# Radial Plots with Plotly

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How to make a radial plot without using radial coordinates with plotly.

Let’s load a few libraries and pull some sample data. Then do some preparation by adding data associated with turning the graphic into a circle. A trivial application of high school SOHCATTOA, and finally plot. Comments included at each step.

# Loading --------------------------------- library(plotly) library(dplyr) # just because! source("https://git.io/vole5") # load data # Data Preperation ------------------------ df$theta <- seq(0,345,15) # 24 responses, equals 15 degrees per response df$o <- df$Proportion * sin(df$theta * pi / 180) # SOH df$a <- df$Proportion * cos(df$theta * pi / 180) # CAH df$o100 <- 1 * sin(df$theta * pi / 180) # Outer ring x df$a100 <- 1 * cos(df$theta * pi / 180) # Outer ring y df$a75 <- 0.75 * cos(df$theta * pi / 180) # 75% ring y df$o75 <- 0.75 * sin(df$theta * pi / 180) # 75% ring x df$o50 <- 0.5 * sin(df$theta * pi / 180) # 50% ring x df$a50 <- 0.5 * cos(df$theta * pi / 180) # 50% ring y # Plot ------------------------------------ p <- plot_ly() # Wire-frame lines from origin for(i in 1:24) { p <- add_trace( p, x = c(d$o100[i],0), y = c(d$a100[i],0), evaluate = TRUE, line = list(color = "#d3d3d3", dash = "3px"), showlegend = FALSE ) } p %>% # Add lines add_trace(data = d[c(1:48,1,25),], x = o, y = a, color = Year, mode = "lines+markers", hoverinfo = "text", text = paste(Year, Response,round(Proportion * 100), "%")) %>% # Add 100% circle add_trace(data = d, x = o100, y = a100, text = Response, hoverinfo = "none", textposition = "top middle", mode = "lines+text", line = list(color = "#d3d3d3", dash = "3px", shape = "spline"), showlegend = FALSE) %>% # Add 50% circle add_trace(data = d, x = o50, y = a50, mode = "lines", line = list(color = "#d3d3d3", dash = "3px", shape = "spline"), hoverinfo = "none", showlegend = FALSE) %>% # Add 75% circle add_trace(data = d, x = o75, y = a75, mode = "lines", line = list(color = "#d3d3d3", dash = "3px", shape = "spline"), hoverinfo = "none", showlegend = FALSE) %>% layout( autosize = FALSE, hovermode = "closest", autoscale = TRUE, width = 800, height = 800, xaxis = list(range = c(-1.25,1.25), showticklabels = FALSE, zeroline = FALSE, showgrid = FALSE), yaxis = list(range = c(-1.25,1.25), showticklabels = FALSE, zeroline = FALSE, showgrid = FALSE) )

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