The XTG format (extensible TreeGraph format) is a XML format used by TreeGraph 2 to
read and write its documents. This page is the documentation of the XML Schema for XTG.
This class is used by the GlobalFormats element, which specifies the
global document formats. The
attributes and subelements store the values of the single formats which are described
here.
This abstract class defines the attributes used by the type of line elements which are not text elements
at the same time (BranchType and
IconLabelType). Types of other line elements inherit from
TextLineType instead.
This abstract class adds the attributes used by the type of a line elements which are also text elements
(NodeType, LegendType and
ScaleBarType).
The other line element types (BranchType and
IconLabelType) declare these attributes independently, since inheriting
from multiple types is not possible in XSD.
The attribute Text can either contain the textual or the numeric value of the text element
represented by the XML element. IsDecimal defines weather the value of Text
must be float or can be any textual value. If IsDecimal is trueDecimalFormat, LocaleLang, LocaleCountry and
LocaleVariant define how this value will be formatted by the application. Note that although
declared as xsd:string here not every string value is valid for these attributes (See javadoc
links below for details).
This type restricts a xsd:string to all valid color values. A valid color value in XTG starts
with a # followed by six hexadecimal charcters (e.g. #FF0000 for red).
This type restricts a xsd:string to an empty string or a sequence of characters (a..z, A..Z).
It is used for the attributes of TextType which specify the locale information
used to format numeric values.
This type restricts a xsd:string to all valid scale bar width values. The width of a
scale bar is a float value followed by a unit identifier (mm for millimeters or
u for branch length units).
This type restricts a xsd:string to all valid text style values. A valid text style value in
XTG can consists of the combination of b (bold), i (italic) and
u (underlined).
The XML Instance Representation table above shows the schema component's content as an XML instance.
The minimum and maximum occurrence of elements and attributes are provided in square brackets, e.g. [0..1].
Model group information are shown in gray, e.g. Start Choice ... End Choice.
For type derivations, the elements and attributes that have been added to or changed from the base type's content are shown in bold.
If an element/attribute has a fixed value, the fixed value is shown in green, e.g. country="Australia".
Otherwise, the type of the element/attribute is displayed.
If the element/attribute's type is in the schema, a link is provided to it.
For local simple type definitions, the constraints are displayed in angle brackets, e.g. <<pattern = [1-9][0-9]{3}>>.
If a local element/attribute has documentation, it will be displayed in a window that pops up when the question mark inside the attribute or next to the element is clicked, e.g. <postcode>.
Abstract
(Applies to complex type definitions and element declarations). An abstract element or complex type cannot used to validate an element instance. If there is a reference to an abstract element, only element declarations that can substitute the abstract element can be used to validate the instance. For references to abstract type definitions, only derived types can be used.
Collapse Whitespace Policy
Replace tab, line feed, and carriage return characters with space character (Unicode character 32). Then, collapse contiguous sequences of space characters into single space character, and remove leading and trailing space characters.
Disallowed Substitutions
(Applies to element declarations). If substitution is specified, then substitution group members cannot be used in place of the given element declaration to validate element instances. If derivation methods, e.g. extension, restriction, are specified, then the given element declaration will not validate element instances that have types derived from the element declaration's type using the specified derivation methods. Normally, element instances can override their declaration's type by specifying an xsi:type attribute.
Model Group
Groups together element content, specifying the order in which the element content can occur and the number of times the group of element content may be repeated. See: http://www.w3.org/TR/xmlschema-1/#Model_Groups.
Nillable
(Applies to element declarations). If an element declaration is nillable, instances can use the xsi:nil attribute. The xsi:nil attribute is the boolean attribute, nil, from the http://www.w3.org/2001/XMLSchema-instance namespace. If an element instance has an xsi:nil attribute set to true, it can be left empty, even though its element declaration may have required content.
Notation
A notation is used to identify the format of a piece of data. Values of elements and attributes that are of type, NOTATION, must come from the names of declared notations. See: http://www.w3.org/TR/xmlschema-1/#cNotation_Declarations.
Preserve Whitespace Policy
Preserve whitespaces exactly as they appear in instances.
Prohibited Derivations
(Applies to type definitions). Derivation methods that cannot be used to create sub-types from a given type definition.
Prohibited Substitutions
(Applies to complex type definitions). Prevents sub-types that have been derived using the specified derivation methods from validating element instances in place of the given type definition.
Replace Whitespace Policy
Replace tab, line feed, and carriage return characters with space character (Unicode character 32).
Substitution Group
Elements that are members of a substitution group can be used wherever the head element of the substitution group is referenced.
Substitution Group Exclusions
(Applies to element declarations). Prohibits element declarations from nominating themselves as being able to substitute a given element declaration, if they have types that are derived from the original element's type using the specified derivation methods.
Target Namespace
The target namespace identifies the namespace that components in this schema belongs to. If no target namespace is provided, then the schema components do not belong to any namespace.