Column set chart data model about hellocharts-android

[lecho]

There's a method ColumnChartView.setColumnChartData(ColumnChartData data).
In most cases you should use data model specific for given type of chart, for ColumnChartView it's ColumnChartData.

[thomaslc66]

Thanks i've just seen you're answer. But i was doing it the right way.
Can you help me to set the label with the value on my columns??

[lecho]

If you mean label above column, use this method column.setHasLabels(true);

[thomaslc66]

And i've done this

//values of the axeY
List<AxisValue> axisValues = new ArrayList<AxisValue>();
axisValues.add(new AxisValue(1));
axisValues.add(new AxisValue(2));
axisValues.add(new AxisValue(3));
axisValues.add(new AxisValue(4));
axisValues.add(new AxisValue(5));
axisValues.add(new AxisValue(6));
axisValues.add(new AxisValue(7));

//Gestion of the two axes for the graphic
Axis axeX = new Axis(axisValues);

data.setAxisXBottom(axeX);

But i didn't see my seven values in my axeX

[thomaslc66]

• althougth my axisY is display some of my number but not all. Only 1 to 6 but not 7. How can i make the graph show all of them.

Ps. I think you should write a documentation for you library it could be usefull

[lecho]

Yea, there should be documentation and I will try to add some but it will take time and right now I need a little break. Most of library functions are covered in samples project, but there will always be some special cases that I'm not aware of until someone open new issue.

Back to problem. Axes values have to be within chart viewport to be visible. By default viewport is calculated based on chart values. So for example if your max value on X axis is 6 no axis values greater than that will be displayed. Other possibility is some rounding error in viewport calculation.

Try to experiment with viewport size, here is simple example how to modify(extend) viewport in both directions by 10%:

Viewport v = new Viewport(chart.getMaximumViewport());
float dx = 0.1f * v.width();
float dy = 0.1f * v.height();
v.inset(-dx, -dy);
chart.setMaximumViewport(v);
chart.setCurrentViewport(v, false);

[thomaslc66]

thanks for the help. the viewport thing help me to show more of the graph.

But my 1st problem was that i was not able to see the value of the graph

    //values of the axeY
    List<AxisValue> axisValuesForY = new ArrayList<AxisValue>();

    for (int i = 1; i < 100; i +=10){
        axisValuesForX.add(new AxisValue(i));
    }

    Axis axeX = new Axis(axisValuesForX);
    Axis axeY = new Axis(axisValuesForY);

    data.setAxisXBottom(axeX);
    data.setAxisYLeft(axeY);

i've done this and nothing show's up on the axeY neither for X.
Plus i've put this.

    axeX.setName("Days");
    axeY.setName("amount");

and only day is displayed