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    Default Answered: Applying specific colors to pie slices

    Answered: Applying specific colors to pie slices


    I have a requirement to associate a specific color to a pie slice. This information is retrieved from the server along with the charting data.

    I have already tried setting colorSet to the list of colors. This works most of the time, except if one of the slices have a '0' value associated with it. Using this example http://dev.sencha.com/deploy/touch-c.../examples/Pie/ as reference, lets say here is what needs to be plotted -

    Month, Value, Color
    Jan, 10, #aaaaaa
    Feb, 20, #bbbbbb
    Mar, 0, #cccccc
    Apr, 30, #dddddd

    colorSet = [#aaaaaa, #bbbbbb, #cccccc, #dddddd]

    Since value=0 for Mar, Apr getting filled with #cccccc.

    Is there a way to decide which color to select at the time of drawing rather than when the object is created? Looking at the piechart code, it would be good to have a 'getPieSliceColor' method that I could override (similar to the getLegendColor method).

  2. Ok I figured out what was going on. In my store, I have specified a sorter which orders the data.

    I was setting colorSet by iterating over Ext.getStore('blah').data.all and extracting the color. This data was not sorted!!

    I wrote a function to sort the data before setting the colorSet and now it works fine.

    Question - Is there a way to extract data from the store in sorted order? I see there is a sort() function in the Store class, but does that change the underlying data or just return a sorted copy of the data?

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    Default


    No, you are only able to use the array like you have
    Mitchell Simoens @SenchaMitch
    Sencha Inc, Senior Forum Manager
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  4. #3
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    Default


    Ok I figured out what was going on. In my store, I have specified a sorter which orders the data.

    I was setting colorSet by iterating over Ext.getStore('blah').data.all and extracting the color. This data was not sorted!!

    I wrote a function to sort the data before setting the colorSet and now it works fine.

    Question - Is there a way to extract data from the store in sorted order? I see there is a sort() function in the Store class, but does that change the underlying data or just return a sorted copy of the data?