How to slice and dice your time series by looking at specific cycles.
Cycle selectors are a tool that allows only a subset of cycles to be visualized. This is important when analyzing cycling data, which can have thousands of cycles. Each cycle selector option has accompanying common use cases.
First N
Description: Selects only the first N cycles.
Example: First 5 selects only the first 5 cycles.
Common use cases:
- View the first 100 cycles of a 2000 cycle test.
- For protocols where an RPT or capacity check occurs before the cycling, this can be used to isolate the RPT or capacity check.
Last N
Description: Selects only the last N cycles.
Example: Last 10 selects only the last 10 cycles.
Common use cases:
- View the last 50 cycles of a 2000 cycle test to analyze the degradation.
- Isolate a procedure that only occurs at the end of the test.
Trim
Description: Selects all the cycles EXCEPT the first N and the last M.
Example: Trim first 3 and last 4 selects all cycles except the first 3 cycles and the last 4 cycles.
Common use cases:
- Remove anomalies that can occur at the first and last cycles. This is common with cell chemistries that can have side reactions from storage.
- Removes data artifacts such as tests starting or ending at depths of discharge that are less than 100%.
Range
Description: Selects all cycles in the range N to M.
Example: Range starting at 100 to 200 selects all cycles between 100 and 200.
Common use cases:
- View a subset of the cycles, such as when interesting behavior occurs.
Interval
Description: Selects X cycles of every Y, starting from N to M.
Example: Select 1 cycle of every 100, starting from 1 to 2000 selects the 100th, 200th, 300th, ... , 2000th cycle.
Common use cases:
- Isolates an RPT test that might occur every 50 or 100 cycles during a long cycling procedure.
- Shows a representative cycle to analyze how long term cycling affects a cell.
Single
Description: Selects the Nth cycle.
Example: Single 75 selects the 75th cycle.
Common use cases:
- View a single cycle.
Custom
Description: Allows custom selection of cycles. Use commas to specify single cycles and hyphens to specify ranges.
Example: 1,2,5,7,9-12,14 selects cycles 1,2,5,7,9,10,11,12,14.
Common use cases:
- Exact cycle numbers are known in the procedure to support a custom analysis.