Learn how to filter Pandas dataframe using ‘in’ and ‘not in’ operators, similar to SQL. Master efficient data filtering techniques in Pandas for data analysis and manipulation.… Read More How to Filter Pandas Dataframe using ‘in’ and ‘not in’ like in SQL
Advertisements So i’m new to python, I want to discover it’s potential and get more knowledge about what I can do with it. I did this code to compare CSVs, basically what it does you provide it 2 CSVs, CSV1 that has some id column and a column with values that you want to add… Read More A More Efficient Way to Compare CSV Columns and Adding to a certain row on Second CSV (Python)
Advertisements So I have two dataframes, "df1" and "df2" (see code below). I want to create a new variable in "df1" by iterating trough the elDate variable in "df2", and picking the closest elDate value above the date value in "df1". For example, the first row in "df1" is Albania with the date 1996-12-24. I… Read More How to pick the nearest date above a certain date in one dataframe from another
Advertisements A first dataframe has a column containing categories which are the same as the headers of the second. There are multiple row entries for one name in df1. df2 will have 1 row entry per name. df1 has 1 row entry per category per name. All rows for one name occur in sequence in… Read More How can I map multiple row entries in df1 (name, category, amount) to one row entry per name under the respective category columns of another df2?
Advertisements So, I have this data frame about Super Store Sales. I have 2 sheets: First is named "Orders" Second one is named "Returns" In both sheets we have a matching column called "Order ID", but in the Return sheet we have less rows in "Order ID" of returned purchases and what I basically want… Read More Check if two columns are having matching values, but values are not in the same index places(Python, Pandas)
Advertisements Week # 1 2 3 4 5 Ratio 0.9 0.9 0.8 0.8 0.6 Select week from Drop Down List ____ (we have 1,2,3,4,5 inside) So how can we use index,match,product or other excel formulas for performing the following task: If 3 is selected from the dropdown list, then we multiply 0.90.90.8 If 2 is… Read More How to use Index, Match and Product functions in excel for this questions?
Advertisements I have a data frame which looks like this: df1 <- structure(list(day = c(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20), observ1 = c(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0,… Read More How to match one row from one column to the next 5-10 rows in two other columns in R?
Advertisements I have two large, messy datasets. The structure of the variables for this issue roughly looks like this: First, a dataset containing some IDs. DF1 <- tibble( ID1 = c(1, 2, 3), ID2 = c(4, 5, NA), ID3 = c(9, NA, NA) ) > DF1 # A tibble: 3 × 3 ID1 ID2 ID3… Read More Several columns matching over 2 data.frames
Advertisements Tables and code at the bottom will probs help much more than description. I have a solution that works but think its very inefficient see bottom. Problem: I have two data frames df_1 and df_2 — these dataframes have a match column – match_id df_2 has a date column that I am trying to… Read More Python: Filling a dataframe sequentially based on matching ids (inefficient code)