object.size(utils)
object.size()所属R语言包：utils
Report the Space Allocated for an Object
报告为对象分配空间
译者：生物统计家园网 机器人LoveR
描述----------Description----------
Provides an estimate of the memory that is being used to store an R object.
提供了一个正在使用的内存来存储一个R对象的估计。
用法----------Usage----------
object.size(x)
## S3 method for class 'object_size'
print(x, quote = FALSE, units = "b", ...)
参数----------Arguments----------
参数：x
An R object.
一个R对象。
参数：quote
logical, indicating whether or not the result should be printed with surrounding quotes.
逻辑，显示与否的结果，应与周边报价印刷。
参数：units
The units to be used in printing the size. Other allowed values are "Kb", "Mb", "Gb" and "auto" (see "Details"). As from R 2.14.0, "KB" etc are also accepted.
各单位要使用打印的大小。其他允许的值是"Kb"，"Mb"，"Gb"和"auto"（见“详细资料”）。 2.14.0从R"KB"等也是可以接受的。
参数：...
Arguments to be passed to or from other methods.
参数被传递到或从其他方法。
Details
详情----------Details----------
Exactly which parts of the memory allocation should be attributed to which object is not clear-cut. This function merely provides a rough indication: it should be reasonably accurate for atomic vectors, but does not detect if elements of a list are shared, for example. (Sharing amongst elements of a character vector is taken into account, but not that between character vectors in a single object.)
哪些内存分配的部分应归因于哪个对象是不明确的。这个功能只是提供了一个粗略的指示：它应该是合理的原子向量准确的，但如果没有检测到一个列表中的元素是共享的，例如。 （之间共享一个特征向量的元素考虑，但不是在一个单一的对象之间的特征向量。）
The calculation is of the size of the object, and excludes the space needed to store its name in the symbol table.
计算对象的大小，不包括其名称存储在符号表中所需的空间。
Associated space (e.g. the environment of a function and what the pointer in a EXTPTRSXP points to) is not included in the calculation.
在计算中不包括相关的空间（如环境功能和EXTPTRSXP点的指针）。
Object sizes are larger on 64-bit builds than 32-bit ones, but will very likely be the same on different platforms with the same word length and pointer size.
对象大小是64位版本比32位的大，但很可能会在不同的平台上用同一个词的长度和指针的大小相同。
units = "auto" in the print method chooses the largest units in which the result is one or more (before rounding). Values in kilobytes, megabytes or gigabytes are rounded to the nearest 0.1.
units = "auto"print方法选择的结果是一个或多个（四舍五入前）最大的单位。千字节，兆字节或千兆字节的值四舍五入的最接近的0.1。
值----------Value----------
An object of class "object_size" with a length-one double value, an estimate of the memory allocation attributable to the object in bytes.
一个类的对象"object_size"长度双重价值，估计占内存分配字节的对象。
参见----------See Also----------
Memory-limits for the design limitations on object size.
Memory-limits为设计对象的大小限制。
举例----------Examples----------
object.size(letters)
object.size(ls)
print(object.size(library), units = "auto")
## find the 10 largest objects in the base package[＃在基础包的10个最大的对象。]
z <- sapply(ls("package:base"), function(x)
object.size(get(x, envir = baseenv())))
as.matrix(rev(sort(z))[1:10])
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注：
注1：为了方便大家学习，本文档为生物统计家园网机器人LoveR翻译而成，仅供个人R语言学习参考使用，生物统计家园保留版权。
注2：由于是机器人自动翻译，难免有不准确之处，使用时仔细对照中、英文内容进行反复理解，可以帮助R语言的学习。
注3：如遇到不准确之处，请在本贴的后面进行回帖，我们会逐渐进行修订。
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发表于 2012-2-16 20:05:54
