Fix API version and polish tx graph

Author: gotthardp

priv/admin/admin.js

@@ -1007,7 +1007,7 @@ return {
             $scope.txChartObject.options = {
                 "vAxes": {
                     0: {"title": 'Tx Time [ms]', "minValue": 0, "maxValue": 5000},
-                    1: {"title": 'Tx in Hour [ms]', "minValue": 0, "maxValue": 36000}
+                    1: {"title": 'Tx in Hour [ms]', "minValue": 0, "maxValue": 1}
                 },
                 "series": {
                     0: {"targetAxisIndex": 0},

rebar.config

@@ -12,7 +12,7 @@
 ]}.
 
 {deps, [
-    {lorawan_server_api, {git, "https://github.com/gotthardp/lorawan-server-api.git", {branch, "master"}}},
+    {lorawan_server_api, {git, "https://github.com/gotthardp/lorawan-server-api.git", {tag, "v0.4.8"}}},
     {lager, {git, "https://github.com/basho/lager.git", {tag, "3.2.4"}}},
     {syn, {git, "https://github.com/ostinelli/syn.git", {tag, "1.6.1"}}},
     {worker_pool, {git, "https://github.com/inaka/worker_pool.git", {tag, "3.0.0"}}},

src/lorawan_admin_gwgraph.erl

@@ -77,8 +77,9 @@ get_gateway(Req, #state{format=tgraph}=State) ->
                 fun ({Date, {_, Duration, Sum}}) ->
                     {true,  [{c, [
                                 [{v, encode_timestamp(Date)}],
-                                [{v, Duration}],
-                                [{v, Sum}]
+                                [{v, round(Duration)}],
+                                [{v, Sum/36000}, {f, <<(integer_to_binary(round(Sum)))/binary,
+                                    " (", (float_to_binary(Sum/36000, [{decimals, 3}, compact]))/binary, "%)">>}]
                             ]}]};
                 (_Else) ->
                     false