timeofday does not start at 0

[Domh4445]

Hello

IWith the following script, I would expect the hAxis starting at "0" but it starts at "1" ( see the picture attached)..

Any idea what's wrong ?

Thanks in advance


<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
    <script type="text/javascript">
      google.charts.load('current', {'packages':['line']});
      google.charts.setOnLoadCallback(drawChart);

    function drawChart() {

      var data = new google.visualization.DataTable();
      data.addColumn('timeofday', 'Heure');
      data.addColumn('number', 'Hier');
      data.addColumn('number', 'Aujourd hui');
      data.addColumn('number', 'Avant hier');

      data.addRows([
[[0, 0, 0],-13.8,  1.8,-11.8],
[[0 ,15, 0],  0.9,  1.8,  2.4],
[[0,30, 0],  5.4,  1.8,  5.7],
[[0, 45, 0],  1.7,  1.8, 10.5],
[[1, 0, 0], 11.9,  1.8, 10.4],
[[1, 15, 0],  8.8, 13.6,  7.7],
[[1, 30, 0],  7.6, 12.3,  9.6],
[[1, 45, 0], 12.3,  9.2, 10.6],
[[2, 0, 0], 16.9,  2.9, 14.8]
      ]);

      var options = {
        chart: {
          title: 'Temperature Chevry Ext',
          subtitle: 'mesure chaque quart d heure'
        },
       
        width: 900,
        height: 500,
        hAxis: {
          title: 'heures' , format: 'H m'                 
        }
      };

      var chart = new google.charts.Line(document.getElementById('line_top_x'));

      chart.draw(data, google.charts.Line.convertOptions(options));
    }
  </script>

[Daniel LaLiberte]

Could you try the 'upcoming' version rather than 'current'?  There are lots of changes regarding the display of axis ticks that might help in this case.

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Daniel LaLiberte

dlaliberte@Google.com   5CC, Cambridge MA

[Domh4445]

Hello

I get the same result with 'upcoming'

The only change I did is on that line:    google.charts.load('upcoming', {'packages':['line']});


Thanks



Le lundi 12 février 2018 17:56:16 UTC+1, Domh4445 a écrit :

Hello

[Domh4445]

more .....

with this it starts a "1"

[[0, 0, 0],-13.8,  1.8,-11.8],
[[0 ,15, 0],  0.9,  1.8,  2.4],
[[0,30, 0],  5.4,  1.8,  5.7],
[[0, 45, 0],  1.7,  1.8, 10.5],
[[1, 0, 0], 11.9,  1.8, 10.4],
[[1, 15, 0],  8.8, 13.6,  7.7],
[[1, 30, 0],  7.6, 12.3,  9.6],
[[1, 45, 0], 12.3,  9.2, 10.6],
[[2, 0, 0], 16.9,  2.9, 14.8]

but with this, it start at "9"
[[8, 0, 0],-13.8,  1.8,-11.8],
[[8 ,15, 0],  0.9,  1.8,  2.4],
[[8,30, 0],  5.4,  1.8,  5.7],
[[8, 45, 0],  1.7,  1.8, 10.5],
[[9, 0, 0], 11.9,  1.8, 10.4],
[[9, 15, 0],  8.8, 13.6,  7.7],
[[9, 30, 0],  7.6, 12.3,  9.6],
[[9, 45, 0], 12.3,  9.2, 10.6],
[[10, 0, 0], 16.9,  2.9, 14.8]

Le lundi 12 février 2018 17:56:16 UTC+1, Domh4445 a écrit :

[Daniel LaLiberte]

Could it be a timezone issue?  If so, that's pretty bad.

Could you try a few of the older versions?  41, 42, 43, and 44 are available.

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[Domh4445]

Hi Daniel

It is ok with 41 42 and 43. It is broken from 44

Thanks

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Daniel LaLiberte

dlali...@Google.com   5CC, Cambridge MA

[Daniel LaLiberte]

Good to know.  That should help narrow it down.

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[Gregg Somes]

Did you try starting it with [-1,0,0], ...

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[Domh4445]

Yes with  [-1,0,0], it starts at 0

...

Le lundi 12 février 2018 17:56:16 UTC+1, Domh4445 a écrit :

[Domh4445]

Hello

Do you know on which release, it will be fixed ?

Thanks

Le lundi 12 février 2018 17:56:16 UTC+1, Domh4445 a écrit :

[Daniel LaLiberte]

I didn't notice this before, but the problem is that the material chart (google.charts.Line) doesn't deal with the timeofday value properly.  The classic charts do behave properly, however, and I'm not sure how the recent versions broke timeofday for the material charts, but we may not bother fixing it.  I expect the plan going forward will be to fold the few new features provided by the material charts back into the classic charts.  There is a theme: 'material' option to make the classic charts have the fonts and colors of the material version.

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