Overview and Definition
A Time-series is any trend or count of data over time.
Each series tracks a specific measure at different points in time over time.
Mapping Indicators
For QS Rankings and indicators, HolonIQ time-series visualisation charts also use standard dimensions such as Benchmark Peers or Benchmark time Periods, to show for example rank in World University Ranking over time:
Sometimes the Benchmark Period (comparison time period) can be toggled and changed, but in other "set" charts, there is a defaulted period of time, such as the time-series charts of the Subject Grid report in Academic Reputation:
What do the Lines and Shaded Area Mean?
Many of our time-series charts have multiple lines which are indicative of different per year values, those being: maximum, minimum, top quartile, median and bottom quartile.
Here is what each line means:
The top line (red) is the maximum value per year.
The bottom (blue) line represents the minimum value in the given year.
The thick bolded line (yellow) represents the focus institution.
The purple represents the median, and
The shaded area, green, represents the top to bottom quartiles of values.
Bear in mind, the values are respective to your Benchmark Peer group selected. If you change the members of the Benchmark Peer group, e.g. Russell Group to all of UK, the charts will change to reflect this.
Note: if the indicator was introduced in the last year, only one value will be available, so only one dot will be visible in the chart.
