node-highcharts-exporting

Easy to use exporting-server by HighCharts

##Install

$ npm install node-highcharts-exporting

##Usage

var exporting = require("node-highcharts-exporting");
var fs = require('fs');


exporting({
    data : {
        xAxis: {
            categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
                'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
        },
        series: [{
            data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0,
                135.6, 148.5, 216.4, 194.1, 95.6, 54.4]
        }]
    }

    options : {
        title : {text : "test"} ,
        "yAxis" : {"title" : {"text": "test" }}
    }

} , function (err , data){
    // data had encode base64 , should be decode
    fs.writeFile('chart.png', new Buffer(data, 'base64'), function() {
            console.log('Written to chart.png');
        });
})

##how it work The API is used:

exporting(options , callback)

options

• data [object] - Highcharts configuration object.
• scale [num] - A scaling factor for a higher image resolution. Maximum scaling is set to 4x. Remember that the width parameter has a higher precedence over scaling. default is 1
• width [num] - The exact pixel width of the exported image. Defaults to chart.width or 600px. Maximum width is 2000px.
• type [string] - Image format , the type can be of jpg, png, pfd or svg for , default is png.
• constr [string] - Can be one of Chart or StockChart. This depends on whether you want to generate Highstock or basic Highcharts
• executed [function] - The executed is a function which will be called in the constructor of Highcharts to be executed , the highchart object should as parameter pass into the function and named chart
• options[object] - The options is init for Highcharts , see Highcharts.setOptions

callback

• when file generated and will be called