ifelse and NA problem in R
If your data frame contains NA values, then the R function ifelse might return results you don’t desire. Missing values might be a…
Replace R data frame column values conditionally
Here are multiple examples of how to replace R data frame values conditionally. Sometimes it is a specific value like NA, but sometimes…
Check if a column has a missing values (NA) in R
Here are easy ways how to check if an R data frame column has missing values (NA). It might impact results by using…
Add week numbers to Outlook calendar
Sometimes it might be very to quickly understand what is the week numbers in the Outlook calendar. If the week number mentioned in…
How to copy Excel chart format
Here is a time-saving tip on how to copy an Excel chart format. It is not so easy as Format Painter that can…
Grouped and ungrouped PivotTable column problem in Excel file
If you are using multiple PivotTables from the same data source, then there might be a problem (ungrouped PivotTable problem). The same column…
Calculate weighted AVERAGE in Excel
If you are looking for a weighted AVERAGE in Excel, I think you already know why. Here is an example of how to…
Last or first date of the month in R
Here is probably the easiest way how to get the last or first date of the month that might be helpful in further…
Remove or replace unwanted characters in R
In a messy text might be a lot of characters that you don’t want to export to CSV or text files. That might…
