spam-class(spam)
spam-class()所属R语言包：spam
Class "spam"
类“垃圾邮件”
译者：生物统计家园网 机器人LoveR
描述----------Description----------
The spam class is a representation of sparse matrices.
spam类是一个稀疏矩阵表示。
类对象----------Objects from the Class----------
Objects can be created by calls of the form new("spam", entries, colindices, rowpointes, dimension). The standard "old Yale sparse format" is used to store sparse matrices.<br> The matrix x is stored in row form. The first element of row i is x@rowpointers[i]. The length of row i is determined by x@rowpointers[i+1]-x@rowpointers[i]. The column indices of x are stored in the x@colindices vector. The column index for element x@entries[k] is
可以创建对象通过调用的形式new("spam", entries, colindices, rowpointes, dimension)。标准的“旧耶鲁sparse格式”是用来存储稀疏矩阵。参考矩阵x存储行中的形式。行i的第一个元素是x@rowpointers[i]。行i的长度是由x@rowpointers[i+1]-x@rowpointers[i]。 x列索引存储在x@colindices矢量。列索引的元素x@entries[k]
插槽----------Slots----------
entries: Object of class "numeric" contains the
entries：对象的类"numeric"包含
colindices: Object of class "integer" ordered indices
colindices：类的对象"integer"有序索引
rowpointers: Object of class "integer" pointer to the beginning
rowpointers：对象类"integer"指针开始
dimension: Object of class "integer" specifying
dimension：类的对象"integer"指定
方法----------Methods----------
as.matrix signature(x = "spam"): transforming a sparse
as.matrix signature(x = "spam")：转换稀疏
as.spam signature(x = "spam"):
as.spamsignature(x = "spam")：
[<- signature(x = "spam", i,j, value): assigning a
[< - signature(x = "spam", i,j, value)：分配
[ signature(x = "spam", i, j): subsetting a
[signature(x = "spam", i, j)：子集一
%*% signature(x, y): matrix multiplication, all combinations of sparse with full
％*％signature(x, y)：矩阵相乘，稀疏的所有组合
c signature(x = "spam"): vectorizes the sparse matrix and takes account of the zeros. Hence
Csignature(x = "spam")：矢量稀疏矩阵，并考虑到零。故
cbind signature(x = "spam"): binds sparse matrices, see cbind for details.
CBINDsignature(x = "spam")：稀疏矩阵绑定，请参阅cbind的详细信息。
chol signature(x = "spam"):
哲signature(x = "spam")：
diag signature(x = "spam"):
诊断signature(x = "spam")：
dim<- signature(x = "spam"): truncates or augments
昏暗< - signature(x = "spam")：截断或增强
dim signature(x = "spam"): gives the dimension of the
昏暗的signature(x = "spam")：给出的尺寸
image signature(x = "spam"):
图像signature(x = "spam")：
display signature(x = "spam"):
显示signature(x = "spam")：
length<- signature(x = "spam"): Is not implemented and
长度< - “signature(x = "spam")：不落实，
length signature(x = "spam"): gives the number of
长度signature(x = "spam")给出的数字
lower.tri signature(x = "spam"): see lower.tri for details.
lower.tri signature(x = "spam")：看lower.tri的详细信息。
Math signature(x = "spam"): see Math for details.
数学signature(x = "spam")：见Math的详细信息。
Math2 signature(x = "spam"): see Math2 for details.
MATH2signature(x = "spam")：看Math2的详细信息。
norm signature(x = "spam"): calculates the norm of a matrix.
规范signature(x = "spam")：计算矩阵的规范。
plot signature(x = "spam", y): same functionality as
图signature(x = "spam", y)：相同的功能
print signature(x = "spam"): see print for details.
打印signature(x = "spam")：看到print的详细信息。
rbind signature(x = "spam"): binds sparse
rbind signature(x = "spam")：结合稀疏
solve signature(a = "spam"): see solve for details.
解决signature(a = "spam")：看到solve的详细信息。
summary signature(object = "spam"): small summary
总结signature(object = "spam")：小总结
Summary signature(x = "spam"): All functions of the Summary class (like min, max, range...) operate on the vector x@entries and return the result thereof. See Examples or Summary for details.
摘要signature(x = "spam")的Summary类（如min，max，range...）向量x@entries：所有功能和其结果返回。的示例，请参见Summary的详细信息。
t signature(x = "spam"): transpose of a sparse matrix.
Tsignature(x = "spam")：一个稀疏矩阵的转置。
upper.tri signature(x = "spam"): see lower.tri for details.
upper.tri signature(x = "spam")：看lower.tri的详细信息。
Details
详细信息----------Details----------
The compressed sparse row (CSR) format is often described with the vectors a, ia, ja. To be a bit more comprehensive, we have chosen longer slot names.
压缩稀疏行（CSR）的格式通常被描述的向量a，ia，ja。要更全面一点，我们选择了较长的插槽名称。
注意----------Note----------
The slots colindices and rowpointers are tested for proper integer assignments. This is not true for entries.
插槽colindices和rowpointers测试适当的整数分配。为entries，这是不正确的。
（作者）----------Author(s)----------
Reinhard Furrer, some of the Fortran code is based on A. George,
J. Liu, E. S. Ng, B.W Peyton and Y. Saad (alphabetical)
实例----------Examples----------
showMethods("as.spam")
smat <- diag.spam(runif(15))
range(smat)
cos(smat)
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 2012-9-30 12:23:58
