public static void DrawLineChart(ref List <InputTxtData> data,
ref List <int> filteredDataValues,
ref Graphics g,
TimeSpan statingTime,
TimeSpan endingTime,
int MinValue,
int MaxValue,
int imageWidth,
int imageHeight,
Pen currentPen)
{
long durationInSeconds = (long)(endingTime.TotalSeconds - statingTime.TotalSeconds);
float yScale = (float)imageHeight / (float)MaxValue;
float xScale = (float)imageWidth / (float)durationInSeconds;
InputTxtData previousData = null;
int previousValue = MinValue;
for (int i = 0; i < data.Count; i++)
{
if (previousData != null)
{
g.DrawLine(currentPen, (float)(previousData.Timestamp - statingTime).TotalSeconds * xScale,
imageHeight - (previousValue * yScale),
(float)(data[i].Timestamp - statingTime).TotalSeconds * xScale,
imageHeight - (filteredDataValues[i] * yScale));
}
previousData = data[i];
previousValue = filteredDataValues[i];
}
}
public void DrawChart(ref List <InputTxtData> data,
ref Graphics g,
TimeSpan statingTime,
TimeSpan endingTime,
int MinValue,
int MaxValue,
int imageWidth,
int imageHeight)
{
List <int> dataValues = new List <int>();
long durationInSeconds = (long)(endingTime.TotalSeconds - statingTime.TotalSeconds);
float yScale = (float)imageHeight / (float)MaxValue;
float xScale = (float)imageWidth / (float)durationInSeconds;
InputTxtData previousData = null;
int previousValue = MinValue;
int averageGroupSize = data.Count / imageWidth;
int averageCounterIndex = 0;
float averageValue = 0;
for (int i = 0; i < data.Count; i++)
{
int currentValue = (int)data[i].AirQualityValue;
if (averageCounterIndex < averageGroupSize)
{
averageValue += currentValue;
averageCounterIndex++;
continue;
}
else
{
averageValue /= averageGroupSize;
averageCounterIndex = 0;
currentValue = (int)Math.Round(averageValue, MidpointRounding.AwayFromZero);
}
if (previousData != null)
{
_currentPen = GetPen(currentValue);
Brush currentBrush = new SolidBrush(_currentPen.Color);
float x1 = (float)(previousData.Timestamp - statingTime).TotalSeconds * xScale;
float x2 = (float)(data[i].Timestamp - statingTime).TotalSeconds * xScale;
float width = x2 - x1;
float height = imageHeight - (currentValue * yScale);
g.DrawRectangle(_currentPen,
x1,
0,
width,
imageHeight);// - height);
}
previousData = data[i];
previousValue = currentValue;
}
}