rsaga.wetness.index(RSAGA)
rsaga.wetness.index()所属R语言包:RSAGA
SAGA Modules SAGA Wetness Index
SAGA模块SAGA湿度指数
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Calculate the SAGA Wetness Index (SWI), a modified
计算SAGA湿度指数(SWI),修改后的
用法----------Usage----------
rsaga.wetness.index( in.dem, out.wetness.index,
out.carea, out.cslope, out.mod.carea, t.param, ...)
参数----------Arguments----------
参数:in.dem
input: digital elevation model (DEM) as SAGA grid file (default file extension: .sgrd)
输入:数字高程模型(DEM)SAGA的网格文件(默认文件扩展名:.sgrd)
参数:out.wetness.index
output (optional): wetness index grid. Existing files of the same name will be overwritten!
输出(可选):湿润指数的网格。相同名称的现有文件将被覆盖!
参数:out.carea
output (optional): catchment area
输出(可选):集水区
参数:out.cslope
output (optional): catchment slope
输出(可选):流域坡
参数:out.mod.carea
output (optional): modified catchment area
输出(可选):修改集水区
参数:t.param
positive numeric value (optional): undocumented
正数值(可选):无证
参数:...
optional arguments to be passed to rsaga.geoprocessor, including the env RSAGA geoprocessing environment
可选参数传递给rsaga.geoprocessor,包括env RSAGAGEO处理环境
Details
详细信息----------Details----------
The SAGA Wetness Index is similar to the Topographic Wetness Index (TWI), but it is based on a modified catchment area calculation (out.mod.carea), which does not treat the flow as a thin film as done in the calculation of catchment areas in conventional algorithms. As a result, the SWI tends to assign a more realistic, higher potential soil wetness than the TWI to grid cells situated in valley floors with a small
SAGA湿度指数是类似的地形湿度指数(TWI),但它的基础上修改后的集水面积计算(out.mod.carea),不会将流成薄膜,在计算集水在传统算法的区域。因此,SWI往往会指定一个更现实的,潜在的土壤湿度较高,比TWI位于谷底的网格单元的小
值----------Value----------
The type of object returned depends on the intern argument passed to the rsaga.geoprocessor. For intern=FALSE it is a numerical error code (0: success), or otherwise (default)
返回的对象的类型取决于intern参数传递的rsaga.geoprocessor。对于intern=FALSE它是一个数字错误代码(0:成功),或以其他方式(默认)
注意----------Note----------
This function uses module 15 from the SAGA library
此功能使用15的SAGA库的模块
(作者)----------Author(s)----------
Alexander Brenning (R interface), Juergen Boehner and
Olaf Conrad (SAGA module)
参考文献----------References----------
Ringeler, A., Selige, T. (2002): Soil Regionalisation by Means of Terrain Analysis and Process Parameterisation. In: Micheli, E., Nachtergaele, F., Montanarella, L. (ed.): Soil Classification 2001. European Soil Bureau, Research
参见----------See Also----------
rsaga.parallel.processing,
rsaga.parallel.processing,
实例----------Examples----------
## Not run: [#不运行:]
# using SAGA grids:[使用SAGA格:]
rsaga.wetness.index("dem.sgrd","swi.sgrd")
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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