refY

TherefY attribute defines the y coordinate of an element's reference point.

You can use this attribute with the following SVG elements:

marker

For<marker>,refY defines the y coordinate of the marker's reference point, which is to be placed exactly at the marker's position on the shape.

Value	`<length-percentage>` \|`<number>` \|`top` \|`center` \|`bottom`
Default value	`0`
Animatable	Yes

<length-percentage>

Lengths are interpreted as being in the coordinate system of the marker contents, after application of theviewBox andpreserveAspectRatio attributes.

Percentage values are interpreted as being a percentage of theviewBox height.

<number>

Numbers are interpreted as being in the coordinate system of the marker contents, after application of theviewBox andpreserveAspectRatio attributes.

top

The reference point of the marker is placed at the top edge of the shape.

center

The reference point of the marker is placed at the vertical center of the shape.

bottom

The reference point of the marker is placed at the bottom edge of the shape.

symbol

For<symbol>,refY defines the y coordinate of the symbol, which is defined by the cumulative effect of they attribute and any transformations on the<symbol> and its host<use> element.

Unlike other positioning attributes,refY is interpreted as being in the coordinate system of the symbol contents, after application of theviewBox andpreserveAspectRatio attributes. If the attribute is not specified, no vertical adjustment is made, and the top side of the symbol's rectangular viewport region (regardless of theviewBox coordinate) is positioned at the y coordinate.