General
PromptBeginner5 minmarkdownQuality: 24
df$gender <- ifelse(df$gender == 1
Male
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125,390 skills indexed with the new KISS metadata standard.
Showing 24 of 125,390Categories: Research & Learning, General, Coding & Debugging
General
PromptBeginner5 minmarkdownQuality: 24
df$date <- as.Date(df$date
format = %Y-%m-%d)
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General
PromptBeginner5 minmarkdownQuality: 24
cat(sprintf(\n%s (%d unique):\n
col
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General
PromptBeginner5 minmarkdownQuality: 24
print(table(df[[col]]
useNA = ifany))
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General
PromptBeginner5 minmarkdownQuality: 24
cat(sprintf(Duplicate rows: %d\n
n_dup))
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General
PromptBeginner5 minmarkdownQuality: 24
cat_cols <- names(df)[sapply(df
function(x) is.character(x) | is.factor(x))]
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General
PromptBeginner5 minmarkdownQuality: 24
print(nareport[nareport$n_miss > 0
])
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General
PromptBeginner5 minmarkdownQuality: 24
head(df
10)
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General
PromptBeginner5 minmarkdownQuality: 24
pct_miss = round(colMeans(is.na(df)) * 100
1)
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General
PromptBeginner5 minmarkdownQuality: 24
library(lmtest) # Breusch-Pagan
Durbin-Watson etc.
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General
PromptBeginner5 minmarkdownQuality: 24
library(car) # Type II/III ANOVA
VIF
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General
PromptBeginner5 minmarkdownQuality: 24
Copy this file
rename it
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General
PromptBeginner5 minmarkdownQuality: 24
- `adjustcolor(col
alpha.f = 0.5)`: easy way to add transparency.
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General
PromptBeginner5 minmarkdownQuality: 24
- colorRamp returns a function mapping [0
1] to RGB matrix.
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General
PromptBeginner5 minmarkdownQuality: 24
- `hcl(h
c
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General
PromptBeginner5 minmarkdownQuality: 24
- `dev.copy(pdf
file = plot.pdf) followed by dev.off()` to save current plot.
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General
PromptBeginner5 minmarkdownQuality: 24
- `rgb(r
g
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General
PromptBeginner5 minmarkdownQuality: 24
- Must call dev.off() to finalize the file. Without it
file may be empty/corrupt.
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General
PromptBeginner5 minmarkdownQuality: 24
- `rect(xleft
ybottom
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Coding & Debugging
PromptBeginner5 minmarkdownQuality: 24
- arrows: code = 1 (head at start)
code = 2 (head at end
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General
PromptBeginner5 minmarkdownQuality: 24
- `persp(x
y
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General
PromptBeginner5 minmarkdownQuality: 24
- `contour(x
y
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General
PromptBeginner5 minmarkdownQuality: 24
- For image
x and y specify cell boundaries or midpoints depending on context.
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General
PromptBeginner5 minmarkdownQuality: 24
- Plots columns of one matrix against columns of another. Recycles col
lty
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