choroplethr: calculate_percent_change – R documentation

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calculate_percent_change

Calculate the percentage change between two choroplethr dataframes.

Description

Merges df1 and df2 on column named "region", and computes percentage change from df1$value to df2$value. Result is in the new "value" column, and rounded to two digits.

Usage

calculate_percent_change(df1, df2)

Arguments

`df1`	A dataframe with columns named "region" and "value"
`df2`	A dataframe with columns named "region" and "value"

Examples

## Not run: 
# load median age estimates from 2010 and 2015
data(df_state_age_2010)
data(df_state_age_2015)

df_age_diff = calculate_percent_change(df_state_age_2010, df_state_age_2015)
state_choropleth(df_age_diff, 
    title      = "Percent Change in Median Age, 2010-2015", 
    legend     = "Percent Change", 
    num_colors = 0)

## End(Not run)

choroplethr

Simplify the Creation of Choropleth Maps in R

v3.7.0

BSD_3_clause + file LICENSE

Authors

Ari Lamstein [aut, cre], Brian Johnson [ctb], Trulia, Inc. [cph]

Initial release