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.
J'ai deux listes, telles que: list_values = [11,22,33,44,55,66,77,88,99,100, 111, 222]
et une liste de valeurs list_columns = ['a','b','c','d','e','f','g','h','k','l','m',' ...
J'essaie de découvrir un exemple de construction d'une matrice de contiguïté à partir d'une liste, mais je n'arrive déjà pas à le comprendre. Je pens ...
