How to fill empty data with zeros?
After going through some previous answers I found that I could use this code to fill missing values of df1[0] which range from 340 to 515,with open('contactasortedtest.dat', 'r') as f: text =...
View ArticleMulti-permutation data comparison in R
I have been comparing the common elements in multiple datasets and have been having great success with a small number of sets. However, I want to compare a larger number of datasets and I am trying to...
View ArticleTwo lists - removing elements (difference)
I have this classclass Accounts: def __init__(self, id, name, date): self.id = id self.name = name self.date = dateand two lists of this classesaccounts = []expired_accounts = []I want to delete...
View ArticleHow to find nonmatching colnames in 2 dataframes?
I have 2 data frames with colnames as dates.eg:2020-01-01, 2020-01-02 and so on.Some dates are missing from the second dataframe, hence different column length. I want to find out which dates are...
View Articlesetdiff() showing no data in r
Trying to use a decision tree to predict drug classes, when I set a seed and then set the sample_frac() for my training data & then use setdiff() for my test data im seeing my data within the...
View ArticleSelect rows from one data.frame that are not present in a second data.frame
I have two data.frames:a1 <- data.frame(a = 1:5, b=letters[1:5])a2 <- data.frame(a = 1:3, b=letters[1:3])I want to find the rows a1 have that a2 doesn't.Is there a built in function for this type...
View ArticlePython sets: difference() vs symmetric_difference()
What is the difference between difference() and symmetric_difference() methods in python sets?
View ArticleMySQL: difference of two result sets
How can I get the set difference of two result sets?Say I have a result set (just one column in each):result1:'a''b''c'result2:'b''c'I want to minus what is in result1 by result2: result1 - result2...
View ArticleWhy is the Groovy method minus() so slow with lists of numbers?
Let's say I have two lists left and right of size n, each with unique integers, and I want to find the intersection and differences. This should be able to be done in O(n) or O(nlog(n)). This is how I...
View ArticleGet distinct list between two lists in C#
I have two lists of strings. How do I get the list of distinct values between them or remove the second list elements from the first list? List<string> list1 = {...
View ArticleWhat is the fastest or most elegant way to compute a set difference using...
Let A and B be two sets. I'm looking for really fast or elegant ways to compute the set difference (A - B or A \B, depending on your preference) between them. The two sets are stored and manipulated as...
View Articledifference of two sets of intervals
i'm trying to write some code to calculate the difference of two sets of intervals A - B , Interval endpoints are integers , but i'm strugling to come with efficient solution , any suggestion would be...
View Articlesetdiff() on grouped variables
I want to compare groups of variables to an external list (vector "Valid_codes").Consider the following exampleID<-c("Carl",...
View ArticleGet difference between two lists with Unique Entries
I have two lists in Python:temp1 = ['One', 'Two', 'Three', 'Four']temp2 = ['One', 'Two']Assuming the elements in each list are unique, I want to create a third list with items from the first list which...
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...
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...
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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 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...
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 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 ArticlePreserving the order in difference between two lists
I have two lists l and l_match. l_match is an empty list. l =...
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 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 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 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 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 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 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 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...
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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.
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