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2h
revised How to remove '.' from column names in a dataframe?
fix
2h
revised How to remove '.' from column names in a dataframe?
added 185 characters in body
2h
answered How to remove '.' from column names in a dataframe?
4h
revised R nls function and starting values
fix comment
4h
revised R nls function and starting values
show data
4h
answered R nls function and starting values
1d
revised How can I create sum of previous days but ignore the value at time t?
clarify
1d
answered How can I create sum of previous days but ignore the value at time t?
2d
revised dplyr: How to use group_by inside a function?
clarify
2d
revised Converting Movie Box Office to Numbers
typo
2d
revised Converting Movie Box Office to Numbers
formatting
2d
answered Converting Movie Box Office to Numbers
2d
revised Combine mutate with conditional values
%>%
2d
revised How do I convert column names into Time Series names in R?
added 540 characters in body
2d
answered How do I convert column names into Time Series names in R?
Apr
23
revised Inserting missing time observations in a dataframe
add variations
Apr
23
comment How can I improve the performance of nls in R?
Try a two step procedure in which you use a fraction of the data to get the first solution and then use that as the starting value for a second run with the entire dataset. If you find both solutions are close you may be able to just use the first step.
Apr
23
revised Inserting missing time observations in a dataframe
discuss wide form xtabs
Apr
23
revised Inserting missing time observations in a dataframe
clarify
Apr
23
revised Inserting missing time observations in a dataframe
add xtabs solution
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