I was able to unionize my 2 array sets, but I can't find the difference in sets
I am trying to compare the two sets and find the union/difference of them. The union is working, but the difference is not (output is an empty array).I used the "addAll()" function for unionizing, so I...
View ArticlePython in-place merge sort help- alternative?
I'm trying to create an in-place merge sort algorithm for handling an array. I got some help on the for loop section, but am having trouble understanding it. Is there an alternative way to approach it...
View ArticleHow to do sane "set-difference" in Ruby?
Demo (I expect result [3]):[1,2] - [1,2,3] => [] # Hmm[1,2,3] - [1,2] => [3] # I seea = [1,2].to_set => #<Set: {1, 2}>b = [1,2,3].to_set => #<Set: {1, 2, 3}>a - b =>...
View ArticleFind set_difference between set and map keys
I would like to ask if it is possible to provide an example on how I can find the difference between a set and keys of a map using set_differenceI know that another question std::set_difference is it...
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How to use Shapely for subtracting two polygons
I am not really sure how to explain this but I have 2 polygons, Polygon1 and Polygon2. These polygons overlapped with each other. How to do I get Polygon2 using Shapely without the P from Polygon1.
View ArticleEfficient algorithm for finding the non-overlapping set of two very large...
I am looking for the most efficient algorithm for comparing large set of strings that are representing possible amino acid substitutions at various positions of a 9mer peptide.As a toy example, the...
View Articleanalog of setdiff() using regular expressions
Suppose I want to exclude values matching a series of regular expressions from a character vector, in the same way that I would use setdiff() for fixed character strings, e.g.value <- c("apple pie",...
View ArticleSorting columns and adding new variables using setdiff in R
I am a researcher and R novice working with a large dataset consisting of many small excel files to be read together. I have imported these into R using the read_excel functions and have them all in a...
View ArticleHow do I find the keys in one dictionary that do not have a counterpart in...
In Python, how do I find the keys in one dictionary that do not have a counterpart in another dictionary? The practical problem is that I have a dictionary of people that enrolled and a dictionary with...
View ArticleFind integers in range which are not in a set
I need to find all IDs that are not in my table, between the min and max ID. Unfortunately MySQL has no simple way of generating sequences, so I thought it will be easier to do in the application.IDs...
View Articlebash, Linux: Set difference between two text files
I have two files A-nodes_to_delete and B-nodes_to_keep. Each file has a many lines with numeric ids.I want to have the list of numeric ids that are in nodes_to_delete but NOT in nodes_to_keep, i.e....
View ArticleFunction to find symmetric difference (opposite of intersection) in R?
The ProblemI have two string vectors of different lengths. Each vector has a different set of strings. I want to find the strings that are in one vector but not in both; that is, the symmetric...
View ArticleHow to compare nested lists in dataframe per row in R?
I have a dataset that contains lists for values in two columns, and I want to be able to compare the lists with each other, for each row. For example, I have 3 groups, in which certain numbers are...
View ArticlePreserving the order in difference between two lists
I have two lists l and l_match. l_match is an empty list. l =...
View ArticleRemove common list elements in lists of lists in R
I have a list of lists, I would like to remove the common elements between these sublists.For examplemylist = list(c(1, 2, 3, 4),c(2, 5, 6, 7),c(4, 2, 8, 9))becomesmylist = list(c(1, 3),c(5, 6, 7),c(8,...
View ArticleDifference and intersection of two arrays containing objects
I have two arrays list1 and list2 which have objects with some properties; userId is the Id or unique property:list1 = [ { userId: 1234, userName: 'XYZ' }, { userId: 1235, userName: 'ABC' }, { userId:...
View ArticleLoop through list of dataframes in R to take set difference
I'm hoping to take the set difference between 40 dataframes (10 years of data each with 4 quarters) starting with the second quarter of my first year and comparing it to the first quarter of my first...
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Modifying Setdiff function in r [duplicate]
I am trying to find the difference between 2 tables based off one column but I am interested in knowing what is written in the whole row.Table 1Table 2Currently I have used Setdiff(Table1$name,...
View ArticleHow to filter out answer options on previous answers
I am creating a shiny app. I have a first multiple choice question q1 with a possible list of answers. In the second, one-choice question q2, as a list of possible answers I have the options selected...
View ArticleComparing string differences between two columns in the same row in R, then...
I'm working on automating toxicology read-in and import for unique case IDs from flat .csv files in R/RStudio. I've been asked to generate a spreadsheet that compares the differences between the manual...
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