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flowmapper_debug_tests.R
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flowmapper_debug_tests.R
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#################################################################################
############ HELPERS ##########################################################
############################################################################
# Links
getlinks <- function(x, df, xid, dfid, dfvar){
dots <- sf::st_centroid(x = sf::st_geometry(x),of_largest_polygon = max(sf::st_is(sf::st_as_sf(x), "MULTIPOLYGON")))
x2 <- data.frame(id = x[[xid]],
sf::st_coordinates(sf::st_centroid(x = sf::st_geometry(x),
of_largest_polygon = max(sf::st_is(sf::st_as_sf(x), "MULTIPOLYGON")))))
df <- df[, c(dfid,dfvar)]
colnames(df) <- c("i","j","fij")
df <- df[!df$i == df$j,]
link <- merge(df, x2, by.x = dfid[2], by.y = "id", all.x = TRUE)
link <- merge(link, x2, by.x = dfid[1], by.y = "id", all.x = TRUE)
names(link)[4:7] <- c("xj", "yj", "xi", "yi")
link <- link[link$i != link$j,]
link$ang <- atan2(link$yj - link$yi, link$xj - link$xi) * 180 / pi
link$dist <- sqrt ((link$xj - link$xi) ^ 2 + (link$yj - link$yi) ^ 2)
stringo <- paste0("LINESTRING(", link$xi, " ", link$yi, ", ",link$xj, " ", link$yj, ")")
link <- sf::st_sf(link, geometry = sf::st_as_sfc(stringo, crs = sf::st_crs(x)))
link <- link[,c(1:3,8:10)]
ctr <- st_coordinates(st_centroid(st_geometry(link)))
link$ctrx <- ctr[,1]
link$ctry <- ctr[,2]
link <- link[,c("i","j","fij","ang","dist","ctrx","ctry","geometry")]
return(link)
}
# Rotate
rotate <- function(x){
ctr = st_as_sf(x[,c("ctrx","ctry")] %>% st_drop_geometry(), coords = c("ctrx", "ctry"), crs = st_crs(x))
rot <- function(a) matrix(c(cos(a), sin(a), -sin(a), cos(a)), 2, 2)
n <- nrow(x)
for (i in 1:n){
st_geometry(x[i,]) <- ( st_geometry(x)[i] - st_geometry(ctr)[i]) * rot(x$ang[i] * pi/180) + st_geometry(ctr)[i]
}
return (x)
}
# Circles
getcircles <- function(x, xid, df, dfid, dfvar, k){
if (is.null(k)){
m <- max(df[,dfvar])
bb <- st_bbox(x)
k <- max(bb$xmax - bb$xmin, bb$ymax - bb$ymin)/ (m * 700)
}
dots <- sf::st_centroid(x = sf::st_geometry(x),of_largest_polygon = max(sf::st_is(sf::st_as_sf(x), "MULTIPOLYGON")))
dots <- st_sf(x[,xid] %>% st_drop_geometry(), dots)
dots <- merge(dots, df, by.x = xid, by.y = dfid)
dots[,"r"] <- dots[,dfvar] %>% st_drop_geometry() * k
circles <- st_buffer(dots, dots$nb * k)
circles <- circles[,c(xid,dfvar,"r","geometry")]
return(circles)
}
# Dots
getdots <- function(x, xid, k = NULL){
if (is.null(k)){
bb <- st_bbox(x)
k <- max(bb$xmax - bb$xmin, bb$ymax - bb$ymin)/300
}
dots <- sf::st_centroid(x = sf::st_geometry(x),of_largest_polygon = max(sf::st_is(sf::st_as_sf(x), "MULTIPOLYGON")))
dots <- st_sf(x[,xid] %>% st_drop_geometry(), geometry = dots)
dots[,"r"] <- k
circles <- st_buffer(dots, k)
circles = circles[,c("id","r","geometry")]
return(circles)
}
# Link to Flows
linktoflows <- function(link, size, k, dfvar, type, decreasing){
crs <- st_crs(link)
link$shift <- 0
link$ij <- paste0(link$i,"_",link$j)
link$ji <- paste0(link$j,"_",link$i)
nb <- nrow(link)
for(i in 1:nb) {
if(link$ij[i] %in% link$ji) {link$shift[i] <- 1}
}
bb <- st_bbox(link)
hmax <- max(bb$xmax - bb$xmin, bb$ymax - bb$ymin)/25
delta <- max(bb$xmax - bb$xmin, bb$ymax - bb$ymin) / 300
delta2 <- max(bb$xmax - bb$xmin, bb$ymax - bb$ymin) / 750
if(!"delta_i" %in% names(link)){
link$delta_i <- 0
link$delta_j <- 0
delta <- 0
}
if (size == "area"){
if(is.null(k)){ k <- hmax / max(link[[dfvar]] / link$dist)}
link$height <- link[[dfvar]] / link$dist * k
link$area <- link$height * link$dist
} else {
if(is.null(k)){ k <- hmax / max(link[[dfvar]])}
link$height <- link[[dfvar]] * k
}
link <- rotate(link)
l <- st_geometry(link)
d <- st_coordinates(l)
n <- nrow(d)
r <- data.frame(d[seq(1, n, 2),] ,d[seq(2, n, 2),] )
rownames(r) <- r$L1
r <- r[,c("X","Y","X.1","Y.1")]
colnames(r) <- c("x1","y1","x2","y2")
r$height <- link$height
if (type == "arrows"){
r$x1 <- r$x1 + link$delta_j + delta
r$x2 <- r$x2 - link$delta_i - delta
r$y1 <- r$y1 - (r[["height"]]/2 + delta2) * link$shift
r$y2 <- r$y2 - (r[["height"]]/2 + delta2) * link$shift
r$p1x <- r$x1
r$p1y <- r$y1 - r[["height"]]/2
r$p2x <- r$x2 - r[["height"]]/2
r$p2y <- r$y2 - r[["height"]]/2
r$p3x <- r$x2
r$p3y <- r$y2
r$p4x <- r$p2x
r$p4y <- r$y2 + r[["height"]]/2
r$p5x <- r$x1
r$p5y <- r$y1 + r[["height"]]/2
st_geometry(link) <- st_as_sfc(paste0("POLYGON((",r$p1x," ",r$p1y,", ",r$p2x," ",r$p2y,", ",r$p3x," ",r$p3y,", ",r$p4x," ",r$p4y,", ",r$p5x," ",r$p5y,", ",r$p1x," ",r$p1y,"))"))
}
if (type == "rect"){
r$p1x <- r$x1 + link$delta_j + delta
r$p2x <- r$x2 - link$delta_i - delta
r$p1y <- r$y1 - (r[["height"]]/2 + delta2) * link$shift
r$p2y <- r$y2 - (r[["height"]]/2 + delta2) * link$shift
r$p3x <- r$p2x
r$p3y <- r$p2y + r[["height"]]/2
r$p4x <- r$p1x
r$p4y <- r$p1y + r[["height"]]/2
r$p1y <- r$p1y - r[["height"]]/2
r$p2y <- r$p2y - r[["height"]]/2
st_geometry(link) <- st_as_sfc(paste0("POLYGON((",r$p1x," ",r$p1y,", ",r$p2x," ",r$p2y,", ",r$p3x," ",r$p3y,", ",r$p4x," ",r$p4y,", ",r$p1x," ",r$p1y,"))"))
}
link$ang <- - link$ang
link <- rotate(link)
link <- link[order(link$height, decreasing = decreasing),]
st_crs(link) <- crs
return(link)
}
#################################################################################
############ flowmapper ##########################################################
############################################################################
ttt_flowmapper <- function(
x,
xid = "id",
df,
dfid = c("i","j"),
dfvar = "fij",
size = "thickness",
type = "arrows",
decreasing = FALSE,
add = FALSE,
lwd = 1,
col = "#FF000099",
border = "#4a0c25",
k = NULL,
df2 = NULL,
df2id = "id",
df2var,
k2 = NULL,
col2 = "white",
border2 = "black",
lwd2 = 2,
plot = TRUE
){
# x = subregions
# xid = "id"
# df = migr
# dfid = c("i","j")
# dfvar = "fij"
# size = "thickness"
# type = "arrows"
# decreasing = FALSE
# add = FALSE
# lwd = 1
# col = "#FF000099"
# border = "#4a0c25"
# k = NULL
# df2 = NULL
# df2id = "id"
# df2var
# k2 = NULL
# col2 = "white"
# border2 = "black"
# lwd2 = 2
# plot = TRUE
#
links <- getlinks(x, df, xid, dfid, dfvar)
if(!is.null(df2)){
c <- getcircles(x = x, xid = xid, df = df2, dfid = df2id, dfvar = df2var, k = k2)
r <- c[,c(df2id,"r")] %>% st_drop_geometry()
} else {
c <- getdots(x = x, xid = xid, k = k2)
r <- c[,c(xid,"r")] %>% st_drop_geometry()
}
links <- merge(links,r, by.x = "j", by.y = "id", all.x = TRUE)
links <- merge(links,r, by.x = "i", by.y = "id", all.x = TRUE)
colnames(links) <- c("i", "j", "fij", "ang", "dist", "ctrx", "ctry", "delta_i", "delta_j", "geometry")
links$delta_i[is.na(links$delta_i)] <- 0
links$delta_j[is.na(links$delta_j)] <- 0
flows <- linktoflows(links, size, k = k, dfvar, type, decreasing)
if (plot == TRUE){
plot(st_geometry(flows), col = col, border = border, lwd = lwd, add = add)
plot(st_geometry(c), col = col2, border = border2, lwd = lwd2, add = TRUE)
}
output <- list("links" = links, "circles" = c, "flows" = flows)
return(output)
}
########################################################################################################################################
###### LEGEND #######################################################################################################################
##################################################################################################################################
ttt_flowmapperlegend <- function(x, pos = NULL, title = "Title 1", title2 = NULL) {
# Vars
col = "white"
border = "black"
lwd = 1
values.cex = 0.6
values.round = 0
lty = 3
nb.circles = 4
title.cex = 0.8
title.font = 2
# 1 - circles
# Radii & Values
v <- x[[2]]
st_geometry(v) <- NULL
v <- v[,2]
r <- sqrt(as.numeric(st_area(x[[2]]))/pi)
radii <- seq(from = max(r), to = min(r), length.out = nb.circles)
sle <- radii * radii * pi
values <- sle * max(v) / sle[1]
# Positions
delta <- (par()$usr[2] - par()$usr[1]) / 50
if(length(pos) != 2){
pos <- c(par()$usr[1] + radii[1] + delta,par()$usr[3] + delta)
}
# Circles
if (!is.null(title2)){
for(i in 1:nb.circles){
# circles
posx <- pos[1]
posy <- pos[2] + radii[i]
p <- st_sfc(st_point(c(posx,posy)))
circle <- st_buffer(st_as_sf(p), dist = radii[i])
plot(circle, col = col, border = border, lwd=lwd, add=T)
# lines
segments(posx, posy + radii[i], posx + radii[1] + radii[1]/10, col = border, lwd=lwd, lty = lty)
# texts
text(x = posx + radii[1] + radii[1]/5, y = posy + radii[i],
labels = formatC(round(values[i],values.round), big.mark = " ", format = "fg", digits = values.round), adj = c(0,0.5), cex = values.cex)
}
# Title
text(x = posx - radii[1] ,y = posy + radii[1]*2 + radii[1]/3, title2,
adj = c(0,0), cex = title.cex, font = title.font)
}
# flows (thickness)
if(is.null(x[[3]]$area)){
hmax <- max(x[[3]]$height)
hmin <- min(x[[3]]$height)
bb <- st_bbox(x[[3]])
width <- (bb$xmax - bb$xmin) / 15
deltax <- (bb$xmax - bb$xmin) / 10
rectmax <- st_as_sfc(paste0("POLYGON((",0," ",0,", ",width," ",0,", ",width," ",hmax,", ",0," ",hmax,", ",0," ",0,"))")) + pos + c(max(radii) + deltax,0)
rectmin <- st_as_sfc(paste0("POLYGON((",0," ",0,", ",width," ",0,", ",width," ",hmin,", ",0," ",hmin,", ",0," ",0,"))")) + pos + c(max(radii) + deltax,0)
segments(pos[1] + max(radii) + width + deltax, pos[2] + hmin, pos[1] + max(radii) + width + deltax + width/4, pos[2] + hmin, col = border, lwd=lwd, lty = lty)
segments(pos[1] + max(radii) + width + deltax, pos[2] + hmax, pos[1] + max(radii) + width + deltax + width/4, pos[2] + hmax, col = border, lwd=lwd, lty = lty)
plot(rectmax, add= TRUE)
plot(rectmin, add= TRUE)
vals <- flows[[2]][,2] %>% st_drop_geometry()
text(x = pos[1] + max(radii) + width + deltax + width/4 + width/8 , y = pos[2] + hmin,
labels = formatC(round(min(vals),values.round), big.mark = " ", format = "fg", digits = values.round), adj = c(0,0.5), cex = values.cex)
text(x = pos[1] + max(radii) + width + deltax + width/4 + width/8, y = pos[2] + hmax,
labels = formatC(round(max(vals),values.round), big.mark = " ", format = "fg", digits = values.round), adj = c(0,0.5), cex = values.cex)
text(x = pos[1] + max(radii) + width/2 + deltax, y = pos[2] + (hmax - hmin)/2,
labels = "(thickness)", adj = c(0.5,0), cex = 0.6)
# Title
text(x = pos[1] + max(radii) + deltax ,y = pos[2] + hmax + radii[1]/3, title,
adj = c(0,0), cex = title.cex, font = title.font)
}
# flows (area)
if(!is.null(x[[3]]$area)){
hmax <- sqrt(max(x[[3]]$area))
hmin <- sqrt(min(x[[3]]$area))
bb <- st_bbox(x[[3]])
width <- (bb$xmax - bb$xmin) / 15
deltax <- (bb$xmax - bb$xmin) / 10
rectmax <- st_as_sfc(paste0("POLYGON((",0," ",0,", ",hmax," ",0,", ",hmax," ",hmax,", ",0," ",hmax,", ",0," ",0,"))")) + pos + c(max(radii) + deltax,0)
rectmin <- st_as_sfc(paste0("POLYGON((",0," ",0,", ",hmin," ",0,", ",hmin," ",hmin,", ",0," ",hmin,", ",0," ",0,"))")) + pos + c(max(radii) + deltax + hmax - hmin,0)
segments(pos[1] + max(radii) + hmax + deltax, pos[2] + hmin, pos[1] + max(radii) + hmax + deltax + width/4, pos[2] + hmin, col = border, lwd=lwd, lty = lty)
segments(pos[1] + max(radii) + hmax + deltax, pos[2] + hmax, pos[1] + max(radii) + hmax + deltax + width/4, pos[2] + hmax, col = border, lwd=lwd, lty = lty)
plot(rectmax, add= TRUE)
plot(rectmin, add= TRUE)
vals <- flows[[2]][,2] %>% st_drop_geometry()
text(x = pos[1] + max(radii) + hmax + deltax + width/4 + width/8 , y = pos[2] + hmin,
labels = formatC(round(min(vals),values.round), big.mark = " ", format = "fg", digits = values.round), adj = c(0,0.5), cex = values.cex)
text(x = pos[1] + max(radii) + hmax + deltax + width/4 + width/8, y = pos[2] + hmax,
labels = formatC(round(max(vals),values.round), big.mark = " ", format = "fg", digits = values.round), adj = c(0,0.5), cex = values.cex)
text(x = pos[1] + max(radii) + hmax/2 + deltax, y = pos[2] + hmax/2,
labels = "(area)", adj = c(0.5,0), cex = 0.6)
# Title
text(x = pos[1] + max(radii) + deltax ,y = pos[2] + hmax + radii[1]/3, title,
adj = c(0,0), cex = title.cex, font = title.font)
}
}
########################################################################################################################################
########################################################################################################################################
########################################################################################################################################
library(sf)
library(mapsf)
##### DATA
crs <- "+proj=aeqd +lat_0=90 +lon_0=50 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs "
subregions <- st_read(system.file("subregions.gpkg", package="flowmapper")) %>% st_transform(crs)
migr <- read.csv("data/world/fij/migr2019_T.csv")
subregions <- st_read("data/world/geom/subregions.gpkg")
#migr <- read.csv(system.file("migrantstocks2019.csv", package="flowmapper"))
migr <- read.csv("data/world/fij/migr2019_T.csv")
subregions <- st_transform(x = subregions, crs = crs)
#threshold <- 1500
#migr <- migr[migr$fij >= threshold,]
mf_map(subregions, col = "#6b274f", border = "white")
flows <- ttt_flowmapper(
x = subregions,
xid = "id",
df = migr,
dfid = c("i","j"),
dfvar = "fij",
add = TRUE)
getlinks(x=subregions, df = migr, xid = "id", dfid = c("i","j"), dfvar = "fij")
ttt_flowmapperlegend(x = flows, title = "inter", title2 = "intra")