// suggested in .99.1 version:
/// <summary>Delete a set of columns from a table.</summary>
/// <param name="column">The zero-indexed start column.</param>
/// <param name="len">The number of columns to delete.</param>
/// <param name="fields">Stems for the header fields to be removed for the table.</param>
public void DeleteColumnsIndexZero(int column, int len, String[] fields)
{
if (column < 0 || len < 0 || column + len > NCols)
{
throw new FitsException("Illegal columns deletion request- Start:" + column + " Len:" + len + " from table with " + NCols + " columns");
}
if (len == 0)
{
return;
}
int ncol = NCols;
table.DeleteColumns(column, len);
// Get rid of the keywords for the deleted columns
for (int col = column; col < column + len; col += 1)
{
for (int fld = 0; fld < fields.Length; fld += 1)
{
String key = fields[fld] + (col + 1);
myHeader.DeleteKey(key);
}
}
// Shift the keywords for the columns after the deleted columns
for (int col = column + len; col < ncol; col += 1)
{
for (int fld = 0; fld < fields.Length; fld += 1)
{
String oldKey = fields[fld] + (col + 1);
String newKey = fields[fld] + (col + 1 - len);
if (myHeader.ContainsKey(oldKey))
{
myHeader.ReplaceKey(oldKey, newKey);
}
}
}
// Update the number of fields.
myHeader.AddValue("TFIELDS", NCols, "Number of table fields");
// Give the data sections a chance to update the header too.
table.UpdateAfterDelete(ncol, myHeader);
}
