Category "dataframe"

if values of a column is in between two columns in R, populate a new column

I have two data frames of different lengths, like : df1 locusnum CHR MinBP MaxBP 1: 1 1 13982248 14126651 2: 2 1 21538708 2

Data Frame- Add number of occurrences with a condition in R

I'm having a bit of a struggle trying to figure out how to do the following. I want to map how many days of high sales I have previously a change of price. For

How to join two columns with lists into column with nested lists?

I have a dataframe: v1 v2 [1,2] [4,5,6] [1,1,5] [4,5,6,7] I want to join them into column with nested lists: v1 v2 v3 [1,2]

string column conversion to float in Pandas DataFrame

I want to get left value (LD) pipe separated value from the DataFrame column "'CA Distance Nominal (LD | au)" here is the code. when I convert the string to flo

Update dataframe 1 using two columns in dataframe 2 in python

I want to update Freq column in df1 using Freq column in data frame 2 as shown below, data = {'Cell':[1,2,3,4,'10-05','10-09'], 'Freq':[True, True,True,True,Tru

How to do sum and filter in rbind function

I am using an R package which extracts data from tables in a database based on the flag for each table. If the flag is 1, extract data from that table. If the f

How to count unique entries in a column across multiple columns in R

I have a data set that looks something like this data set example I am trying to find unique entries in each of the columns I managed to do it for 1 column util

How do you populate missing dates for lag?

Say that I have a dataset. date <- c("2004-02-01", "2004-03-05", "2004-08-09", "2004-08-13", "2004-10-20", "2004-11-02", "2008-01-05", "2008-02-03", "2008-08

How to completely reorganise a table using aggregate data from qualitative information

I have a pandas dataframe which has the following layout: Column data type 'Water-Binder' float 'Fly Ash' float 'Age' int 'Strength %' float The age column i

Pandas : Create new column based on text values of other columns

My dataframe looks like this: id text labels 0 447 glutamine synthetase [protein] 1 447 GS

Dividing values in columns based on their previous marker

I have the following dataframe: df = {'id': [1,2,3,4], '1': ['Green', 'Green', 'Green', 'Green'], '2': ['34','67', 'Blue', '77'], '3': ['Blue', '45', '9

Map range from 2 columns based on overlapping range in another Pandas dataframe and sum values for same range

I have two datasets (df1 and df2) of values with a certain range (Start and End) in both of them. I would like to annotate the first one (df1) with values from

create dataframe from dictionary of datetime and int

I have datetime and int values dictionary like below. end_date = datetime.datetime.strptime("01-12-2020", "%d-%m-%Y") details = { datetime.datetime.strptime

How do I populate upper.tri of matrix with matched integers from the lower.tri?

Issue I have a dataframe of familial relationships coded with integers, where R01 is the relationship of person N to person 1, R02 their relationship to person

How to reshape my dataset in specific way?

I have a dataset: name val a a1 a a2 b b1 b b2 b b3 c c1 I want to make all possible permutations "names" which are not

How to create a new columns based off of values of other columns which could contain #s or NaN?

I have a few dataframes that I'm merging based on known, populated fields. The resulting dataframe will always contain a set of columns, but may or may not have

Add a new record for each missing row in a DataFrame with TimeStamp without replacing the original records

Be the next Pandas DataFrame: | date | counter | |-------------------------------------|------------------| | 2

Pandas - Take value n month before

I am working with datetime. Is there anyway to get a value of n months before. For example, the data look like: dft = pd.DataFrame( np.random.randn(100, 1),

R incongruity when copying a column in R with ifelse

After loading lots of xlsx sheets of multiple workbooks, I want to create a double check of the tidiness and cleanliness of the data source. I created a data fr

Remove specific string char at the beginning of each lines of a txt file using python

I'm currently working on a script in python. I want to convert an xls file into a txt file but I also want to clean and manage the data. In the xls files, there