Category "dataframe"

Pandas Value Error: Cannot set item on a Categorical with a new category, set the categories first

I've been looking for other similar issues on this ValueError, but none of them has the same code as I have. So here it is. As I am still very new at this, I am

How to find the number of seconds elapsed from the start of the day in pandas dataframe

I have a pandas dataframe df in which I have a column named time_column which consists of timestamp objects. I want to calculate the number of seconds elapsed f

Python calculate increment rows till a condition

How to obtain the below result. Sample Data with Output Time To default is the column which is to be calculated. We need to get the increment number as Time to

Pandas Group by index Hour and keeping observation for each hour

I have a pandas dataframe containing one column and a datetime index, i need to group the data by hour and keep each obsevation (record) for each of the grouped

ParseError: Error tokenizing data. C error: Buffer overflow caught - possible malformed input file. (read_csv)

I cannot use read_csv method of pandas properly on kaggle. Error that I get is: ParseError: Error tokenizing data. C error: Buffer overflow caught - possible ma

how to add columns and values in a dataframe in python

In the below JSON array { "data": [ { "name": "page_call_phone_clicks_logged_in_unique", "period": "lifetime", "values": [ {

Count all NaNs in a pandas DataFrame

I'm trying to count NaN element (data type class 'numpy.float64')in pandas series to know how many are there which data type is class 'pandas.core.series.Seri

Review the \n (newline) values with proper representation in DataFrame

I have this: test = ['hey\nthere'] Output: ['hey\nthere'] And when I insert in into the DataFrame it stays the same way: test_pd = pd.DataFrame({'salute': test

Python code to return element value in dataframe based on another dataframe

I have a dataset similar to this generated from a file with yearly data d1 = pd.DataFrame({'category': ['A', 'B', 'C', 'D', 'E', 'F'], 'col

How to add new edges to the stellargraph dataset?

I need to add some extra edges to Cora dataset using stellargraph. Is there ane way to add edges to the current dataset in stellargraph library? import stellarg

How to filter for variables in a column of one df from another df's column with unequal length in R?

I am trying to select for variables in a column of a DF using the variables from a column in another DF with different length. I am using Dplyer to filter. DF1

Limit writing of pandas to_excel to 1 million rows per sheet

I have a dataFrame with around 28 millions rows (5 columns) and I'm struggling to write that to an excel, which is limited to 1,048,576 rows, I can't have that

Placeholder for DataFrame in pd.query

I use pd.query and pd.eval a lot. However, sometimes I find myself in situations where I would like to filter an unnamed DataFrame with pd.query and it would be

Random Sampling base on 1 column after Groupby

I have a Spark Table, which contains 400+ millions records/rows. I used spark.table to convert it into a DF. The DF looks like this below id pub_date

Replacing ID values of polygons in a geodataframe to values of polygons from another geodataframe

I have polygons inside another bigger single polygon and I want to be able to replace the ID values (for example) of the former polygon to that of the latter. S

How we can use mutimap_agg function in spark sql and also suggest if any equivalent or alternative function to this

Can anyone help how multimap_agg function in SQL and can be used in spark sql

Display count on top of seaborn barplot

I have a dataframe that looks like: User A B C ABC 100 121 OPEN BCD 200 255 CLOSE BCD 500 134 OPEN DEF 600 1

Im getting a different output than expected when using df.loc to change some values of the df

I have a data frame, and I want to assign a quartile number based on the quartile variable, which gives me the ranges that I later use in the for. The problem i

unable to iterate through all files present in a folder

# Folder Path path = "/content/gdrive/MyDrive/data files" # Change the directory os.chdir(path) # Read text File def read_text_file(file_path):

TypeError while tokenizing a column in Spark dataframe

I'm trying to tokenize a 'string' column from a spark dataset. The spark dataframe is as follows: df: index ---> Integer question ---> String This is h