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    Success! Looks like we've fixed this one. According to our records the fix was applied for EXTJS-4757 in a recent build.
  1. #1
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    Default Setting a chart time axis to have a grid can cause errors with certain step/start val

    Setting a chart time axis to have a grid can cause errors with certain step/start val


    REQUIRED INFORMATION


    Ext version tested:
    • Ext 4.0.7
    • Ext 4.1-pr1
    Description:
    • Setting a chart time axis to have a grid can cause errors with certain step/start values.
    Steps to reproduce the problem:
    • 4.0.7: src/draw/Draw.js Line 1080:
    Code:
    case Ext.Date.DAY:
    testFrom = new Date(fromStat[0], fromStat[1],
    Math.floor(fromStat[2] - 1 / step[1]) * step[1] + 1, 0, 0, 0, 0);
    break;
    Input:
    Code:
    var fromStat = [2011, 10, 23, 0, 0, 0, 0]; // Wed Nov 23 2011 01:00:00 GMT+0100 (CET)
    var step = [Ext.Date.DAY, 10]; // put grid marker/line every 10 days
    Problematic part:
    Code:
    Math.floor(fromStat[2] - 1 / step[1]) * step[1]+1; // 23 - 1 / 10 = 22.9 -> floor = 22 -> 22 * 10 + 1 = 221
    Possible fix:

    Code:
    Math.floor((fromStat[2] - 1) / step[1]) * step[1]+1; // (23 - 1) / 10 = 2.2 -> floor = 2 -> 2 * 10 +1 = 21
    But i'm not sure what exactly this is supposed to accomplish. I just know that a value like 221 does NOT work.


    Btw: Steps in the same function is used multiple times for division. If steps === 0, you get 123/0 === Infinity, causing other systems that don't handle this case to fail. Ultimately ending in error messages like "undefined has no method 'substring'".
    Last edited by mAritz; 14 Dec 2011 at 1:29 AM. Reason: Comments in code examples/fix were wrong

  2. #2
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    Default


    Can I get a fully runnable test case?
    Mitchell Simoens @SenchaMitch
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    Default


    I'm rather new to Ext.js and haven't looked at the way you do tests, so I can't promise anything. But I'll try to get it in my schedule sometime next week.

    Edit: But I do see that I made an error in my comments in the code examples. I'll fix it tomorrow.

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    Default


    Guess I misunderstood your request.

    I changed the example in Ext.chart.axis.Numeric to reproduce the error. (and removed some parts to make it easier to read)

    Code:
    var store = Ext.create('Ext.data.JsonStore', {
      fields: ['date', 'data1', 'data2', 'data3', 'data4', 'data5'],
      data: [
        {'date':new Date('2011-10-21'), 'data1':10},
        {'date':new Date('2011-12-01'), 'data1':1}
        // more data would go here, removed to conserve space
      ]
    });
    
    
    Ext.create('Ext.chart.Chart', {
      renderTo: Ext.getBody(),
      width: 1000,
      height: 800,
      store: store,
      axes: [{
        type: 'Numeric',
        position: 'left',
        fields: ['data1'],
        title: 'Sample Values',
        minimum: 0
      }, {
        type: 'Time',
        position: 'bottom',
        fields: ['date'],
        dateFormat: 'Y-m-d',
        grid: true,
        step: [Ext.Date.DAY, 15],
        fromDate: new Date('2011-10-20'),
        toDate: new Date('2012-01-31')
      }],
      series: [{
        type: 'line',
        highlight: false,
        axis: ['bottom', 'left'],
        xField: ['date'],
        yField: ['data1'],
        style: {
          opacity: 0.93
        }
      }]
    });
    This will result in no grid and only 2 labels on the time axis, one of which is 0NaN-NaN-NaN. This is still mild however, I've had cases where the chart didn't draw at all with other fromDate/toDate/step values.

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    Default


    Yeah, to be honest I've had problems with the time axis. Thanks for the test case!
    Mitchell Simoens @SenchaMitch
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    Default


    Any news on this?

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    Default


    Ping

  8. #8
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    Default


    Quote Originally Posted by mAritz View Post
    Ping
    Yes? This is still marked as [OPEN]
    Mitchell Simoens @SenchaMitch
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  9. #9
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    Default


    Oh, my mistake, I'm sorry. I never scrolled back up that far to see either the "[Open]" or the "You found a bug! We've classified it as EXTJSIV-4757".

    Thus I wasn't sure this was actually accepted as a bug.

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