r - Efficiently collapse a matrix - Stack Overflow
Jun 25, 2016 · Here's what the new matrix based on mat will look like: "A","D","A,D","W","D"), nrow=nrow(mat),ncol=length(cnames)) a1 b1 . Any idea what would be an efficient and elegant way to achieve this? Step 1: Matrix column pivoting. Step 2.1: Column name decomposition. Step 2.2: Grouping index generation. Step 2.3: Conditional collapsed pasting.
Show Matrix Row Headers when Collapsed (Disable Collapse?)
Jun 10, 2022 · Question: What's the best way to "collapse" a matrix hierarchy of multiple rows, but keep the headers of those rows visible. Scenario: In a Matrix with stepped layout turned off, I have 4 rows and one value.
Expanding and collapsing values in a matrix
Sep 21, 2020 · I have a matrix in Power Bi that has rows by a certain category and column as another category as well. And then i have 4 measures in my values. Is there a way to show only one measure and then collapse the rest?
arrays - Collapsing matrix into columns - Stack Overflow
Nov 9, 2016 · nRows = size(matrix, 1); nBlocks = size(matrix, 2) / 3; matrix = reshape(matrix, [nRows 3 nBlocks]); matrix = permute(matrix, [1 3 2]); matrix = reshape(matrix, [nRows * nBlocks 1 3]); matrix = reshape(matrix(:), [nRows * nBlocks 3]);
Collapse matrix to vector and replace values with column names
Dec 12, 2018 · One way to get it is to replace each TRUE in each column with column name and each FALSE with NA or "". Then merge all columns across rows with paste (). I'm not quite sure how to do this. Any help is highly appreciated. For each row return the column name of the largest value. Use rowSums to find rows with two FALSE.
Solved: Expand/Collapse row in table/matrix to group miles ...
Mar 2, 2020 · I am trying to create a Power BI table or matrix (whichever works) where the main item is displayed with an expandable + sign on the side that will subsequently display all the milestones underneath. Currently I'm pulling data from an Excel table that just has the milestones underneath the main item as individual rows.
collapse's Handling of R Objects • collapse - GitHub Pages
collapse handles R objects in a preserving and fairly intelligent manner, allowing seamless compatibility with many common data classes in R, and statistical workflows that preserve attributes (labels, units, etc.) of the data. This is implemented through general principles and some specific considerations/exemptions mostly implemented in C ...
collapse_matrix function - RDocumentation
This function is called by collapse_omega() and collapse_sigma() to convert multiple matrix blocks into a single matrix block. This "collapsing" of the matrix list is irreversible.
Introduction to collapse • collapse - GitHub Pages
collapse is a high-performance package that extends and enhances the data-manipulation capabilities of R and existing popular packages (such as dplyr, data.table, and matrix packages).
Fast Subsetting Matrix-Like Objects — fsubset • collapse
An object similar to .x/x containing just the selected elements (for a vector), rows and columns (for a matrix or data frame).
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