Choropleth world map - convert k thousand numbers - r

Question

When hovering over a country the numbers are shown as say 125.115k - I want to show it as 125,115
I tried using library(formattable) and something along the lines of z = comma(worldmap$Deaths,digits = 1)
My code is below
output$World_Map <- renderPlotly({
g <- list(
showframe = FALSE,
showcoastlines = FALSE,
projection = list(type = 'Mercator')
)
plot_ly(
worldmap,
type = 'choropleth',
locations = worldmap$COUNTRY_ALPHA_3_CODE,
z = worldmap$Deaths,
text = paste("Number of Deaths: ",worldmap$COUNTRY_SHORT_NAME,"\n",comma(worldmap$Cases, digits = 0),"\n","Number of Cases: ",worldmap$COUNTRY_SHORT_NAME),
colorscale = "Reds"
) %>% layout(title = "<b>Covid19 Global Pandemic .... Data Source: <a href='https://coronavirus.jhu.edu/'>Johns Hopkins University of Medicine</a><b>", geo = g)
})

Answer 1

For comma rendering numbers, I use prettyNum from base R, also comma function is available in scales package.
number_a <- 123456
prettyNum(number_a, big.mark = ",")
[1] "123,456"
Your question is about text tooltip in Plotly. You can do something like this, with hoverinfo/hovertemplate and text parameters.
Of course there are other manners to do it.
Because I don't have your data, I use an example from plotly website.
library(plotly)
# code for example
# https://plotly.com/r/choropleth-maps/#using-builtin-country-and-state-geometries
# doc for hovertemplate
# https://plotly-r.com/controlling-tooltips.html#tooltip-text
df <- read.csv('https://raw.githubusercontent.com/plotly/datasets/master/2014_world_gdp_with_codes.csv')
# light grey boundaries
l <- list(color = toRGB("grey"), width = 0.5)
# specify map projection/options
g <- list(
showframe = FALSE,
showcoastlines = FALSE,
projection = list(type = 'Mercator')
)
fig <- plot_geo(df)
fig <- fig %>% add_trace(
z = ~GDP..BILLIONS., color = ~GDP..BILLIONS., colors = 'Blues',
locations = ~CODE, marker = list(line = l),
hoverinfo = "text",
text = ~glue::glue("{COUNTRY} <b>{CODE}</b>"),
hovertemplate = "%{z:,0f}<extra>%{text}</extra>"
)
fig <- fig %>% colorbar(title = 'GDP Billions US$', tickformat = ",0f")
fig <- fig %>% layout(
title = '2014 Global GDP<br>Source:CIA World Factbook',
geo = g
)
fig
With this you can easily configure your hover info / tooltip.
See here for more examples :
https://plotly.com/r/choropleth-maps/#customize-choropleth-chart
For French number (space instead of comma), you can at the end config locale:
fig %>%
config(locale = 'fr')