JpMeshCodeExtractor

Extracts Japanese Standard Mesh Code of the mesh containing a representative location (First Vertex, Center of Bounding Box, or Center of Gravity) of the input feature.

You can select the representative location with "Location to Extract Mesh Code" parameter.

If the input feature doesn't have coordinates, it will be output from the <Rejected> port.

Notes:

This transformer is valid only for a geographic data on Japanese area with LL coordinate system.

This transformer rounds the coordinate values into milliseconds when computing mesh code. So an computational error may not be avoided if the coordinate is very close to a mesh boundary.

This transformer supports these Japanese standard mesh types.

Primary Standard Mesh - spacing (W x H): 3600sec. x 2400sec., mesh code format: "AABB"

Secondary Standard Mesh - spacing (W x H): 450sec. x 300sec., mesh code format: "AABB-CD"

Tertiary Standard Mesh - spacing (W x H): 45sec. x 30sec., mesh code format: "AABB-CD-EF"

1/2 Subdivided Mesh - spacing (W x H): 22.5sec. x 15sec., mesh code format: "AABB-CD-EF-G"

1/4 Subdivided Mesh - spacing (W x H): 11.25sec. x 7.5sec., mesh code format: "AABB-CD-EF-G-H"

1/8 Subdivided Mesh - spacing (W x H): 5.625sec. x 3.75sec., mesh code format: "AABB-CD-EF-G-H-I"

1/10 Subdivided Mesh - spacing (W x H): 4.5sec. x 3sec., mesh code format: "AABB-CD-EF-XY

A - I, X and Y in the formats represents a digit determined by the followings.

AA = south end latitude (degrees) of the primary mesh * 1.5

BB = west end longitude (degrees) of the primary mesh - 100

C = row index in the parent primary mesh (0:south - 7:north end)

D = column index in the parent primary mesh (0:west - 7:east end)

E = row index in the parent secondary mesh (0:south - 9:north end)

F = column index in the parent secondary mesh (0:west - 9:east end)

G = 1:left-bottom, 2:right-bottom, 3:left-top, 4:right-top in the parent tertiary mesh

H = 1:left-bottom, 2:right-bottom, 3:left-top, 4:right-top in the parent 1/2 subdivided mesh

I = 1:left-bottom, 2:right-bottom, 3:left-top, 4:right-top in the parent 1/4 subdivided mesh

X = row index in the parent tertiary mesh (0:south - 9:north end)

Y = column index in the parent tertiary mesh (0:west - 9:east end)