public static DataFrame FromDataTable(DataTable table)
{
var df = new DataFrame();
var rowCount = table.Rows.Count;
foreach (DataColumn column in table.Columns)
{
var name = column.ColumnName;
df.DefineNewColumn(name, DataFrameColumnFactory.Create(column.DataType, df, rowCount, 0));
}
var columns = new DataFrameColumnBase[df.ColumnCount];
for (var i = 0; i < columns.Length; ++i)
{
columns[i] = df.GetColumn(i);
}
foreach (DataRow row in table.Rows)
{
for (var i = 0; i < columns.Length; ++i)
{
columns[i].AddObject(row[i]);
}
}
return(df);
}
public DataFrame Clone()
{
var df = new DataFrame();
for (var i = 0; i < ColumnCount; ++i)
{
df.DefineNewColumn(ColumnNames[i], DataFrameColumnFactory.Clone(GetColumn(i)));
}
return(df);
}
public static DataFrame CreateLike(DataFrame source, int capacity, int fillSize)
{
var df = new DataFrame();
foreach (var name in source.ColumnNames)
{
df.DefineNewColumn(name, DataFrameColumnFactory.Create(source.GetColumn(name).DataType, df, capacity, fillSize));
}
return(df);
}
