CODEWITHSUNDEEP
asp.netvisual-studio-2010charts
Chad
Chad

Reputation: 24679

Visual Studio 2010 Chart control: Make Y Axis an Integer value, not decimal

I like the way that the chart control seems to automatically determine the X axis range for me based on the data, but in this case, the data can only be whole numbers.

What is the easiest way to specify whole numbers for this axis?

alt text

Upvotes: 6

Views: 7087

Answers (4)

Stuart
Stuart

Reputation: 669

<ChartAreas>
    <asp:ChartArea Name="Default">
        <AxisY Interval="1" IntervalType="Number"></AxisY>
    </asp:ChartArea>
</ChartAreas>

Upvotes: 0

DanS
DanS

Reputation: 66

Looks like you can do this by setting the YValueType property on any relevant series to an integer type - for example:

Chart.Series[0].YValueType = ChartValueType.Int32;

Upvotes: 4

Mateusz
Mateusz

Reputation: 133

It isn't working for very small amounts (1-5 clicks). I have solved that like this:

Dictionary<string, int> clicks = new Dictionary<string, int>();
for (int i = 0; i < 24; i++)
{
    clicks.Add(string.Format("{0:00}:00", i), 0);
}

foreach (DateTime dateTime in rawClicks)
{
    clicks[string.Format("{0:00}:00", dateTime.Hour)]++;
}

Chart chart = new Chart();    
chart.ChartAreas.Add("Default");

Axis x = chart.ChartAreas["Default"].AxisX;
Axis y = chart.ChartAreas["Default"].AxisY;

x.Interval = 1;
x.IntervalType = DateTimeIntervalType.Auto;

chart.Series.Add("Default");
chart.Series["Default"]["PixelPointWidth"] = "15";

int maxNumberOfClicks = 0;

for (int i = 0; i < 24; i++)
{
    string key = string.Format("{0:00}:00", i);
    chart.Series["Default"].Points.AddXY(key, clicks[key]);

    if (maxNumberOfClicks < clicks[key])
    {
        maxNumberOfClicks = clicks[key];
    }
}

y.Interval = Math.Ceiling((double)maxNumberOfClicks / (double)7);
if (y.Interval == 0)
{
    y.Interval = 1;
}

Upvotes: 2

Chad
Chad

Reputation: 24679

    chartClicks.ChartAreas(0).AxisY.IntervalOffsetType = DateTimeIntervalType.Number

Upvotes: 2

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