In addition to the generic FME feature attributes that FME Workbench adds to all features (see About Feature Type Attributes), this format also adds format-specific attributes (Format Attributes).
Features read from an MBTiles file consist of geometry and a series of attribute values. The attribute names are as defined in the workspace.
String attribute values are stored in UTF-8 encoding.
|
Attribute Name |
Contents |
|---|---|
|
mvt_id |
Unique identifier for each source feature. |
|
mvt_tile_column |
An integer value indicating the tile number in the X direction, according to the tiling scheme, for the tile containing the current feature. |
|
mvt_tile_row |
An integer value indicating the tile number in the Y direction, according to the tiling scheme, for the tile containing the current feature. |
|
mvt_type |
The format geometry type for the feature. See Geometry. |
|
mvt_zoom_level |
An integer value between 0 and 22 that indicates the zoom level for the tile containing the current feature. |
Attribute Type Mapping
|
Attribute Type |
FME Attribute Type |
|---|---|
|
string |
fme_buffer |
|
string |
fme_xml |
|
string |
fme_json |
|
string |
fme_varchar(width) |
|
string |
fme_char(width) |
|
string |
fme_binarybuffer |
|
string |
fme_varbinary(width) |
|
string |
fme_binary(width) |
|
string |
fme_datetime |
|
string |
fme_date |
|
string |
fme_time |
|
double |
fme_real64 |
|
float |
fme_real32 |
|
double |
fme_decimal(width, decimal) |
|
int64 |
fme_int64 |
|
int64 |
fme_int32 |
|
int64 |
fme_int16 |
|
int64 |
fme_int8 |
|
double |
fme_uint64 |
|
int64 |
fme_uint32 |
|
int64 |
fme_uint16 |
|
int64 |
fme_uint8 |
|
bool |
fme_boolean |
Geometry
The geometry of MBTiles Vector Tiles features may be identified by the mvt_type attribute and correspond to 2D vector geometries. The valid values for this attribute are:
|
mvt_type |
Description |
|---|---|
|
wkb_line |
2D Linear feature. |
|
wkb_multi_line |
2D Feature with multiple line geometries. |
|
wkb_multi_point |
2D Feature with multiple heterogeneous point geometries. |
|
wkb_multi_polygon |
2D Feature with multiple polygon geometries. |
|
wkb_point |
2D Point feature. |
|
wkb_polygon |
2D Simple polygon or donut feature. |
|
wkb_unknown |
An unsupported geometry type other than those listed above. This may include optional or experimental geometry types. |
|
wkb_none |
Absence of geometry. Can occur on read if there is a parsing error in the geometry |
For more information about the MBTiles file specification, see the Mapbox MBTiles Specification.
For more information about vector tile data that can be stored in the tiles table, see the Mapbox Vector Tile Specification.