PieChart

Overview #

Pie chart is probably the most commonly used charts. They are divided into segments, the arc of each segment shows the proportional value of each piece of data.

Code:

PieChart::create(array(
    "dataSource"=>$this->dataStore("category_amount")
    "columns"=>array("category","amount")
))

With the minimum settings above, we had a PieChart to show percent of each category contributing to the whole sum of amount.

Settings #

name	type	description
`name`	string	Set name for chart. It is optional
`title`	string	Title of the chart
`dataSource`	mixed	Set the data source for chart, accepting DataStore, DataSource, Process object and even array in table or associate format
`columns`	array	List of columns used to draw chart
`options`	array	Extra options for line chart or area chart, please view options section for more details

Column settings #

In PieChart and DonutChart, the first column data will be used for labeling and the next columns are used for data. Each data column can have extra settings

Example:

PieChart::create(array(
    "dataSource"=>$this->dataStore("category_amount"),
    "columns"=>array(
        "category",
        "amount"=>array(
            "label"=>"Amount",
            "type"=>"number",
            "prefix"=>"$",
        )
    )
))

name	type	default	description
`label`	string		Set label for column
`type`	string		Type of columns `number`,`string`,`datetime`
`prefix`	string		Set prefix for value, for example `$`
`suffix`	string		Set suffix for value
`formatValue`	string/function		Accept string or function. For example: `"formatValue"=>"@value USD"` or `"formatValue"=>function($value){return $value." USD";}`
`decimals`	number		The number of number after decimal points
`thousandSeparator`	string	`,`	Specify how thousand is separated
`decimalPoint`	string	`.`	Specify decimal point
`config`	array		Contain special settings of chart js config for series, see below ChartJs configuration for column for more details

Config for column #

There are several extra settings for column under the config property of column. Those are optional.

PieChart::create(array(
    "dataSource"=>$this->dataStore("category_amount"),
    "columns"=>array(
        "category",
        "amount"=>array(
            "label"=>"Amount",
            "type"=>"number",
            "prefix"=>"$",
            "config"=>array(
                "backgroundColor"=>"#dddddd",
            )
        )
    )
))

name	type	description
`backgroundColor`	string[]	The fill color of the arcs in the dataset.
`borderColor`	string[]	The border color of the arcs in the dataset.
`borderWidth`	number[]	The border width of the arcs in the dataset.
`hoverBackgroundColor`	string[]	The fill colour of the arcs when hovered.
`hoverBorderColor`	string[]	The stroke colour of the arcs when hovered.
`hoverBorderWidth`	number[]	The stroke width of the arcs when hovered.

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