▼ |  | Mr Lib: Extra GUI Libraries

1 | Aligned Pasteboard
2 | Bitmap Label
3 | Cache-image Snip
4 | Close Icon
5 | GIF and Animated GIF Writing
6 | Graphs
7 | Hierarchical List Control
8 | Include Bitmap
9 | Interactive Value Port
10 | Name Message
11 | Path Dialog
12 | Plot
13 | Switchable Button
14 | Image Core
15 | Matrix Snip
16 | Te X Table
17 | Acknowledgments
| Index

On this page:

data-set
plot-setup
plot

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### 12`` Plot

(require mrlib/plot)

The mrlib/plot library provides a simple tool for plotting data values to a device context.

This is an old library, kept only for compatibility. You will undoubtedly want to use the plot library instead, which offers many more features and is actively maintained.

> > struct

> > (struct |  | data-set (points connected? pen min-x max-x min-y max-y)
> > |  | #:extra-constructor-name make-data-set)

> points : (listof (is-a?/c point%))
> connected? : any/c
> pen : (is-a?/c pen%)
> min-x : real?
> max-x : real?
> min-y : real?
> max-y : real?

The points field contains the data values to plot, and connected? indicates whether the points are connected by a line. The pen field provides a pen for plotting points/lines. The remaining fields determine the plotting area within a drawing context.

> > struct

> > (struct |  | plot-setup | ( | axis-label-font
> > |  |  |  | axis-number-font
> > |  |  |  | axis-pen
> > |  |  |  | grid?
> > |  |  |  | grid-pen
> > |  |  |  | x-axis-marking
> > |  |  |  | y-axis-marking
> > |  |  |  | x-axis-label
> > |  |  |  | y-axis-label)
> > |  | #:extra-constructor-name make-plot-setup)

> axis-label-font : (is-a?/c font%)
> axis-number-font : (is-a?/c font%)
> axis-pen : (is-a?/c pen)
> grid? : any/c
> grid-pen : (is-a?/c pen)
> x-axis-marking : (listof real?)
> y-axis-marking : (listof real?)
> x-axis-label : string?
> y-axis-label : string?

Configures a plot. The grid? field determines whether to draw a grid at axis markings, and the x-axis-marking and y-axis-marking lists supply locations for marks on each axis. The other fields are self-explanatory.

> > procedure

> > (plot dc data setup) → void?

> dc : (is-a?/c dc<%>)
> data : (listof data-set?)
> setup : plot-setup?

Draws the data-sets in data into the given dc. Uses drawing-context coordinates in data-sets that will accommodate all of the data sets.
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