Upload depth_interactive_map_alpha.R

depth_interactive_map_alpha.R

@@ -77,12 +77,19 @@ BAR_RAMP <- rev(c(
   "#A8482F", "#8C3320", "#6E2418", "#511811", "#321008", "#3D0F0F"
 ))
 
-# Palettes — recalibrated (no neon; uniform lightness steps in oklch)
-CRIME_STEP_PAL <- c("#E8D2CB","#CFAEAE", "#B38B97", "#936A85",
-                    "#6E4F6E", "#4B3654", "#2A1F3B")
-DESAP_PAL  <- c("#FFFFFF00", "#FAEBED", "#F1CDD3", "#E8A6B3", "#D8688F", "#B53868", "#7B1843")
-PAM_PAL    <- c("#EDF4F1","#C7D9D2","#9ABFB3","#6EA595","#4F8B7A","#3B6F63","#2A524A")
-ENVIPE_PAL <- c("#fff7ed", "#F5D5B5", "#E8A87C", "#D87B4B", "#A8542A", "#5C2A12")
+# Palettes -- ColorBrewer multi-hue sequential ramps. Each layer keeps its
+# semantic hue family but adds a second hue (and steeper chroma) at the dark
+# end so the highest-percentile bin actually pops. All ramps are perceptually
+# monotonic in lightness (light -> dark) so the binning order stays legible
+# to colour-blind users.
+CRIME_STEP_PAL <- c("#f7fcfd", "#e0ecf4", "#bfd3e6", "#9ebcda",
+                    "#8c96c6", "#8856a7", "#810f7c")              # BuPu 7
+DESAP_PAL  <- c("#FFFFFF00", "#f1eef6", "#d4b9da", "#c994c7",
+                "#df65b0", "#dd1c77", "#980043")                  # PuRd 6 + transparent
+PAM_PAL    <- c("#ffffd9", "#edf8b1", "#c7e9b4", "#7fcdbb",
+                "#41b6c4", "#1d91c0", "#225ea8")                  # YlGnBu 7
+ENVIPE_PAL <- c("#fef0d9", "#fdcc8a", "#fc8d59", "#e34a33",
+                "#b30000", "#7f0000")                             # OrRd 6
 
 GIIM_COLORS <- c(
   "Nulo"      = "#f8fafc",
@@ -94,12 +101,18 @@ GIIM_COLORS <- c(
   "No aplica" = "#94a3b8"
 )
 
-MIGRANTS_PAL <- c("#FAF6E1", "#F0E5B5", "#E5D080", "#D6B852", "#B89307", "#8C6F00")
-GRAVES_PAL   <- c("#F8E6E6", "#EAB8B8", "#D88B8B", "#C46161", "#9E3030", "#5C0E0E")
-INFRA_PAL    <- c("#EAF6EE", "#BCDDC6", "#7AB89A", "#4E9777", "#27704E", "#0E3A28")
-OCVED_PAL    <- c("#F5ECDD", "#E2C99E", "#C7A063", "#9E7A38", "#705220", "#3F2D10")
-GED_PAL      <- c("#E5EDF5", "#BCD0E3", "#7AA1C5", "#4F7CA8", "#2F548A", "#1B3A66")
-FOSAS_PAL    <- c("#F5E8DC", "#E2C0A2", "#C18A65", "#945C3C", "#5E331F", "#3B1410")
+MIGRANTS_PAL <- c("#ffffb2", "#fecc5c", "#fd8d3c",
+                  "#f03b20", "#bd0026", "#800026")                # YlOrRd 6
+GRAVES_PAL   <- c("#fee5d9", "#fcae91", "#fb6a4a",
+                  "#de2d26", "#a50f15", "#67000d")                # Reds 6
+INFRA_PAL    <- c("#ffffe5", "#f7fcb9", "#d9f0a3",
+                  "#addd8e", "#78c679", "#238443")                # YlGn 6
+OCVED_PAL    <- c("#feedde", "#fdbe85", "#fd8d3c",
+                  "#e6550d", "#a63603", "#7f2704")                # Oranges 6
+GED_PAL      <- c("#f1eef6", "#d0d1e6", "#a6bddb",
+                  "#67a9cf", "#2b8cbe", "#045a8d")                # PuBu 6
+FOSAS_PAL    <- c("#ffffd4", "#fee391", "#fec44f",
+                  "#fe9929", "#d95f0e", "#993404")                # YlOrBr 6
 
 # Infrastructure point categories -- grouped from the raw "category" field
 # (Shelter / restaurant / Government / lodging / Legal/NGO / Food / charity /
@@ -2681,6 +2694,18 @@ server <- function(input, output, session) {
     list("interpolate", list("linear"), list("zoom"), from_zoom, 0, to_zoom, 1)
   }
 
+  # Maplibre interpolate expression for circle_radius. At national zoom the
+  # radius is ~0.7x base (dots stay small so the map isn't drowned in points);
+  # at street zoom it grows to ~3.2x base so individual incidents are legible.
+  zoom_radius_expr <- function(base = 2) {
+    list("interpolate", list("linear"), list("zoom"),
+         4,  max(1, base * 0.7),
+         7,  base,
+         10, base * 1.6,
+         13, base * 2.4,
+         16, base * 3.2)
+  }
+
   # N7 is lazy-loaded on first selection (113k rows would block renderMaplibre).
   grid7_sf     <- NULL
   grid7_loaded <- reactiveVal(FALSE)
@@ -2801,7 +2826,7 @@ server <- function(input, output, session) {
         show_measurements = TRUE
       ) 
 
-    # --- Satellite imagery (fades in at zoom > 14) ----------------------------
+    # --- Satellite imagery (fades in at zoom > 13) ----------------------------
     m <- m |>
       add_raster_source(
         id      = "satellite-source",
@@ -2938,7 +2963,7 @@ server <- function(input, output, session) {
         id                  = id,
         source              = pts,
         circle_color        = color,
-        circle_radius       = radius,
+        circle_radius       = zoom_radius_expr(radius),
         circle_opacity      = 0.75,
         circle_stroke_color = "rgba(0,0,0,0.4)",
         circle_stroke_width = 0.7,
@@ -2993,7 +3018,7 @@ server <- function(input, output, session) {
       maplibre_proxy("map") |>
         add_circle_layer(
           id = id, source = pts,
-          circle_color = color, circle_radius = radius,
+          circle_color = color, circle_radius = zoom_radius_expr(radius),
           circle_opacity = 0.75,
           circle_stroke_color = "rgba(0,0,0,0.4)",
           circle_stroke_width = 0.7,
@@ -3013,7 +3038,7 @@ server <- function(input, output, session) {
           id           = "infra-pts",
           source       = pts,
           circle_color = infra_cat_expr(),
-          circle_radius = 3,
+          circle_radius = zoom_radius_expr(3),
           circle_opacity = 0.85,
           circle_stroke_color = "rgba(0,0,0,0.5)",
           circle_stroke_width = 0.8,