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3.5. Web Map Tile Service (WMTS)
The 1.0.0 WMTS standard implemented in QGIS Server provides a HTTP interface to request tiled map images generated from a QGIS project. A typical WMTS request defined the QGIS project to use, some WMS parameters like layers to render, as well as tile parameters.
Specifications document of the service:
Standartinės QGIS Serverio teikiamos užklausos:
Užklausa |
Aprašymas |
---|---|
Returns XML metadata with information about the server |
|
Returns a tile |
|
Grąžina duomenis (geometriją ir reikšmes) pikselio vietai |
3.5.1. GetCapabilities
Standard parameters for the GetCapabilities request according to the OGC WMTS 1.0.0 specifications:
Parameter |
Required |
Aprašymas |
---|---|---|
Yes |
Name of the service (WMTS) |
|
Yes |
Name of the request (GetCapabilities) |
In addition to the standard ones, QGIS Server supports the following extra parameters:
Parameter |
Required |
Aprašymas |
---|---|---|
Yes |
QGIS project file |
URL example:
http://localhost/?
SERVICE=WMTS
&REQUEST=GetCapabilities
&MAP=/home/qgis/projects/world.qgs
3.5.2. GetTile
Standard parameters for the GetTile request according to the OGC WMTS 1.0.0 specifications:
Parameter |
Required |
Aprašymas |
---|---|---|
Yes |
Name of the service (WMTS) |
|
Yes |
Name of the request (GetTile) |
|
Yes |
Layer identifier |
|
Yes |
Output format of the tile |
|
Yes |
Name of the pyramid |
|
Yes |
Meshing |
|
Yes |
Row coordinate in the mesh |
|
Yes |
Column coordinate in the mesh |
In addition to the standard ones, QGIS Server supports the following extra parameters:
Parameter |
Required |
Aprašymas |
---|---|---|
Yes |
QGIS project file |
URL example:
http://localhost/?
SERVICE=WMTS
&REQUEST=GetTile
&MAP=/home/qgis/projects/world.qgs
&LAYER=mylayer
&FORMAT=image/png
&TILEMATRIXSET=EPSG:4326
&TILEROW=0
&TILECOL=0
FORMAT
This parameter may be used to specify the format of tile image. Available values are:
jpg
jpeg
image/jpeg
image/png
If the FORMAT
parameter is different from one of these values, then
the default format PNG is used instead.
TILEMATRIXSET
This parameter defines the CRS to use when computing the underlying
pyramid. Format: EPSG:XXXX
.
TILEMATRIX
This parameter allows to define the matrix to use for the output tile.
TILEROW
This parameter allows to select the row of the tile to get within the matrix.
TILECOL
This parameter allows to select the column of the tile to get within the matrix.
3.5.3. GetFeatureInfo
Standard parameters for the GetFeatureInfo request according to the OGC WMTS 1.0.0 specification:
Parameter |
Required |
Aprašymas |
---|---|---|
Yes |
Name of the service (WMTS) |
|
Yes |
Name of the request (GetFeatureInfo) |
|
Yes |
Layer identifier |
|
No |
Output format |
|
No |
X coordinate of a pixel |
|
No |
Y coordinate of a pixel |
|
Yes |
Name of the pyramid |
|
Meshing |
||
Yes |
Row coordinate in the mesh |
|
Yes |
Column coordinate in the mesh |
In addition to the standard ones, QGIS Server supports the following extra parameters:
Parameter |
Required |
Aprašymas |
---|---|---|
Yes |
QGIS project file |
URL example:
http://localhost/?
SERVICE=WMTS
&REQUEST=GetFeatureInfo
&MAP=/home/qgis/projects/world.qgs
&LAYER=mylayer
&INFOFORMAT=image/html
&I=10
&J=5
INFOFORMAT
This parameter allows to define the output format of the result. Available values are:
text/xml
text/html
text/plain
application/vnd.ogc.gml
The default value is text/plain
.
I
This parameter allows to define the X coordinate of the pixel for which we want to retrieve underlying information.
J
This parameter allows to define the Y coordinate of the pixel for which we want to retrieve underlying information.