WebJun 18, 2013 · for col in df: #get dtype for column dt = df[col].dtype #check if it is a number if dt == int or dt == float: df[col].fillna(0) else: df[col].fillna("") When you iterate through a … Web1 day ago · You can use interpolate and ffill:. out = ( df.set_index('theta').reindex(range(0, 330+1, 30)) .interpolate().ffill().reset_index()[df.columns] ) Output: name theta r 0 wind 0 10.000000 1 wind 30 17.000000 2 wind 60 19.000000 3 wind 90 14.000000 4 wind 120 17.000000 5 wind 150 17.333333 6 wind 180 17.666667 7 wind 210 18.000000 8 wind …
Pandas: filling missing values by mean in each group
WebJan 22, 2024 · To calculate the mean() we use the mean function of the particular column; Now with the help of fillna() function we will change all ‘NaN’ of that particular column for … WebHere's our replacement: dat [ ["four"]] [is.na (dat [ ["four"]])] <- 0 head (dat) # one two three four # 1 NA M 0.80418951 0.8921983 # 2 0.1836433 O -0.05710677 0.0000000 # 3 -0.8356286 L 0.50360797 0.3899895 # 4 NA E NA 0.0000000 # 5 0.3295078 S NA 0.9606180 # 6 -0.8204684 -1.28459935 0.4346595. اهنگ بن تن
Pandas: fillna only numeric (int or float) columns
Webif you have more than two columns, make sure to specify the column name df ["value"] = df.groupby ("name").transform (lambda x: x.fillna (x.mean ())) ['value'] – Lauren Jan 10, 2024 at 16:57 27 @Lauren Good point. WebMay 21, 2024 · Since data.table 1.12.4 (Oct 2024), data.table gains two functions to facilitate this: nafill and setnafill. nafill operates on columns: cols = c ('a', 'b') y [ , (cols) := lapply (.SD, nafill, fill=0), .SDcols = cols] setnafill operates on tables (the replacements happen by-reference/in-place) WebAug 5, 2024 · You can use the fillna () function to replace NaN values in a pandas DataFrame. This function uses the following basic syntax: #replace NaN values in one column df ['col1'] = df ['col1'].fillna(0) #replace NaN values in multiple columns df [ ['col1', 'col2']] = df [ ['col1', 'col2']].fillna(0) #replace NaN values in all columns df = df.fillna(0) اهنگ بغل 2 احمد سلو