impute_errors           Function working as testbench for comparison of
                        imputing models
mae                     Mean Absolute Error Calculation
mape                    Mean Absolute Percent Error Calculation
plot_errors             Function to plot the Error Comparison
plot_impute             Plot imputations
print.errprof           Print method for errprof
rmse                    Root Mean Square Error Calculation
sample_dat              Sample time series data
