▼ |  | 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 | Te X Table
16 | 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.

( 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 |  | 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.

( 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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