Extract.tess(spatstat)
Extract.tess()所属R语言包:spatstat
Extract or Replace Subset of Tessellation
提取或替换子集的Tessellation(曲面细分)
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Extract, change or delete a subset of the tiles of a tessellation, to make a new tessellation.
解压缩,更改或删除的瓷砖镶嵌,使一个新的Tessellation(曲面细分)的一个子集。
用法----------Usage----------
## S3 method for class 'tess'
x[...]
## S3 replacement method for class 'tess'
x[...] <- value
参数----------Arguments----------
参数:x
A tessellation (object of class "tess").
镶嵌(类的对象"tess")。
参数:...
One argument that specifies the subset to be extracted or changed. Any valid format for the subset index in a list.
一个参数,该参数指定的子集提取或改变。任何有效的格式的子集列表中的索引。
参数:value
Replacement value for the selected tiles of the tessellation. A list of windows (objects of class "owin") or NULL.
所选的瓷砖镶嵌的替换值。列表窗口(对象的类"owin")或NULL。
Details
详细信息----------Details----------
A tessellation (object of class "tess", see tess) is effectively a list of tiles (spatial regions) that cover a spatial region. The subset operator [.tess extracts some of these tiles and forms a new tessellation, which of course covers a smaller region than the original.
类的对象,一个Tessellation(曲面细分)("tess",看到tess)是一种有效的的瓷砖空间区域覆盖的空间区域。的子集操作符[.tess这些瓷砖提取出来,并形成了一个新的Tessellation(曲面细分),课程涵盖较小的区域比原来的。
The replacement operator changes the selected tiles. The replacement value may be either NULL (which causes the selected tiles to be removed from x) or a list of the same length as the selected subset. The entries of value may be windows (objects of class "owin") or NULL to indicate that the corresponding tile should be deleted.
更换运营商改变所选的瓷砖。替换value可能是NULL(这会导致从x)或作为选定的子集具有相同的长度的列表中删除所选的瓷砖。 value的条目可以是窗口(对象类"owin")或NULL表明应删除对应的瓦片。
Generally it does not make sense to replace a tile in a tessellation with a completely different tile, because the tiles are expected to fit together. However this facility is sometimes useful for making small adjustments to polygonal tiles.
一般来说,不更换瓷砖在一个完全不同的瓷砖镶嵌的意义,因为瓷砖结合在一起。然而,这个设施进行小的调整多边形砖有时是有用的。
值----------Value----------
A tessellation (object of class "tess").
镶嵌(类的对象"tess")。
(作者)----------Author(s)----------
Adrian Baddeley
<a href="mailto:Adrian.Baddeley@csiro.au">Adrian.Baddeley@csiro.au</a>
<a href="http://www.maths.uwa.edu.au/~adrian/">http://www.maths.uwa.edu.au/~adrian/</a>
and Rolf Turner
<a href="mailto:r.turner@auckland.ac.nz">r.turner@auckland.ac.nz</a>
参见----------See Also----------
tess,
tess,
实例----------Examples----------
A <- tess(xgrid=0:4, ygrid=0:3)
B <- A[c(1, 3, 7)]
E <- A[-1]
A[c(2, 5, 11)] <- NULL
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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