/// <summary>
/// Returns a string representation of this instance.
/// </summary>
/// <returns>The string representation of the current object.</returns>
public override string ToString()
{
if (DateFormat == DefaultDateFormat)
{
return("date");
}
else
{
return("date " + ArffWriter.QuoteAndEscape(DateFormat));
}
}
/// <summary>
/// Writes an ARFF file with the specified path, relation name, attributes and instances.
/// </summary>
/// <param name="path">The path of the file that should be written.</param>
/// <param name="relationName">The name of the relation that is to be written.</param>
/// <param name="attributes">The attributes of the data to be written.</param>
/// <param name="instances">The instance data to write. Length and element types must conform to the attributes.
/// <para>
/// The expected element types depend on the type of their corresponding attribute:
/// <see cref="double"/> (numeric attribute),
/// <see cref="string"/> (string attribute),
/// <see cref="int"/> (nominal attribute, index into nominal values array),
/// <see cref="DateTime"/> (date attribute),
/// <see cref="object"/>[][] (relational attribute).
/// Missing values should be represented as <c>null</c>.</para>
/// </param>
/// <param name="sparse">True, if the instances should be written in sparse format.</param>
/// <exception cref="UnauthorizedAccessException"/>
/// <exception cref="ArgumentNullException"/>
/// <exception cref="ArgumentException"/>
/// <exception cref="DirectoryNotFoundException"/>
/// <exception cref="IOException"/>
/// <exception cref="PathTooLongException"/>
/// <exception cref="System.Security.SecurityException"/>
public static void Write(string path, string relationName, IEnumerable <ArffAttribute> attributes, IEnumerable <object[]> instances, bool sparse)
{
if (attributes == null)
{
throw new ArgumentNullException(nameof(attributes));
}
using (ArffWriter arffWriter = new ArffWriter(path))
{
arffWriter.WriteRelationName(relationName);
foreach (ArffAttribute attribute in attributes)
{
arffWriter.WriteAttribute(attribute);
}
arffWriter.WriteAllInstances(instances, sparse);
}
}
/// <summary>
/// Returns a string representation of this instance.
/// </summary>
/// <returns>The string representation of the current object.</returns>
public override string ToString()
{
return($"@attribute {ArffWriter.QuoteAndEscape(Name)} {Type}");
}
/// <summary>
/// Returns a string representation of this instance.
/// </summary>
/// <returns>The string representation of the current object.</returns>
public override string ToString()
{
return($"@relation {ArffWriter.QuoteAndEscape(RelationName)} ({Attributes.Count} attribute{(Attributes.Count == 1 ? "" : "s")})");
}