Fix crash (projecthorus#38)

LukePrior · web-flow · commit 9f5e5b4cf6ae · 2022-06-26T14:17:20.000+10:00
diff --git a/js/tracker.js b/js/tracker.js
@@ -2596,13 +2596,13 @@ function addPosition(position) {
                 var dtt = (curr_ts - search_match) / 1000;
                 
                 // calculate vertical rate
-                var rate = (position.gps_alt - vehicle.positions_alts[search_matches.length]) / dtt;
+                var rate = (position.gps_alt - vehicle.positions_alts[search_matches.length-1]) / dtt;
                 if (!isNaN(rate) && isFinite(rate)) {
                     vehicle.ascent_rate = 0.5 * rate + 0.5 * vehicle.ascent_rate;
                 }
 
                 // calculate horizontal rate
-                horizontal_rate_temp = new_latlng.distanceTo(vehicle.positions[search_matches.length]) / dtt;
+                horizontal_rate_temp = new_latlng.distanceTo(vehicle.positions[search_matches.length-1]) / dtt;
                 if (!isNaN(horizontal_rate_temp) && isFinite(horizontal_rate_temp)) {
                     vehicle.horizontal_rate = horizontal_rate_temp;
                 }

Original file line number	Diff line number	Diff line change
`@@ -2596,13 +2596,13 @@ function addPosition(position) {`
`2596`	`2596`	`var dtt = (curr_ts - search_match) / 1000;`
`2597`	`2597`
`2598`	`2598`	`// calculate vertical rate`
`2599`		`- var rate = (position.gps_alt - vehicle.positions_alts[search_matches.length]) / dtt;`
	`2599`	`+ var rate = (position.gps_alt - vehicle.positions_alts[search_matches.length-1]) / dtt;`
`2600`	`2600`	`if (!isNaN(rate) && isFinite(rate)) {`
`2601`	`2601`	`vehicle.ascent_rate = 0.5 * rate + 0.5 * vehicle.ascent_rate;`
`2602`	`2602`	`}`
`2603`	`2603`
`2604`	`2604`	`// calculate horizontal rate`
`2605`		`- horizontal_rate_temp = new_latlng.distanceTo(vehicle.positions[search_matches.length]) / dtt;`
	`2605`	`+ horizontal_rate_temp = new_latlng.distanceTo(vehicle.positions[search_matches.length-1]) / dtt;`
`2606`	`2606`	`if (!isNaN(horizontal_rate_temp) && isFinite(horizontal_rate_temp)) {`
`2607`	`2607`	`vehicle.horizontal_rate = horizontal_rate_temp;`
`2608`	`2608`	`}`