From ae432010fe0f8979d3b24f5d059921171c17202f Mon Sep 17 00:00:00 2001
From: Matthias Wirth <matthias.wirth@gmail.com>
Date: Sun, 29 May 2022 14:16:06 +0200
Subject: [PATCH] add heatmap stuff to readme

---
 README-query.md | 14 ++++++++++++++
 html/early.js   |  2 +-
 html/script.js  |  2 ++
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/README-query.md b/README-query.md
index 5e588af..a248e4b 100644
--- a/README-query.md
+++ b/README-query.md
@@ -65,3 +65,17 @@ See the main readme for more exapmles on how to use the filters
 - desktop - force desktop view.
 - kiosk - force kiosk mode (tempTrails=true / hideButtons=true / userScale=2).
 - allTracks - enable tracks as if pressing T
+
+## heatmap / reaplay (only available with readsb --heatmap parameter)
+
+- replay - replay history of all planes
+- heatmap - show a heatmap for the last 24h by default (optional: supply the maximum number of dots drawn, default 32000)
+- heatDuration - how many hours to show in the heatmap
+- heatEnd - how many hours to shift the heatmap time window into the past
+- heatAlpha - 0.1 to 1.0 - how transparent the dots will be
+- heatRadius - dot size for heatmap
+- heatManualRedraw - only redraw dots when pressing r
+
+- realHeat - real heatmap instead of dots
+- heatBlur - parameter for realHeat
+- heatWeight - parameter for realHeat
diff --git a/html/early.js b/html/early.js
index 16d5ac6..39a85b9 100644
--- a/html/early.js
+++ b/html/early.js
@@ -234,7 +234,7 @@ function arraybufferRequest() {
     return xhrOverride;
 }
 
-if (usp.has('heatmap')) {
+if (usp.has('heatmap') || usp.has('realHeat')) {
 
     heatmap = {};
 
diff --git a/html/script.js b/html/script.js
index d8e1e3d..1e7f2a8 100644
--- a/html/script.js
+++ b/html/script.js
@@ -1923,6 +1923,8 @@ function initMap() {
     layers_group = createBaseLayers();
     layers = layers_group.getLayers();
 
+    //add_kml_overlay('https://developers.google.com/kml/documentation/KML_Samples.kml', 'samples', 0.8);
+
     siteCircleLayer = new ol.layer.Vector({
         name: 'siteCircles',
         type: 'overlay',