class ec4py.Step_Datas()
– list class of Step data analysis and display.

Basic use
Initialization
Operators
Methods and properties

Basic use:

Import class:

   from ec4py import Step_Datas

Load data set:

   data = Step_Datas("List of PATH TO DATA")
   data = Step_Datas(["PATH1 TO DATA","PATH2 TO DATA",...])

Initialization

class ec4py.cv_data.CV_Data(Paths=None, args, kwargs)

   data = Step_Datas() # empty object
   data = Step_Datas(["PATHs"]) # import the data from a file.
   data = Step_Datas(["PATHs TO DATA FILE"], IRCORR="R") # import the data from a file and apply iR-correction.

Operators

Step_Datas does not support any operators.

Methods and properties

Step_Datas is a list class of Step_Datas, which inherit from EC_Setup and all properties and function are obtainable. The result are returned as a list.

Step_Datas.plot()

Creates a standard plot of a Step data(s), i.e. current vs time. Add arguments and keywords to easily modify the plot.

   sds = Step_Datas()
   sds.plot(RHE,AREA) # plot data vs RHE and normalize the current to geometric area.

Step_Datas.get_current_at_time(time_s_:float, dt_s_:float =0 ,*args, **kwargs)

A list of Quantity_Value_Unit representation of the curent at a specific time. Arguments can be used to normalize the current and shift the potential.

   sd = Steps_Datas()
   sd.get_current_at_time(0.1) # gets the current at 0.1V.

Step_Datas.get_voltage_at_time(i:float,tolerance:float=0, dir:str = “all”, *args, **kwargs)

A list of Quantity_Value_Unit representation of the voltage at a specific time.

Step_Datas.set_active_RE(new_reference_electrode=None)

Shifts the voltage to be relative another reference electrode. None related to the experimental reference electrode. See Arguments

   sds = Step_Datas()
   sds.set_active_RE(RHE)

Step_Datas.norm(norm_to)

Normalise the current to certain factors. See Arguments

   sds = Step_Datas()
   sds.norm(AREA) # the current is now normalized to area

Step_Datas.integrate(self, t_start:float,t_end:float, step_nr:int = -1, *args, **kwargs)

A list Quantity_Value_Unit representation of the integrated current between two time limits. Arguments can be used to normailze the current and shift the potential.

   sds = Step_Datas()
   sds.integrate(0.1,1.1) # integrate the current between 0.1 and 1.1 V.

Step_Datas.Tafel(self,*args, **kwargs)

A Quantity_Value_Unit representation of the Tafel slope, i.e. the fitting of a line to the data in a Tafel plot. Use the keyword: t and td or t_min and t_max to specify the time when to sample the voltage and current in the step. Use Emax and Emin to specify potential limits for the fit. Arguments can be used to normailze the current and shift the potential. Keywords:

t : float time at which to take the data point. defaults to “last”
dt : float time window to use for the average in seconds. defaults to 0 or
t_min : float minimum time to use for data selection. Use this instead of “t” and “dt”
t_max : float maximum time to use for data selection. Use this instead of “t” and “dt”
Emax:float maximum voltage to use for fitting. defaults to 1000
Emin:float minimum voltage to use for fitting. defaults to -1000
step_nr (int, optional):

class ec4py.Step_Datas() – list class of Step data analysis and display.