A data frame is a tabular data structure. Usually, it contains data where rows are observations and columns are variables of various types. While "data frame" or "dataframe" is the term used for this concept in several languages (R, Apache Spark, deedle, Maple, the pandas library in Python and the DataFrames library in Julia), "table" is the term used in MATLAB and SQL.
Je veux ajouter une colonne binaire à mon Dataframe en fonction de la question de savoir si des colonnes données contiennent NAN ou non. J'ai essayé de le faire avec le co ...