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RGraph: HTML5 canvas graph library - Radial scatter chart documentation

The Radial scatter graph is, as the name suggests, a circular variant of the scatter graph.

The example file is here.

 
<script>
    window.onload = function ()
    {
        var data = [
                    [15,53,'red'],
                    [45,63,null, 'The tooltip'],
                    [48,45,'green'],
                    [52,38],
                    [51,61]
                   ];

        var rscatter= new RGraph.Rscatter('myCanvas', data);
        rscatter.Set('chart.labels', ['NE','E','SE','S','SW','W','NW','N']);
        rscatter.Set('chart.gutter', 35);
        rscatter.Draw();
    }
</script>

Properties

You can use these properties to control how the chart appears. You can set them by using the Set() method. Eg:

myRscatter.Set('name', 'value');

Margins

chart.gutter
The gutter of the graph. This is the area outside of the X and Y axis - where the labels go. If you're short on space for your labels, try increasing this.
Default: 25

Labels and text

chart.text.color
The color of the labels.
Default: black

chart.text.size
The size (in points) of the labels.
Default: 10

chart.text.font
The font used to render the text.
Default: Verdana

chart.labels
The labels, if any, for the graph.
Default: none

chart.labels.axes
This controls the axes that show the scale labels. Each letter stands for the appropriate axis (North, South, East and West)
Default: nsew

chart.labels.position
This can be either center or edge and determines the position of the labels.
Default: center

Titles

chart.title
The title of the graph, if any.
Default: null

chart.title.background
The background color (if any) for the title.
Default: null

chart.title.color
The color of the title.
Default: black

chart.title.hpos
This allows you to completely override the horizontal positioning of the title. It should be a number between 0 and 1, and is multiplied with the whole width of the canvas and then used as the horizontal position.
Default: null

chart.title.vpos
This allows you to completely override the vertical positioning of the title. It should be a number between 0 and 1, and is multiplied with the gutter and then used as the vertical position. It can be useful if you need to have a large gutter.
Default: null

Key

chart.key
An array of key information.
Default: [] (An empty array)

chart.key.background
The color of the key background. Typically white, you could set this to something like rgba(255,255,255,0.7) to allow people to see things behind it.
Default: white

chart.key.position
Determines the position of the key.Either graph (default), or gutter.
Default: graph

chart.key.position.x
This allows you to specify a specific X coordinate for the key.
Default: null

chart.key.position.y
This allows you to specify a specific Y coordinate for the key.
Default: null

chart.key.position.gutter.boxed
If you have the key in gutter mode (ie horizontal), this allows you to give a background color.
Default: true

chart.key.shadow
Whether a small drop shadow is applied to the key.
Default: false

chart.key.shadow.color
The color of the shadow.
Default: #666

chart.key.shadow.blur
The extent of the blurring effect used on the shadow.
Default: 3

chart.key.shadow.offsetx
The X offset of the shadow.
Default: 2

chart.key.shadow.offsety
The Y offset of the shadow.
Default: 2

chart.key.rounded
This controls whether the corners of the key (in graph mode) are curved. If the key is gutter mode, this has no effect.
Default: false

chart.key.color.shape
This can be square, circle or line and controls how the color indicators in the key appear.
Default: square

Interactive features

chart.contextmenu
An array of context menu items. More information on context menus is here.
Default: [] (An empty array)

chart.tooltips.effect
The animated effect used for showing tooltips. Can be either fade or expand.
Default: fade

chart.tooltips.event
This is the event that triggers the tooltips. It can be either onclick or onmousemove.
Default: onclick

chart.tooltips.css.class
This is the name of the CSS class the graph uses.
Default: RGraph_tooltip

chart.tooltips.override
If you wish to handle showing tooltips yourself, this should be a function object which does just that. There's more information on the tooltips documentation page
Default: null

chart.annotatable
Whether annotations are enabled for the chart (ie you can draw on the chart interactively.
Default: false

chart.annotate.color
If you do not allow the use of the palette, then this will be the only colour allowed for annotations.
Default: black

chart.resizable
Defaulting to false, this determines whether your graph will be resizable. Because of the numerous event handlers this has to install code on, This feature is unlikely to work with other dynamic features (the context menu is fine however).
Default: false

Zoom

chart.zoom.mode
Can be used to control whether the zoom is in thumbnail or canvas mode. Possible values are: thumbnail and canvas.
Default: canvas

chart.zoom.factor
This is the factor that the graph will be zoomed by (bigger values means more zoom)
Default: 1.5

chart.zoom.fade.in
Whether the zoomed canvas fades in or not. This also can be used to control the fade in for the zoom in thumbnail mode.
Default: true

chart.zoom.fade.out
Whether the zoomed canvas fades out or not. This also can be used to control the fade in for the zoom in thumbnail mode.
Default: true

chart.zoom.hdir
The horizontal direction of the zoom. Possible values are: left, center, right
Default: right

chart.zoom.vdir
The vertical direction of the zoom. Possible values are: up, center, down
Default: down

chart.zoom.delay
The delay (in milliseconds) between frames.
Default: 50

chart.zoom.frames
The number of frames in the zoom animation.
Default: 10

chart.zoom.shadow
Whether or not the zoomed canvas has a shadow or not.
Default: true

chart.zoom.thumbnail.width
When the zoom is in thumbnail mode, this is the width (in pixels) of the thumbnail.
Default: 75

chart.zoom.thumbnail.height
When the zoom is in thumbnail mode, this is the height (in pixels) of the thumbnail.
Default: 75

chart.zoom.background
Defaulting to true, this determines whether the zoom has a dark, semi-opaque background that covers the entire web page.
Default: true