Computational Concept Map

plot()

generic plotting

qplot()

quick plotting

ggplot()

create plot and add layers

barplot()

creates barplots

abline()

adds a line to a plot

aes()

adds aesthetic to plot

geom_point()

used to create scatterplots

geom_boxplot

create boxplots

geom_smooth()

helps see patterns

labs()

creates plot labels

ggtitle()

adds a title to a plot

heatmap()

creates a heatmap

group_by()

turns existing table into a grouped table

select()

select columns and specify order and what's included

arrange()

reorder or order rows by a specific column

pivot_longer()

increase rows and decrease columns

mutate()

create new columns and add them

summarize()

see a summary of data in a specific column

rbind()

combine by columns or rows

cbind()

combine columns or rows

Sapply()

same as lapply but returns a vector or matrix

tapply()

applies other functions across groups

vapply()

Similar to sapply but allows argument for specific returns

lapply()

return list of same length as original input

as_tibble()

transforms object into a tibble

rep()

replicates values

filter()

subset and filter rows

fivenum()

returns minimum, lower-hinge, median, upper-hinge, maximum

median()

sample median

mean()

gives mean

length()

shows length of vectors

cor.test()

tests for corellation

t.test()

one and two sample t-tests

Arithmetic

sample()

generate random number

abs()

absolute value function

sqrt()

sqaure root function

%/%

Divide first vector from second quotient

%%

Remainder

^

Rasie to an exponent

*

multiply

-

subtract

+

adds

/

divide

Relational

>

Shows greater than

<

Shows less than

==

Shows if elements are equal

<=

Shows less than or equal

>=

Shows greater than or equal

!=

Shows if something is unequal

Logical

&

Says true if elements are both true

!

Opposite logical value

|

Gives true if one element is true

&&

Says true if both elements are true

||

Gives true if one element is true

Assignment

Assign Values

Left Assignment

<−

<<−

=

Right Assignment

->

->>

Miscellaneous

%in%

Shows if element is in a vector

:

Series of numbers

%*%

Multiply matrix with transpose

library()

load and add packages

unique()

shows unique elements

dim()

shows dimensions

head()

view first or last parts of something

data.frame()

colnames()

set row or column names

creates a data frame

Subtopic

seq()

creates sequences

table()

creates a table

**x**

Bold

*x*

Italicize

###

##

#

Title sizes

*x

Bullet point

*x

+y

Nested List

> x

Block quote