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There are instances I've run into where zeppelin (0.9.0-preview1) may interpret your numeric data as strings, **regardless of whether or not they are actually float values underneath**. This is unfortunate, as it also leads to [Highcharts Error 14](https://www.highcharts.com/errors/14/) trying to access the inner series in the chart. Putting in a `parseFloat` call here is one easy way to ensure the data are numeric when passing into the HighCharts instance.
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There are instances I've run into where zeppelin (0.9.0-preview1) may interpret your numeric data as strings, regardless of whether or not they are actually float values underneath. This is unfortunate, as it also leads to Highcharts Error 14 trying to access the inner series in the chart. Putting in some
parseFloatcalls here is one easy way to ensure the data are numeric when passing into the HighCharts instance.