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    Looks like we can't reproduce the issue or there's a problem in the test case provided.
  1. #1
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    Default no y axis when y values all the same

    no y axis when y values all the same


    Hi Sencha Devs,

    I'm using extjs4.1 and having trouble with generating a graph where all of the values in the store have the same y value. Whenever I create a graph like this, the Y axis is not rendered. (Though the data points seem to be in the correct locations).

    Here's some sample code:

    Code:
    Ext.require([
        'Ext.data.Model',
        'Ext.data.Store',
        'Ext.chart.*'
    ]);
    
    
    Ext.onReady(function() {
    
    
        Ext.define('Stat', {
            extend: 'Ext.data.Model',
            fields: [
                { name: 'date', type: 'int' },
                { name: 'stat', type: 'int' }
            ]
        });
        
        var store = Ext.create('Ext.data.Store', {
            model: 'Stat',
            autoSync: true,
            proxy: {
                type: 'memory',
                reader: {
                    type: 'json'
                }
            },
            data: [ 
                {stat: 1, date: 1350910683}, 
                {stat: 1, date: 1350910684},
                {stat: 1, date: 1350910685},  
                {stat: 1, date: 1350910686},  
                {stat: 1, date: 1350910687},  
                {stat: 1, date: 1350910688},  
                {stat: 1, date: 1350910689}
            ]
        });
        
        Ext.create('Ext.chart.Chart', {
            xtype: 'chart',
            height: 350,
            width: 400,
            store: store,
            shadow: true,
            title: "test graph",
            renderTo: Ext.getBody(),
            axes: [{
                title: 'stat',
                type: 'Numeric',
                position: 'left',
                fields: ['stat']
            },{
                type: 'Numeric',
                position: 'bottom',
                fields: ['date'],
                title: 'Time',
                label: {
                    renderer: function(value) {
                        var date = Ext.Date.parse(Math.floor(value), "U");
                        return Ext.Date.format(date, "H:i:s") + "\n" + Ext.Date.format(date, "M j") ;
                    }
                }
            }],
            series: [{
                type: 'line',
                fill: false,
                axis: ['left', 'bottom'],
                xField: 'date',
                yField: 'stat',
                highlight: {
                    size: 7,
                    radius: 7
                },
                markerConfig: {
                    radius: 4,
                    size: 4
                }
            }]
        });
    
    
    });
    And the resulting graph looks like this:

    no_y_axis.PNG

    If I change only one value in my store: (i.e. change the last record to a 2 instead of a 1)

    Code:
       var store = Ext.create('Ext.data.Store', {
            model: 'Stat',
            autoSync: true,
            proxy: {
                type: 'memory',
                reader: {
                    type: 'json'
                }
            },
            data: [ 
                {stat: 1, date: 1350910683}, 
                {stat: 1, date: 1350910684},
                {stat: 1, date: 1350910685},  
                {stat: 1, date: 1350910686},  
                {stat: 1, date: 1350910687},  
                {stat: 1, date: 1350910688},  
                {stat: 2, date: 1350910689}
            ]
        });
    Then the y axis renders properly, as shown below:

    y_axis.PNG

    Is this a known issue? Is there any known workaround to this problem? We build graphs with many different data ranges, so manually specifying max/min is tricky. Thanks for any insight anyone can provide!

    Kyle

  2. #2
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    Default


    Are you using 4.1.0 or 4.1.1?
    Mitchell Simoens @SenchaMitch
    Sencha Inc, Senior Forum Manager
    ________________
    Check out my GitHub, lots of nice things for Ext JS 4 and Sencha Touch 2
    https://github.com/mitchellsimoens

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    When posting code, please use BBCode's CODE tags.

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    Default


    I'm using extjs4.1.0 in this example, although I've since downloaded 4.1.1. I'll try re-running with the new load and post the result.

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    I just updated to 4.1.1a and my test application seems to be working. I'll update our main software with the new build. Thanks for the info!

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