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# An improvement on https://www.r-bloggers.com/ternary-plots-in-r-using-plotly/
library(plotly)
# acquire data
ds <- jsonlite::fromJSON(
"https://gist.githubusercontent.com/davenquinn/988167471993bc2ece29/raw/f38d9cb3dd86e315e237fde5d65e185c39c931c2/data.json"
)
df <- dplyr::bind_rows(ds, .id = "id")
# reusable function for creating annotation object
label <- function(txt) {
list(
text = txt,
x = 0.1, y = 1,
ax = 0, ay = 0,
xref = "paper", yref = "paper",
align = "center",
font = list(family = "serif", size = 15, color = "white"),
bgcolor = "#b3b3b3", bordercolor = "black", borderwidth = 2
)
}
# reusable function for axis formatting
axis <- function(txt) {
list(
title = txt, tickformat = ".0%", tickfont = list(size = 10)
)
}
ternaryAxes <- list(
aaxis = axis("Clay"),
baxis = axis("Sand"),
caxis = axis("Silt")
)
plot_ly(
df, a = ~clay, b = ~sand, c = ~silt, color = I("black"), type = "scatterternary"
) %>%
layout(
annotations = label("Ternary Markers"), ternary = ternaryAxes
)
plot_ly(
df, a = ~clay, b = ~sand, c = ~silt, color = I("black"), type = "scatterternary",
split = ~id, mode = "lines"
) %>%
layout(
annotations = label("Ternary Lines"), ternary = ternaryAxes
)
plot_ly(
df, a = ~clay, b = ~sand, c = ~silt, color = ~id, type = "scatterternary",
fill = "toself", mode = "lines"
) %>%
layout(
annotations = label("Ternary Contour"), ternary = ternaryAxes
)
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