public MatrisBase <object> Head(MatrisBase <object> df,
int n = 5)
{
if (!df.IsValid())
{
throw new Exception(CompilerMessage.DF_INVALID_SIZE);
}
n = Math.Min(n, df.Row);
if (n <= 0 || df.Row < n)
{
throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("satır", 1, df.Row));
}
return(df.Row == n
? df is Dataframe ? ((Dataframe)df.Copy()) : df.Copy()
: df is Dataframe dataframe
? new Dataframe(dataframe[new Range(0, n)],
dataframe.Delimiter,
dataframe.NewLine,
null,
Dataframe.GetCopyOfLabels(dataframe.GetColLabels()),
dataframe.GetRowSettings().Copy(),
dataframe.GetColSettings().Copy())
: new MatrisBase <object>(df[new Range(0, n)]));
}
public MatrisBase <object> Set(MatrisBase <object> A,
int i,
int j,
float value,
int based = 0)
{
if (!A.IsValid())
{
throw new Exception(CompilerMessage.MAT_INVALID_SIZE);
}
if (i - based < 0 || i - based >= A.Row)
{
throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("satır", based, A.Row - 1));
}
if (j - based < 0 || j - based >= A.Col)
{
throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("sütun", based, A.Col - 1));
}
List <List <object> > newlis = A is Dataframe ? ((Dataframe)A.Copy()).GetValues() : A.Copy().GetValues();
newlis[i - based][j - based] = (dynamic)value;
return(A is Dataframe df
? new Dataframe(newlis,
df.Delimiter,
df.NewLine,
Dataframe.GetCopyOfLabels(df.GetRowLabels()),
Dataframe.GetCopyOfLabels(df.GetColLabels()),
df.GetRowSettings().Copy(),
df.GetColSettings().Copy())
: new MatrisBase <object>(newlis));
}
public MatrisBase <object> Get(MatrisBase <object> A,
int i,
int j,
int based = 0)
{
return(!A.IsValid()
? throw new Exception(CompilerMessage.MAT_INVALID_SIZE)
: i - based < 0 || i - based >= A.Row
? throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("satır", based, A.Row - 1))
: j - based < 0 || j - based >= A.Col
? throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("sütun", based, A.Col - 1))
: A is Dataframe df
? new Dataframe(new List <List <object> >()
{
new List <object>()
{
A[r: i - based, c: j - based]
}
},
df.Delimiter,
df.NewLine,
null,
null,
df.GetRowSettings().Copy(),
df.GetColSettings().Copy())
: new MatrisBase <object>(new List <List <object> >()
{
new List <object>()
{
A[r: i - based, c: j - based]
}
}));
}
public MatrisBase <object> MinorMatris(MatrisBase <object> A,
int row,
int col,
int based = 0)
{
if (!A.IsSquare())
{
throw new Exception(CompilerMessage.MAT_NOT_SQUARE);
}
CompilerUtils.AssertMatrixValsAreNumbers(A);
List <List <object> > newlis = new List <List <object> >();
List <List <object> > vals = A.GetValues();
row -= based;
col -= based;
if (row < 0 || row >= A.Row)
{
throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("satır", based, A.Row - based));
}
if (col < 0 || col >= A.Col)
{
throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("sütun", based, A.Col - based));
}
int rowindex = 0;
for (int i = 0; i < row; i++)
{
newlis.Add(new List <object>());
for (int j = 0; j < col; j++)
{
newlis[rowindex].Add(vals[i][j]);
}
for (int j = col + 1; j < A.Col; j++)
{
newlis[rowindex].Add(vals[i][j]);
}
rowindex++;
}
for (int i = row + 1; i < A.Row; i++)
{
newlis.Add(new List <object>());
for (int j = 0; j < col; j++)
{
newlis[rowindex].Add(vals[i][j]);
}
for (int j = col + 1; j < A.Col; j++)
{
newlis[rowindex].Add(vals[i][j]);
}
rowindex++;
}
return(new MatrisBase <object>(newlis));
}
public MatrisBase <object> Col(MatrisBase <object> A,
int j,
int based = 0)
{
return(!A.IsValid()
? throw new Exception(CompilerMessage.MAT_INVALID_SIZE)
: j - based < 0 || j - based >= A.Col
? throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("sütun", based, A.Col - 1))
: A.ColMat(j, based));
}
public MatrisBase <object> Row(MatrisBase <object> A,
int i,
int based = 0)
{
return(!A.IsValid()
? throw new Exception(CompilerMessage.MAT_INVALID_SIZE)
: i - based < 0 || i - based >= A.Row
? throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("satır", based, A.Row - 1))
: A.RowMat(i, based));
}
public MatrisBase <object> Sample(MatrisBase <object> df,
int n = 5)
{
if (!df.IsValid())
{
throw new Exception(CompilerMessage.DF_INVALID_SIZE);
}
int nr = df.Row;
n = Math.Min(n, nr);
if (n <= 0 || nr < n)
{
throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("satır", 1, nr));
}
if (nr == n)
{
return(df is Dataframe ? ((Dataframe)df.Copy()) : df.Copy());
}
else
{
List <List <object> > newList = new List <List <object> >();
List <List <object> > shuffled = new MatrisArithmeticService().Shuffle(df, 0).GetValues();
for (int i = 0; i < n; i++)
{
newList.Add(shuffled[i]);
}
return(df is Dataframe dataframe
? new Dataframe(newList,
dataframe.Delimiter,
dataframe.NewLine,
null,
Dataframe.GetCopyOfLabels(dataframe.GetColLabels()),
dataframe.GetRowSettings().Copy(),
dataframe.GetColSettings().Copy()
)
: new MatrisBase <object>(newList));
}
}
public MatrisBase <object> Sub(MatrisBase <object> A,
int r1,
int r2,
int c1,
int c2,
int based = 0)
{
if (!A.IsValid())
{
throw new Exception(CompilerMessage.MAT_INVALID_SIZE);
}
r1 -= based;
r2 -= based;
if (r2 <= r1 || r1 < 0)
{
throw new Exception(CompilerMessage.MAT_INVALID_ROW_INDICES);
}
c1 -= based;
c2 -= based;
if (c2 <= c1 || c1 < 0)
{
throw new Exception(CompilerMessage.MAT_INVALID_COL_INDICES);
}
return(r2 > A.Row
? throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("satır", based, A.Row - 1))
: c2 > A.Col
? throw new Exception(CompilerMessage.MAT_OUT_OF_RANGE_INDEX("sütun", based, A.Col - 1))
: A is Dataframe df
? new Dataframe(A[new Range(r1, r2), new Range(c1, c2)],
df.Delimiter,
df.NewLine,
null,
null,
df.GetRowSettings().Copy(),
df.GetColSettings().Copy())
: new MatrisBase <object>(A[new Range(r1, r2), new Range(c1, c2)]));
}