Y coordinate, expressed in the inner data coordinate system , of the current tie point.

Used to provide registration points (tie points) for Tie-Point Geopositioning. Tie points are point positions known in two different coordinate systems : the Coordinate Reference System of the dataset (in most of the cases a projected coord. Sys.) and in the internal, native, data coordinate system (sucha as rows and columns for raster data).

TIE_POINT_DATA_Y gives the XYcoordinate of a tie point in the data coordinate system space (usually, this is the row index of pixel coordinates). Pixel coordinates start at 0.0, 0.0 or 1.0, 1.0 if PIXEL_ORIGIN is set to 1 (this particular location is either the top-left corner of the pixel or the center of the upper-left pixel of the raster, depending on the value of RASTER_CS_TYPE). The row index (DATA_Y) coordinates are increasing downward.

Please refer to the Dimap Documentation about Geopositioning schemes.

Example :
 
<Tie_Point>
  <TIE_POINT_CRS_X unit='M'>103456.0</TIE_POINT_CRS_X>
  <TIE_POINT_CRS_Y unit='M'>1467379.0</TIE_POINT_CRS_Y>
  <TIE_POINT_DATA_X>23.5</TIE_POINT_DATA_X>
  <TIE_POINT_DATA_Y>123.34</TIE_POINT_DATA_Y>
</Tie_Point>

Datatype : t_TIE_POINT_DATA_Y (based on Real)

Real (based on xsd:double)

Possible parent(s)

Tie_Point