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Confusion between factor levels and factor labels
There seems to be a difference between levels and labels of a factor in R.
Up to now, I always thought that levels were the 'real' name of factor levels, and labels were the names used for output (such as tables and plots). Obviously, this is not the case, as the following example shows:
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Add legend to ggplot2 line plot
...plot three lines in the same graph and want to add a legend with the three colors used. This is the code used
3 Answers
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How do you 'redo' changes after 'undo' with Emacs?
This article says that "Emacs has redo because you can reverse direction while undoing, thereby undoing the undo".
9 Answe...
Find the max of two or more columns with pandas
I have a dataframe with columns A , B . I need to create a column C such that for every record / row:
2 Answers
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Creating C macro with ## and __LINE__ (token concatenation with positioning macro)
I want to create a C macro that creates a function with a name based
on the line number.
I thought I could do something like (the real function would have statements within the braces):
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How to get a reference to current module's attributes in Python
What I'm trying to do would look like this in the command line:
3 Answers
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Creating a new column based on if-elif-else condition
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SQLite - replace part of a string
Is it possible using SQL in an SQLite table to replace part of a string?
3 Answers
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Executing a command stored in a variable from PowerShell
I have a command that I have build and stored in a variable in PowerShell. This command works if I do a Write-Host and copy and paste into a standard cmd.exe window.
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