Candlestick Chart Updates

[AlParticipant]

I am having trouble updating candlestick charts. I started with the sample and added my own update function as follows:
chart = $(‘#chartContainer’).jqxChart(‘getInstance’);

function addCandle(message) {
if (candles.constructor === Array) {
var c = {};candles = chart.source.records;
c[‘Date’] = message.LastUpdate;
c[‘SPOpen’] = message.ContinuousCandlePortable.Open;
c[‘SPHigh’] = message.ContinuousCandlePortable.High;
c[‘SPLow’] = message.ContinuousCandlePortable.Low;
c[‘SPClose’] = message.ContinuousCandlePortable.Closebid;
c[‘SPVolume’] = message.ContinuousCandlePortable.Volume;
candles.push(c);
chart.update();
}}

when addCandle is called the chart disappears. all the functions are called without problem and the data in the candle is valid.

2 questions:

1) is there a sample available that updates candlestick charts?
2) I notice a member uid in the samples chart.source.records, where is that coming from? is that inserted by the data adapter?

Thanks a lot,

[AlParticipant]

I am using the baseUnit to be 1 sec on x axis. Could that be a problem?

xAxis:
{
dataField: ‘Date’,
formatFunction: function (value) {
return value.getDate() + ‘-‘ + months[value.getMonth()] + ‘\” + value.getFullYear().toString().substring(2);
//return $.jqx.dataFormat.formatdate(value, “hh:mm:ss”, ‘en-us’);
},
type: ‘date’,
baseUnit: ‘second’,
unitInterval: 10,
valuesOnTicks: true,
minValue: new Date(2014, 12, 5, 18),
maxValue: new Date(2014, 12, 5, 19)

[Peter StoevKeymaster]

Hello Al,

I would suggest you to provide a full example and preferably post it in jsfiddle. I would also suggest you to check again your Chart’s initialization code and how you update the Chart. Basically, it does not matter whether you update Line, Cadlestick, Column or other Chart type.

Best Regards,
Peter Stoev

jQWidgets Team
http://www.jqwidgets.com/

[Author]

Posts