The Line Similarity tool is used to compare the lines in a line chart to a selected master line.

When comparing the lines in a line chart to a selected master line, two new columns are generated. The first is a similarity column, where the similarity to the master line is presented for each individual row (line). The second is a rank column, where the line most similar to the master line receives the rank 1. Correlation or Euclidean distance is used as the distance measure.

If "break on empty" is not active, empty values will be replaced using row (line) interpolation, similar to what is shown in the visualization. If "break on empty" is active, any rows (lines) containing empty values shall be excluded from the line similarity calculation.