public static int[] LowestValIndices(double[,] a, int dim, int numberPoints)
//returns a list of indices corresponding to the lowest values within a list at a certain dimension.
{
double[] min = { a[0, dim], 0 }; //first entry min, second corresponding index
List <int> used = new List <int>();
int[] smalls = new int[numberPoints];
for (int i = 0; i < numberPoints; i++)
{
for (int j = 0; j < a.GetLength(0); j++)
{
if ((a[j, dim] < min[0]) && (!used.Contains(j)))
{
min[0] = a[j, dim];
min[1] = j;
}
}
smalls[i] = (int)min[1];
used.Add(smalls[i]);
min[0] = 1000;
min[1] = 0;
}
smalls = Sort(smalls);
smalls = DataConversion.ReverseArray(smalls);
return(smalls);
}
public static double[] GetYValues(DicomDataset doseData)
{
int[] orientation = doseData.Get <int[]>(DicomTag.ImageOrientationPatient);
double[] doseCorner = doseData.Get <double[]>(DicomTag.ImagePositionPatient);
int rows = doseData.Get <int>(DicomTag.Rows);
double[] pixelSpacing = doseData.Get <double[]>(DicomTag.PixelSpacing);
double[] yValues = new double[rows];
if ((orientation[0] == 1) && (orientation[1] == 0) && (orientation[2] == 0))
{
for (int i = 0; i < rows; i++)
{
yValues[i] = pixelSpacing[1] * i + doseCorner[1];
}
}
else if ((orientation[0] == -1) && (orientation[1] == 0) && (orientation[2] == 0))
{
for (int i = 0; i < rows; i++)
{
yValues[i] = -pixelSpacing[1] * i + doseCorner[1];
yValues = DataConversion.ReverseArray(yValues);
}
}
else
{
Console.WriteLine("patient orientation error encountered. Terminating.");
Environment.Exit(2);
}
return(yValues);
}
public static double[] GetZValues(DicomDataset doseData)
//This method gives back a double array with elements corresponding to the z-values for the doseMatrix 3rd dimension.
{
double[] offsetVector = doseData.Get <double[]>(DicomTag.GridFrameOffsetVector);
double[] doseCorner = doseData.Get <double[]>(DicomTag.ImagePositionPatient);
//If first element starts with a 0, its a relative offset. if it starts with non-zero, it is patient coordinate system values
if (offsetVector[0] != 0)
{
for (int i = 0; i < offsetVector.Length; i++)
{
offsetVector[i] -= offsetVector[0];
}
}
double[] zValues = new double[offsetVector.Length];
for (int i = 0; i < offsetVector.Length; i++)
{
zValues[i] = offsetVector[i] + doseCorner[2];
}
//Now flip if sorted by descending z.
if (zValues[1] - zValues[0] < 0)
{
zValues = DataConversion.ReverseArray(zValues);
}
return(zValues);
}
public static double[] GetXValues(DicomDataset doseData)
{
int[] orientation = doseData.Get <int[]>(DicomTag.ImageOrientationPatient);
double[] doseCorner = doseData.Get <double[]>(DicomTag.ImagePositionPatient);
int cols = doseData.Get <int>(DicomTag.Columns);
double[] pixelSpacing = doseData.Get <double[]>(DicomTag.PixelSpacing);
double[] xValues = new double[cols];
if ((orientation[3] == 0) && (orientation[4] == 1) && (orientation[5] == 0))
{
for (int i = 0; i < cols; i++)
{
xValues[i] = pixelSpacing[0] * i + doseCorner[0];
}
}
else if ((orientation[3] == 0) && (orientation[4] == -1) && (orientation[5] == 0))
{
for (int i = 0; i < cols; i++)
{
xValues[i] = -pixelSpacing[0] * i + doseCorner[0];
xValues = DataConversion.ReverseArray(xValues);
}
}
else
{
Console.WriteLine("patient orientation error encountered. Terminating.");
Environment.Exit(2);
}
return(xValues);
}
