Fix conversion to wide data frame, fixes #1309
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@@ -316,7 +316,8 @@ export function alignFrames(data: MutableDataFrame[]): MutableDataFrame[] {
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}
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export function convertToWide(data: MutableDataFrame[]): DataFrame[] {
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const timeField = data[0].fields.find(f => f.type === FieldType.time);
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const maxLengthIndex = getLongestFrame(data);
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const timeField = data[maxLengthIndex].fields.find(f => f.type === FieldType.time);
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if (!timeField) {
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return [];
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}
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@@ -347,6 +348,20 @@ export function convertToWide(data: MutableDataFrame[]): DataFrame[] {
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return [frame];
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}
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function getLongestFrame(data: MutableDataFrame[]): number {
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let maxLengthIndex = 0;
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let maxLength = 0;
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for (let i = 0; i < data.length; i++) {
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const timeField = data[i].fields.find(f => f.type === FieldType.time);
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if (timeField.values.length > maxLength) {
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maxLength = timeField.values.length;
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maxLengthIndex = i;
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}
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}
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return maxLengthIndex;
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}
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function sortTimeseries(timeseries) {
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// Sort trend data, issue #202
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_.forEach(timeseries, series => {
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