luci-mod-status: fix NaN errors in realtime graphs

When I use Realtime Graphs I see following NaN errors:

    Error: <polyline> attribute points: Expected number, "0,298 0,NaN 5,NaN 10,NaN…".
    Error: <polyline> attribute points: Expected number, "0,298 0,NaN 5,NaN 10,NaN…".
    wireless.js?v=git-21.105.40538-2da37c2:19 Error: <polyline> attribute points: Expected number, "0,298 0,NaN 5,NaN 10,NaN…".
    eval @ wireless.js?v=git-21.105.40538-2da37c2:19
    Promise.then (async)
    eval @ wireless.js?v=git-21.105.40538-2da37c2:8
    step @ luci.js?v=git-21.105.40538-2da37c2:91
    start @ luci.js?v=git-21.105.40538-2da37c2:87
    add @ luci.js?v=git-21.105.40538-2da37c2:82
    pollData @ wireless.js?v=git-21.105.40538-2da37c2:7
    render @ wireless.js?v=git-21.105.40538-2da37c2:24
    Promise.then (async)
    __init__ @ luci.js?v=git-21.105.40538-2da37c2:148
    super @ luci.js?v=git-21.105.40538-2da37c2:22
    Anonymous42Class @ luci.js?v=git-21.105.40538-2da37c2:12
    (anonymous) @ luci.js?v=git-21.105.40538-2da37c2:181
    Promise.then (async)
    compileClass @ luci.js?v=git-21.105.40538-2da37c2:177
    Promise.then (async)
    require @ luci.js?v=git-21.105.40538-2da37c2:183
    instantiateView @ ui.js?v=git-21.105.40538-2da37c2:311
    (anonymous) @ wireless:47
    Promise.then (async)
    (anonymous) @ wireless:46

Signed-off-by: Lukasz Baj <l.baj@celerway.com>
[adjust subject]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

4 files changed, 8 insertions, 0 deletions

diff --git a/modules/luci-mod-status/htdocs/luci-static/resources/view/status/bandwidth.js b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/bandwidth.js
index cb7cf8c23d..0fbe49c12c 100644
--- a/modules/luci-mod-status/htdocs/luci-static/resources/view/status/bandwidth.js
+++ b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/bandwidth.js
@@ -209,6 +209,8 @@ return view.extend({
 							y = ctx.height - Math.floor(values[i][j] * data_scale);
 							//y -= Math.floor(y % (1 / data_scale));
 
+							y = isNaN(y) ? ctx.height : y;
+
 							pt += ' ' + x + ',' + y;
 						}
 
diff --git a/modules/luci-mod-status/htdocs/luci-static/resources/view/status/connections.js b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/connections.js
index a87fe53fed..168bfefdf8 100644
--- a/modules/luci-mod-status/htdocs/luci-static/resources/view/status/connections.js
+++ b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/connections.js
@@ -281,6 +281,8 @@ return view.extend({
 							y = ctx.height - Math.floor(values[i][j] * data_scale);
 							//y -= Math.floor(y % (1 / data_scale));
 
+							y = isNaN(y) ? ctx.height : y;
+
 							pt += ' ' + x + ',' + y;
 						}
 
diff --git a/modules/luci-mod-status/htdocs/luci-static/resources/view/status/load.js b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/load.js
index 2766f5d1b5..633e43e6c3 100644
--- a/modules/luci-mod-status/htdocs/luci-static/resources/view/status/load.js
+++ b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/load.js
@@ -186,6 +186,8 @@ return view.extend({
 							y = ctx.height - Math.floor(values[i][j] * data_scale);
 							//y -= Math.floor(y % (1 / data_scale));
 
+							y = isNaN(y) ? ctx.height : y;
+
 							pt += ' ' + x + ',' + y;
 						}
 
diff --git a/modules/luci-mod-status/htdocs/luci-static/resources/view/status/wireless.js b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/wireless.js
index 0fdd3d56e7..8848143c98 100644
--- a/modules/luci-mod-status/htdocs/luci-static/resources/view/status/wireless.js
+++ b/modules/luci-mod-status/htdocs/luci-static/resources/view/status/wireless.js
@@ -202,6 +202,8 @@ return view.extend({
 							y = ctx.height - Math.floor(values[i][j] * data_scale);
 							//y -= Math.floor(y % (1 / data_scale));
 
+							y = isNaN(y) ? ctx.height : y;
+
 							pt += ' ' + x + ',' + y;
 						}