query: Adding a counter column for a set of similar rows in R
positive_passages.docid: 14739
positive_passages.text: How can I rank observations in-group faster?
negative_passages.docid: 64783
negative_passages.text: Excel count all rows that contain certain values for certain fields
negative_passages.docid: 96906
negative_passages.text: Calculating statistics on subsets of data
negative_passages.docid: 56874
negative_passages.text: How can I remove all duplicates so that NONE are left in a data frame?
negative_passages.docid: 7821
negative_passages.text: Finding ALL duplicate rows, including "elements with smaller subscripts"
negative_passages.docid: 59861
negative_passages.text: Counting number of points in polygon using R?
negative_passages.docid: 44363
negative_passages.text: counting number of specific string in each row
negative_passages.docid: 56436
negative_passages.text: Creating co-occurrence matrix
negative_passages.docid: 6679
negative_passages.text: Counting number of subsets which contain a specific element
negative_passages.docid: 77897
negative_passages.text: transpose sets of three rows to columns
negative_passages.docid: 10182
negative_passages.text: Combining values in one column (or part) when values in another column (or part) match
negative_passages.docid: 143058
negative_passages.text: Counting unique records across 2 columns and computing a score based on boolean values
negative_passages.docid: 18690
negative_passages.text: How to make an Excel formula which totals several adjacent rows based on cell values
negative_passages.docid: 149518
negative_passages.text: Adding counts of a factor to a dataframe
negative_passages.docid: 116258
negative_passages.text: Count number of occurrences of a pattern on same line
negative_passages.docid: 104296
negative_passages.text: How can I make a SUM of cells that match a specific criteria?
negative_passages.docid: 151527
negative_passages.text: Using R statistics add a group sum to each row