24.1.18.3. 将地图转换为栅格
Creates a raster image of map canvas content.
A map theme can be selected to render a
predetermined set of layers with a defined style for each layer.
Alternatively, a single layer can be selected if no map theme is set.
If neither map theme nor layer is set, the current map content will be
rendered.
The minimum extent entered will internally be extended to be a
multiple of the tile size.
参数
标注
名称
类型
描述
Minimum extent to render (xmin, xmax, ymin, ymax)
EXTENT
[范围]
Specify the extent of the output raster layer.
It will internally be extended to a multiple of the tile size.
Available methods are:
Calculate from layer…: uses extent of a layer loaded in the current project
Calculate from layout map…: uses extent of a layout map item
in the active project
Calculate from bookmark…: uses extent of a saved bookmark
Use map canvas extent
Draw on canvas: click and drag a rectangle delimiting the area to take into account
Enter the coordinates as xmin, xmax, ymin, ymax
瓦片尺寸
TILE_SIZE
[numeric: integer]
默认值: 1024
Size of the tile of the output raster layer. Minimum value: 64.
Map units per pixel
MAP_UNITS_PER_PIXEL
[numeric: double]
Default: 100.0
Pixel size (in map units). Minimum value: 0.0
Make background transparent
MAKE_BACKGROUND_TRANSPARENT
[boolean]
Default: False
Allows exporting the map with a transparent background.
Outputs an RGBA (instead of RGB) image if set to True.
Map theme to render
可选
MAP_THEME
[enumeration]
Use an existing map theme for the
rendering.
Single layer to render
可选
LAYER
[enumeration]
Choose a single layer for the rendering
Output layer
OUTPUT
[栅格]
默认: [保存到临时文件]
Specification of the output raster. One of:
保存到临时文件
保存到文件…
输出
标注
名称
类型
描述
Output layer
OUTPUT
[栅格]
Output raster layer
Python代码
Algorithm ID: native:rasterize
import processing
processing.run("algorithm_id", {parameter_dictionary})
当你在数据处理工具箱某个算法前悬停时，算法 id 将会展现。*参数字*将会提供参数的名称与数值。参考详见`数据处理_控制台`以获取如何从Python控制台中运行数据处理算法。