General
PromptBeginner5 minmarkdownQuality: 24
cat(sprintf(Duplicate rows: %d\n
n_dup))
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Showing 24 of 133,293Categories: Data & Insights, Communication, Creative, Coding & Debugging, General
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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General
PromptBeginner5 minmarkdownQuality: 24
- panel function receives `(x
y
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General
PromptBeginner5 minmarkdownQuality: 24
- First argument can be an expression in x or a function: `curve(sin
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General
PromptBeginner5 minmarkdownQuality: 24
- Read-only parameters: cin
cra
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General
PromptBeginner5 minmarkdownQuality: 28
- mtext: line argument positions text in margin lines (0 = adjacent to plot
positive = outward). adj controls horizontal position (0-1).
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