HTMLcopy
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<div id="container"></div>
CSScopy
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html, body, #container {
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width: 100%;
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height: 100%;
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margin: 0;
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padding: 0;
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}
JavaScriptcopy
x
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anychart.onDocumentReady(function () {
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var dataTable = anychart.data.table();
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dataTable.addData(get_dji_daily_short_data());
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var mapping = dataTable.mapAs({value: 1});
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var chart = anychart.stock();
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var indicator = dataTable.createComputer(mapping);
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// Adds output field.
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indicator.addOutputField('customField', 'customUid');
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indicator.setContext({period: 2000});
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indicator.setCalculationFunction(function(row) {
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row.set('customField', row.get('value') + this.period);
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});
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var indicatorMapping = dataTable.mapAs({value: 'customUid'});
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var plot = chart.plot();
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plot.column(mapping);
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plot.line(indicatorMapping);
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plot.getSeries(1).name('Custom indicator');
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// Returns negative number of column.
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var number = indicator.addOutputField();
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chart.title('Number of column: ' + number);
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chart.container('container');
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chart.draw();
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});