From 4ec10c01ed0951fd1fd427c6a1e636bf8776047b Mon Sep 17 00:00:00 2001
From: Daniel Richman <main@danielrichman.co.uk>
Date: Sat, 27 Apr 2013 08:44:25 +0100
Subject: [PATCH] Fix longitude range issues in CSV

---
 pred_src/pred.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pred_src/pred.c b/pred_src/pred.c
index 0633b1d..1089a1d 100644
--- a/pred_src/pred.c
+++ b/pred_src/pred.c
@@ -315,6 +315,10 @@ int main(int argc, const char *argv[]) {
 }
 
 void write_position(float lat, float lng, float alt, int timestamp) {
+    // the predictor uses 0<=lng<360; most other things expect -180<lng<=180
+    if (lng > 180)
+        lng -= 360;
+
     if (kml_file) {
         fprintf(kml_file, "%g,%g,%g\n", lng, lat, alt);
         if (ferror(kml_file)) {