att.stems

Attributes that describe the properties of stemmed features; that is, chords and notes.
2.2.3 Basic Music Events, 5.6.2 Stems
Module
MEI.shared
Attributes
stem.dir, stem.form, stem.len, stem.mod, stem.pos, stem.sameas, stem.visible, stem.with, stem.x, stem.y
stem.dir(optional)Describes the direction of a stem. Value conforms to data.STEMDIRECTION.
<att.stems>direct children@stem.dir
stem.form(optional)Records the form of the stem. Value conforms to data.STEMFORM.mensural.
<att.stems>att.stems.mensural@stem.form
stem.len(optional)Encodes the stem length. Value conforms to data.MEASUREMENTUNSIGNED.
<att.stems>direct children@stem.len
stem.mod(optional)Encodes any stem "modifiers"; that is, symbols rendered on the stem, such as tremolo or Sprechstimme indicators. Value conforms to data.STEMMODIFIER.
<att.stems>direct children@stem.mod
stem.pos(optional)Records the position of the stem in relation to the note head(s). Value conforms to data.STEMPOSITION.
<att.stems>direct children@stem.pos
stem.sameas(optional)Points to a note element in a different layer whose stem is shared. The linked notes should be rendered like a chord though they are part of different layers. Value conforms to data.URI.
<att.stems>direct children@stem.sameas
stem.visible(optional)Determines whether a stem should be displayed. Value conforms to data.BOOLEAN.
<att.stems>direct children@stem.visible
stem.with(optional)Contains an indication of which staff a note or chord that logically belongs to the current staff should be visually placed on; that is, the one above or the one below. Value conforms to data.NEIGHBORINGLAYER.
<att.stems>att.stems.cmn@stem.with
stem.x(optional)Records the output x coordinate of the stem’s attachment point. Value is a decimal number.
<att.stems>direct children@stem.x
stem.y(optional)Records the output y coordinate of the stem’s attachment point. Value is a decimal number.
<att.stems>direct children@stem.y
stem.dir(optional)Describes the direction of a stem. Value conforms to data.STEMDIRECTION.
stem.len(optional)Encodes the stem length. Value conforms to data.MEASUREMENTUNSIGNED.
stem.mod(optional)Encodes any stem "modifiers"; that is, symbols rendered on the stem, such as tremolo or Sprechstimme indicators. Value conforms to data.STEMMODIFIER.
stem.pos(optional)Records the position of the stem in relation to the note head(s). Value conforms to data.STEMPOSITION.
stem.sameas(optional)Points to a note element in a different layer whose stem is shared. The linked notes should be rendered like a chord though they are part of different layers. Value conforms to data.URI.
stem.visible(optional)Determines whether a stem should be displayed. Value conforms to data.BOOLEAN.
stem.x(optional)Records the output x coordinate of the stem’s attachment point. Value is a decimal number.
stem.y(optional)Records the output y coordinate of the stem’s attachment point. Value is a decimal number.
(MEI.cmn) Attributes that describe the properties of stemmed features; that is, chords and notes.
stem.with(optional)Contains an indication of which staff a note or chord that logically belongs to the current staff should be visually placed on; that is, the one above or the one below. Value conforms to data.NEIGHBORINGLAYER.
(MEI.mensural) Attributes that describe the properties of stemmed features specific to mensural repertoires.
stem.form(optional)Records the form of the stem. Value conforms to data.STEMFORM.mensural.
Common Music Notation (CMN) repertoire component declarations.
stem.with(optional)Contains an indication of which staff a note or chord that logically belongs to the current staff should be visually placed on; that is, the one above or the one below. Value conforms to data.NEIGHBORINGLAYER.
Mensural repertoire component declarations.
stem.form(optional)Records the form of the stem. Value conforms to data.STEMFORM.mensural.
Component declarations that are shared between two or more modules.
stem.dir(optional)Describes the direction of a stem. Value conforms to data.STEMDIRECTION.
stem.len(optional)Encodes the stem length. Value conforms to data.MEASUREMENTUNSIGNED.
stem.mod(optional)Encodes any stem "modifiers"; that is, symbols rendered on the stem, such as tremolo or Sprechstimme indicators. Value conforms to data.STEMMODIFIER.
stem.pos(optional)Records the position of the stem in relation to the note head(s). Value conforms to data.STEMPOSITION.
stem.sameas(optional)Points to a note element in a different layer whose stem is shared. The linked notes should be rendered like a chord though they are part of different layers. Value conforms to data.URI.
stem.visible(optional)Determines whether a stem should be displayed. Value conforms to data.BOOLEAN.
stem.x(optional)Records the output x coordinate of the stem’s attachment point. Value is a decimal number.
stem.y(optional)Records the output y coordinate of the stem’s attachment point. Value is a decimal number.
Available at
ambNoteHighest or lowest pitch in a score, staff, or layer.
chordA simultaneous sounding of two or more notes in the same layer *with the same duration*.
noteA single pitched event.
Component declarations that are shared between two or more modules.
ambNoteHighest or lowest pitch in a score, staff, or layer.
chordA simultaneous sounding of two or more notes in the same layer *with the same duration*.
noteA single pitched event.
Constraints

@stem.sameas attribute should have content.
The value in @stem.sameas should correspond to the @xml:id attribute of the linked note element of a different layer.
The linked notes by @stem.sameas should have the same @dur values.

Declaration
<classSpec ident="att.stems" module="MEI.shared" type="atts">
<desc xml:lang="en">Attributes that describe the properties of stemmed features; that is, chords and notes.</desc>
<classes>
<memberOf key="att.stems.cmn"/>
<memberOf key="att.stems.mensural"/>
</classes>
<attList>
<attDef ident="stem.dir" usage="opt">
<desc xml:lang="en">Describes the direction of a stem.</desc>
<datatype>
<rng:ref name="data.STEMDIRECTION"/>
</datatype>
</attDef>
<attDef ident="stem.len" usage="opt">
<desc xml:lang="en">Encodes the stem length.</desc>
<datatype>
<rng:ref name="data.MEASUREMENTUNSIGNED"/>
</datatype>
</attDef>
<attDef ident="stem.mod" usage="opt">
<desc xml:lang="en">Encodes any stem "modifiers"; that is, symbols rendered on the stem, such as tremolo or Sprechstimme indicators.</desc>
<datatype>
<rng:ref name="data.STEMMODIFIER"/>
</datatype>
</attDef>
<attDef ident="stem.pos" usage="opt">
<desc xml:lang="en">Records the position of the stem in relation to the note head(s).</desc>
<datatype>
<rng:ref name="data.STEMPOSITION"/>
</datatype>
</attDef>
<attDef ident="stem.sameas" usage="opt">
<desc xml:lang="en">Points to a note element in a different layer whose stem is shared. The linked notes should be rendered like a chord though they are part of different layers. </desc>
<datatype maxOccurs="1">
<rng:ref name="data.URI"/>
</datatype>
<constraintSpec ident="check_stem.sameasTarget" scheme="schematron">
<constraint>
<sch:rule context="@stem.sameas">
<sch:let name="layer.n" value="self::node()/ancestor::mei:layer/@n"/>
<sch:let name="ref.id" value="substring(.,2)"/>
<sch:assert role="warning" test="not(normalize-space(.) eq '')">@stem.sameas attribute should have content.</sch:assert>
<sch:assert role="warning" test="substring(.,2)=//mei:note[not(ancestor::mei:layer/@n=$layer.n)]/@xml:id"> The value in @stem.sameas should correspond to the @xml:id attribute of the linked note element of a different layer.</sch:assert>
<sch:assert role="warning" test="../@dur=//mei:note[@xml:id=$ref.id]/@dur"> The linked notes by @stem.sameas should have the same @dur values. </sch:assert>
</sch:rule>
</constraint>
</constraintSpec>
</attDef>
<attDef ident="stem.visible" usage="opt">
<desc xml:lang="en">Determines whether a stem should be displayed.</desc>
<datatype>
<rng:ref name="data.BOOLEAN"/>
</datatype>
</attDef>
<attDef ident="stem.x" usage="opt">
<desc xml:lang="en">Records the output x coordinate of the stem’s attachment point.</desc>
<datatype>
<rng:data type="decimal"/>
</datatype>
</attDef>
<attDef ident="stem.y" usage="opt">
<desc xml:lang="en">Records the output y coordinate of the stem’s attachment point.</desc>
<datatype>
<rng:data type="decimal"/>
</datatype>
</attDef>
</attList>
</classSpec>
MEI Version: 5.0(#eb14650)