CODEWITHSUNDEEP
c#winformscharts
newprogrammer
newprogrammer

Reputation: 53

Formating the Line Chart in Windows Forms

I am new to c# programming and creating my first Windows forms application. I have a two 1-D Arrays, one represents the X Axis Values and the other represents Y axis.

I am trying to create a graph from them using the following code.

public void drawgraph()
    {
        chart1.Series["Series1"].Name = MemsName;
        for (int i = 0; i < VmicArray.Length; i++)
        {
            chart1.Series[MemsName].Points.AddXY(VmicArray[i], SensitivityArray[i]);

        }

        chart1.ChartAreas[0].AxisX.Title = "Vmic Value";
        chart1.ChartAreas[0].AxisY.Title = "Sensitivity";
    }

I am getting the XAxis values which I have in Array(like -2.333333754 or 6.46870) with the interval of 5 which I have set. The range of X axis is have is from -4 to +8.

Is there anyone who can help me in getting a ouput like we get in Excel Graphs? I am trying for Long time always I mess up with the values of X axis.

I Need the graph with XAxis value from -10 to +10 with the interval of 1 and mapping the Y values to corresponding X values on graph.

Unfortunately I am not able to post any Images :(

Upvotes: 1

Views: 1985

Answers (1)

Jens
Jens

Reputation: 6375

If you want to project a certain range of values to another range you need to use linear interpolation between the values. First determine the old min and max values (MinX and MaxX) and define the new limits (-10, 10).

Then use a simple formula to determine the new x value of an arbitrary old value.

double MinX = VmicArray.min;
double MaxX = VmicArray.Max;

double NewMin = -10;
double NewMax = 10;

for (i = 0; i <= VmicArray.Count - 1; i++) {
    // Linear interpolation     
    double NewX = VmicArray(i) / (MaxX - MinX) * (NewMax - NewMin) + NewMin;
}

Recalculate each X value before you use AddXY.

In order to just change the visible bounds of each axis you can use the XAxis.Minimum and XAxis.Maximum as well as the XAxis.Interval properties:

chart1.ChartAreas[0].AxisX.Minimum = -10;
chart1.ChartAreas[0].AxisX.Maximum = 10;
chart1.ChartAreas[0].AxisX.Interval = 1;

Upvotes: 1

Related Questions