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filter for complete cases in data.frame using dplyr (case-wise deletion)
...on one variable's missingness, use a conditional:
df %>% filter(!is.na(x1))
or
df %>% drop_na(x1)
Other answers indicate that of the solutions above na.omit is much slower but that has to be balanced against the fact that it returns row indices of the omitted rows in the na.action attrib...
Syntax behind sorted(key=lambda: …)
I don't quite understand the syntax behind the sorted() argument:
9 Answers
9
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Split (explode) pandas dataframe string entry to separate rows
I have a pandas dataframe in which one column of text strings contains comma-separated values. I want to split each CSV field and create a new row per entry (assume that CSV are clean and need only be split on ','). For example, a should become b :
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What is normalized UTF-8 all about?
...same result as comparing them under NFD.
NFD
NFD has the characters fully expanded out. This is the faster normalization form to calculate, but the results in more code points (i.e. uses more space).
If you just want to compare two strings that are not already normalized, this is the preferred norma...
Left align two graph edges (ggplot)
...t I want to display on top of each other. I used grid.arrange from gridExtra to stack them. The problem is I want the left edges of the graphs to align as well as the right edges regardless of axis labels. (the problem arises because the labels of one graph are short while the other is long).
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MSBuild doesn't copy references (DLL files) if using project dependencies in solution
...e found when I've encountered this problem in MsBuild and Visual Studio.
Explanation
For a sample scenario let's say we have project X, assembly A, and assembly B. Assembly A references assembly B, so project X includes a reference to both A and B. Also, project X includes code that references a...
Programmatically Lighten or Darken a hex color (or rgb, and blend colors)
...e is a function I was working on to programmatically lighten or darken a hex color by a specific amount. Just pass in a string like "3F6D2A" for the color ( col ) and a base10 integer ( amt ) for the amount to lighten or darken. To darken, pass in a negative number (i.e. -20 ).
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Background color of text in SVG
I want to color the background of svg text similar to background-color in css
11 Answers
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How to apply multiple styles in WPF
...ay the first one. The styles have different TargetTypes, so I can't just extend one with the other.
11 Answers
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Eclipse cannot load SWT libraries
...2 bit. I edit the command to:
ln -s /usr/lib/jni/libswt-* ~/.swt/lib/linux/x86/
And on Ubuntu 12.04 64 bit try:
ln -s /usr/lib/jni/libswt-* ~/.swt/lib/linux/x86_64/
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