Processor P1 collects the next N/P rows of the matrix and so on. Processors remove duplicate entries when they collect adjacency list entries. The ... R Ponnusamy,J Saltz,Choudhury, A,... - 《IEEE Transactions on Parallel & Distributed Systems》 被引量: 157发表: 1993年 Mid‐latitude lida...
一、R语言中的矩阵matrix是一个二维的数组array,因此数组array的一些操作它也适用。 ①它与array相比,特有的是矩阵的一些运算,例如: 求维度:dim(A) 转置:t(A) 求行列式:det(A) 矩阵相乘:x%*%y 对角运算:diag(A) 求逆:solve(A,b) 求特征值和特征向量:eigen(A) 奇异值分解:svd(A) ②在多维数组中,a...
R Programming Code:# Create a 4x3 matrix with values from 1 to 12 x = matrix(1:12, ncol=3) # Print the original matrix print("Original matrix:") print(x) # Print a message indicating the following output is a list of column-vectors print("list from the said matrix:") # Convert...
R语言能操作的数据结构有很多种,但基础的有如下5种: 原子向量(atomic vector) 矩阵(matrix) 数组(array) 数据框(data.frame) 列表(list) 其中原子向量又是最基础的一个,共有6种类型: 逻辑型(logical) 整型(integer) 数值型或双精度型(numeric或double) ...
class(obj) #向量(Vertor),数据框(Frame),矩阵(Matrix),因子(Factor)。 mode(obj) #逻辑型(Logical)、数值型(Numeric)、字符型(Character)。(因子型在mode函数下返回数值型) #数据框的模式是list,类是data.frame。 > mylist = list(a = c(1,2,3),b = c('a','b','c'),c = c(TRUE,FALSE)...
Return the current transformation matrix of the view. -or- Changes the transformation matrix on the view. (Inherited from View) ApplicationWindowToken Retrieve a unique token identifying the top-level "real" window of the window that this view is attached to. (Inherited from View) ApplyWindo...
[2]][1]12.3# Access the list element using the name of the element.>print(list_data$A_Matrix)[,1][,2][,3][1,]35-2[2,]918 操控列表元素 我们可以添加,删除和更新列表中的元素,如下图所示。我们可以增加或删除而且只能添加到列表的末尾的元素。但是可以更新任何元素。
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horizontalGradientMatrix(x:Number, y:Number, width:Number, height:Number):Matrix 返回一个框 Matrix,在绘制水平渐变时可以将其作为 rot 参数传递给 drawRoundRect() 方法。 UIComponent indexToItemRenderer(index:int):IListItemRenderer 针对数据提供程序中某个项目的索引获取项呈示器(如果存在)。 ListBase ...