-field-scale scale) → void?
> > > scale : (or/c real? (one-of/c 'auto 'normalized))
> = | 'auto

> > > parameter (vector-field-alpha) → (real-in 0 1)
> > > (vector-field-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1

> > > parameter (vector-field3d-samples) → exact-positive-integer?
> > > (vector-field3d-samples samples) → void?
> > > samples : exact-positive-integer?
> = | 9

#### 9.8`` Error Bars

> > > parameter (error-bar-width) → (>=/c 0)
> > > (error-bar-width width) → void?
> > > width : (>=/c 0)
> = | 6

> > > parameter (error-bar-color) → plot-color/c
> > > (error-bar-color color) → void?
> > > color : plot-color/c
> = | 0

> > > parameter (error-bar-line-width) → (>=/c 0)
> > > (error-bar-line-width width) → void?
> > > width : (>=/c 0)
> = | 1

> > > parameter (error-bar-line-style) → plot-pen-style/c
> > > (error-bar-line-style style) → void?
> > > style : plot-pen-style/c
> = | 'solid

> > > parameter (error-bar-alpha) → (real-in 0 1)
> > > (error-bar-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 2/3

#### 9.9`` Contours and Contour Intervals

> > > procedure (default-contour-colors zs) → (listof plot-color/c)
> > > zs : (listof real?)
> > = |
> > (color-seq* (list (->pen-color 5) (->pen-color 0) (->pen-color 1))
> > (length zs))

> > > procedure (default-contour-fill-colors z-ivls) → (listof plot-color/c)
> > > z-ivls : (listof ivl?)
> > = |
> > (color-seq* (list (->brush-color 5) (->brush-color 0) (->brush-color 1))
> > (length z-ivls))

> > > parameter (contour-samples) → (and/c exact-integer? (>=/c 2))
> > > (contour-samples samples) → void?
> > > samples : (and/c exact-integer? (>=/c 2))
> = | 51

> > > parameter (contour-levels)
> > > → (or/c 'auto exact-positive-integer? (listof real?))
> > > (contour-levels levels) → void?
> > > levels : (or/c 'auto exact-positive-integer? (listof real?))
> = | 'auto

> > > parameter (contour-colors) → (plot-colors/c (listof real?))
> > > (contour-colors colors) → void?
> > > colors : (plot-colors/c (listof real?))
> = | default-contour-colors

> > > parameter (contour-widths) → (pen-widths/c (listof real?))
> > > (contour-widths widths) → void?
> > > widths : (pen-widths/c (listof real?))
> = | '(1)

> > > parameter (contour-styles) → (plot-pen-styles/c (listof real?))
> > > (contour-styles styles) → void?
> > > styles : (plot-pen-styles/c (listof real?))
> = | '(solid long-dash)

> > > parameter (contour-alphas) → (alphas/c (listof real?))
> > > (contour-alphas alphas) → void?
> > > alphas : (alphas/c (listof real?))
> = | '(1)

> > > parameter (contour-interval-colors) → (plot-colors/c (listof ivl?))
> > > (contour-interval-colors colors) → void?
> > > colors : (plot-colors/c (listof ivl?))
> = | default-contour-fill-colors

> > > parameter (contour-interval-styles)
> > > → (plot-brush-styles/c (listof ivl?))
> > > (contour-interval-styles styles) → void?
> > > styles : (plot-brush-styles/c (listof ivl?))
> = | '(solid)

> > > parameter (contour-interval-alphas) → (alphas/c (listof ivl?))
> > > (contour-interval-alphas alphas) → void?
> > > alphas : (alphas/c (listof ivl?))
> = | '(1)

#### 9.10`` Rectangles

> > > parameter (rectangle-color) → plot-color/c
> > > (rectangle-color color) → void?
> > > color : plot-color/c
> = | 3

> > > parameter (rectangle-style) → plot-brush-style/c
> > > (rectangle-style style) → void?
> > > style : plot-brush-style/c
> = | 'solid

> > > parameter (rectangle-line-color) → plot-color/c
> > > (rectangle-line-color color) → void?
> > > color : plot-color/c
> = | 3

> > > parameter (rectangle-line-width) → (>=/c 0)
> > > (rectangle-line-width width) → void?
> > > width : (>=/c 0)
> = | 1

> > > parameter (rectangle-line-style) → plot-pen-style/c
> > > (rectangle-line-style style) → void?
> > > style : plot-pen-style/c
> = | 'solid

> > > parameter (rectangle-alpha) → (real-in 0 1)
> > > (rectangle-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1

> > > parameter (rectangle3d-line-width) → (>=/c 0)
> > > (rectangle3d-line-width width) → void?
> > > width : (>=/c 0)
> = | 1/3

> > > parameter (discrete-histogram-gap) → (real-in 0 1)
> > > (discrete-histogram-gap gap) → void?
> > > gap : (real-in 0 1)
> = | 1/8

> > > parameter (discrete-histogram-skip) → (>=/c 0)
> > > (discrete-histogram-skip skip) → void?
> > > skip : (>=/c 0)
> = | 1

> > > parameter (discrete-histogram-invert?) → boolean?
> > > (discrete-histogram-invert? invert?) → void?
> > > invert? : boolean?
> = | #f

> > > parameter (stacked-histogram-alphas) → (alphas/c nat/c)
> > > (stacked-histogram-alphas alphas) → void?
> > > alphas : (alphas/c nat/c)
> = | '(1)

> > > parameter (stacked-histogram-colors) → (plot-colors/c nat/c)
> > > (stacked-histogram-colors colors) → void?
> > > colors : (plot-colors/c nat/c)
> = | (λ (n) (build-list n add1))

> > > parameter (stacked-histogram-line-colors) → (plot-colors/c nat/c)
> > > (stacked-histogram-line-colors colors) → void?
> > > colors : (plot-colors/c nat/c)
> = | (stacked-histogram-colors)

> > > parameter (stacked-histogram-line-styles) → (plot-pen-styles/c nat/c)
> > > (stacked-histogram-line-styles styles) → void?
> > > styles : (plot-pen-styles/c nat/c)
> = | '(solid)

> > > parameter (stacked-histogram-line-widths) → (pen-widths/c nat/c)
> > > (stacked-histogram-line-widths widths) → void?
> > > widths : (pen-widths/c nat/c)
> = | '(1)

> > > parameter (stacked-histogram-styles) → (plot-brush-styles/c nat/c)
> > > (stacked-histogram-styles styles) → void?
> > > styles : (plot-brush-styles/c nat/c)
> = | '(solid)

#### 9.11`` Decorations

These parameters do not control the typical appearance of plots. Instead, they control the look of renderers that add specific decorations, such as labeled points.

> > > parameter (x-axis-alpha) → (real-in 0 1)
> > > (x-axis-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1

> > > parameter (y-axis-alpha) → (real-in 0 1)
> > > (y-axis-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1

> > > parameter (z-axis-alpha) → (real-in 0 1)
> > > (z-axis-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1

> > > parameter (x-axis-far?) → boolean?
> > > (x-axis-far? far?) → void?
> > > far? : boolean?
> = | #f

> > > parameter (y-axis-far?) → boolean?
> > > (y-axis-far? far?) → void?
> > > far? : boolean?
> = | #f

> > > parameter (z-axis-far?) → boolean?
> > > (z-axis-far? far?) → void?
> > > far? : boolean?
> = | #f

> > > parameter (x-axis-ticks?) → boolean?
> > > (x-axis-ticks? ticks?) → void?
> > > ticks? : boolean?
> = | #t

> > > parameter (y-axis-ticks?) → boolean?
> > > (y-axis-ticks? ticks?) → void?
> > > ticks? : boolean?
> = | #t

> > > parameter (z-axis-ticks?) → boolean?
> > > (z-axis-ticks? ticks?) → void?
> > > ticks? : boolean?
> = | #t

> > > parameter (x-axis-labels?) → boolean?
> > > (x-axis-labels? labels?) → void?
> > > labels? : boolean?
> = | #f

> > > parameter (y-axis-labels?) → boolean?
> > > (y-axis-labels? labels?) → void?
> > > labels? : boolean?
> = | #f

> > > parameter (z-axis-labels?) → boolean?
> > > (z-axis-labels? labels?) → void?
> > > labels? : boolean?
> = | #f

> > > parameter (polar-axes-number) → exact-nonnegative-integer?
> > > (polar-axes-number number) → void?
> > > number : exact-nonnegative-integer?
> = | 12

> > > parameter (polar-axes-alpha) → (real-in 0 1)
> > > (polar-axes-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1/2

> > > parameter (polar-axes-ticks?) → boolean?
> > > (polar-axes-ticks? ticks?) → void?
> > > ticks? : boolean?
> = | #t

> > > parameter (polar-axes-labels?) → boolean?
> > > (polar-axes-labels? labels?) → void?
> > > labels? : boolean?
> = | #t

> > > parameter (label-anchor) → anchor/c
> > > (label-anchor anchor) → void?
> > > anchor : anchor/c
> = | 'left

> > > parameter (label-angle) → real?
> > > (label-angle angle) → void?
> > > angle : real?
> = | 0

> > > parameter (label-alpha) → (real-in 0 1)
> > > (label-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1

> > > parameter (label-point-size) → (>=/c 0)
> > > (label-point-size size) → void?
> > > size : (>=/c 0)
> = | 4

#### 9.12`` 3D General Appearance

> > > parameter (plot3d-samples) → (and/c exact-integer? (>=/c 2))
> > > (plot3d-samples samples) → void?
> > > samples : (and/c exact-integer? (>=/c 2))
> = | 41

> > > parameter (plot3d-angle) → real?
> > > (plot3d-angle angle) → void?
> > > angle : real?
> = | 30

> > > parameter (plot3d-altitude) → real?
> > > (plot3d-altitude altitude) → void?
> > > altitude : real?
> = | 60

> > > parameter (plot3d-ambient-light) → (real-in 0 1)
> > > (plot3d-ambient-light light) → void?
> > > light : (real-in 0 1)
> = | 2/3

> > > parameter (plot3d-diffuse-light?) → boolean?
> > > (plot3d-diffuse-light? light?) → void?
> > > light? : boolean?
> = | #t

> > > parameter (plot3d-specular-light?) → boolean?
> > > (plot3d-specular-light? light?) → void?
> > > light? : boolean?
> = | #t

#### 9.13`` Surfaces

> > > parameter (surface-color) → plot-color/c
> > > (surface-color color) → void?
> > > color : plot-color/c
> = | 0

> > > parameter (surface-style) → plot-brush-style/c
> > > (surface-style style) → void?
> > > style : plot-brush-style/c
> = | 'solid

> > > parameter (surface-line-color) → plot-color/c
> > > (surface-line-color color) → void?
> > > color : plot-color/c
> = | 0

> > > parameter (surface-line-width) → (>=/c 0)
> > > (surface-line-width width) → void?
> > > width : (>=/c 0)
> = | 1/3

> > > parameter (surface-line-style) → plot-pen-style/c
> > > (surface-line-style style) → void?
> > > style : plot-pen-style/c
> = | 'solid

> > > parameter (surface-alpha) → (real-in 0 1)
> > > (surface-alpha alpha) → void?
> > > alpha : (real-in 0 1)
> = | 1

#### 9.14`` Contour Surfaces

Contour surface renderers use shared contour parameters except for the following three.

> > > parameter (contour-interval-line-colors) → (plot-colors/c (listof ivl?))
> > > (contour-interval-line-colors colors) → void?
> > > colors : (plot-colors/c (listof ivl?))
> = | '(0)

> > > parameter (contour-interval-line-widths) → (pen-widths/c (listof ivl?))
> > > (contour-interval-line-widths widths) → void?
> > > widths : (pen-widths/c (listof ivl?))
> = | '(1/3)

> > > parameter (contour-interval-line-styles)
> > > → (plot-pen-styles/c (listof ivl?))
> > > (contour-interval-line-styles styles) → void?
> > > styles : (plot-pen-styles/c (listof ivl?))
> = | '(solid)

#### 9.15`` Isosurfaces

Single isosurfaces (isosurface3d) use surface parameters. Nested isosurfaces (isosurfaces3d) use the following.

> > > procedure (default-isosurface-colors zs) → (listof plot-color/c)
> > > zs : (listof real?)
> > = |
> > (color-seq* (list (->brush-color 5) (->brush-color 0) (->brush-color 1))
> > (length zs))

> > > procedure (default-isosurface-line-colors zs) → (listof plot-color/c)
> > > zs : (listof real?)
> > = |
> > (color-seq* (list (->pen-color 5) (->pen-color 0) (->pen-color 1))
> > (length zs))

> > > parameter (isosurface-levels)
> > > → (or/c 'auto exact-positive-integer? (listof real?))
> > > (isosurface-levels levels) → void?
> > > levels : (or/c 'auto exact-positive-integer? (listof real?))
> = | 'auto

> > > parameter (isosurface-colors) → (plot-colors/c (listof real?))
> > > (isosurface-colors colors) → void?
> > > colors : (plot-colors/c (listof real?))
> = | default-isosurface-colors

> > > parameter (isosurface-styles) → (plot-brush-styles/c (listof real?))
> > > (isosurface-styles styles) → void?
> > > styles : (plot-brush-styles/c (listof real?))
> = | '(solid)

> > > parameter (isosurface-line-colors) → (plot-colors/c (listof real?))
> > > (isosurface-line-colors colors) → void?
> > > colors : (plot-colors/c (listof real?))
> = | default-isosurface-line-colors

> > > parameter (isosurface-line-widths) → (pen-widths/c (listof real?))
> > > (isosurface-line-widths widths) → void?
> > > widths : (pen-widths/c (listof real?))
> = | '(1/3)

> > > parameter (isosurface-line-styles) → (plot-pen-styles/c (listof real?))
> > > (isosurface-line-styles styles) → void?
> > > styles : (plot-pen-styles/c (listof real?))
> = | '(solid)

> > > parameter (isosurface-alphas) → (alphas/c (listof real?))
> > > (isosurface-alphas alphas) → void?
> > > alphas : (alphas/c (listof real?))
> = | '(1/2)

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