Trendline for second Y axis

[YukonJJR]

The trend line for a second Y axis is plotted on the first Y axis therefore it does not match the scale of the datapoint it represents. Is there a way to plot the trend line on a secondary (righthand) Y axis?

[JWealthall]

The beforeDraw function can be modified to select the yAxis for the dataset by changing the forEach function to

chartInstance.data.datasets.forEach(function (dataset, index) { if (dataset.trendlineLinear && chartInstance.isDatasetVisible(index)) { var datasetMeta = chartInstance.getDatasetMeta(index); // Check if a "named" yScale is being used var ySc = yScale if (dataset.yAxisID !== undefined && dataset.yAxisID !== null && chartInstance.scales[dataset.yAxisID] !== undefined) { ySc = chartInstance.scales[dataset.yAxisID]; } addFitter(datasetMeta, ctx, dataset, xScale, ySc); } });

[YukonJJR]

Thank you very much.  Worked perfectly….

Jeff Rogers IT Manager

419.873.9500 x1131

248.396.0289

419.873.9600

1300 Flagship Dr. Perrysburg, OH 43551

www.CECtops.com

    

On May 3, 2020, at 11:15 AM, John Wealthall [email protected] wrote:

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The beforeDraw function can be modified to select the yAxis for the dataset by changing the forEach function to chartInstance.data.datasets.forEach(function (dataset, index) { if (dataset.trendlineLinear && chartInstance.isDatasetVisible(index)) { var datasetMeta = chartInstance.getDatasetMeta(index); // Check if a "named" yScale is being used var ySc = yScale if (dataset.yAxisID !== undefined && dataset.yAxisID !== null && chartInstance.scales[dataset.yAxisID] !== undefined) { ySc = chartInstance.scales[dataset.yAxisID]; } addFitter(datasetMeta, ctx, dataset, xScale, ySc); } }); — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe.

[Makanz]

The beforeDraw function can be modified to select the yAxis for the dataset by changing the forEach function to

chartInstance.data.datasets.forEach(function (dataset, index) { if (dataset.trendlineLinear && chartInstance.isDatasetVisible(index)) { var datasetMeta = chartInstance.getDatasetMeta(index); // Check if a "named" yScale is being used var ySc = yScale if (dataset.yAxisID !== undefined && dataset.yAxisID !== null && chartInstance.scales[dataset.yAxisID] !== undefined) { ySc = chartInstance.scales[dataset.yAxisID]; } addFitter(datasetMeta, ctx, dataset, xScale, ySc); } });

Please make a pull request.