Comparing data

The CompareCompare-YT-Chart and TimeSeries-Bar-Chart can be used to compare data from different time ranges. Up to three time ranges can be added in the settings for this purpose. The first time range serves as a reference for the display.

The data is compared over a defined timespan (e.g. 3 hours, 1 week, ...) The length of the comparison period can be configured in the "Timeranges" area if Compare-YT-Chart or TimeSeries-Bar-Chart is selected as the chart type.

Comparing data 1:

In addition to the timespan, a comparison mode can be set. This can be used to set whether the data should simply be displayed on top of each other or whether they should be displayed synchronized with each other. This corresponds to a shift on the time axis in the diagram. The available comparison modes are:

Absolute

Comparing data 2:

In this mode, all selected time ranges are visualized one above the other. The absolute time is displayed on the X-axis. There is no shift on the time axis. The origin is always the start time of a timespan.

Relative

Comparing data 3:

In this mode, all selected time ranges are visualized one above the other. The relative elapsed time is shown on the X-axis. There is no shift on the time axis.

Match Start

Comparing data 4:

In this mode, the data is superimposed at the correct time. The start time of the first time range serves as a reference. The data for the other points in time are shifted so that the data at the beginning of the chart are aligned. The basis for this is the selected comparison period (see table).

Match End

Comparing data 5:

In this mode, the data is superimposed at the correct time. The end time of the first time range serves as a reference. The data for the other points in time are shifted so that the data at the end of the chart overlap in time. The basis for this is the selected comparison period (see table).

Comparison period

Procedure

Second(s)

Comparison of the milliseconds of data. As soon as the same millisecond occurs, the data is superimposed.

Minute(s)

Comparison of the seconds of data. As soon as the same second occurs, the data is superimposed.

Hour(s)

Comparison of the minutes of the data. As soon as the same minute occurs, the data is superimposed.

Day(s)

Comparison of the hour of data. As soon as the same hour occurs, the data is superimposed.

Week(s)

Comparison of the weekday of the data. As soon as the same day of the week occurs, the data is superimposed.

Month(s)

Comparison of the day of the data. As soon as the same day (date) occurs, the data is superimposed.

One month always corresponds to 31 days.

Year(s)

Comparison of the month of data. As soon as the same month occurs, the data is superimposed.

Comparing data 6:

Shifting the data

As it is not guaranteed that the data is recorded at the same cycle time or that the data is scanned at the same sampling rate, it is possible that the values do not always overlap exactly.