Description: The ‘ISOWEEKNUM’ function is a DAX (Data Analysis Expressions) tool that allows users to obtain the ISO week number corresponding to a specific date. This function is particularly useful in data analysis, as it enables the grouping and analysis of temporal information more effectively. The ISO 8601 standard establishes that the week starts on Monday and that the first week of the year is the one containing the first Thursday of the year, which may differ from other conventions that consider Sunday as the week’s start. By using ‘ISOWEEKNUM’, analysts can perform calculations and visualizations that align with this international standard, facilitating the comparison of data over different periods. The function takes a date as an argument and returns an integer representing the week of the year, allowing users to conduct weekly analyses in their data models. This ability to work with ISO weeks is crucial for organizations operating in international environments, where the standardization of weeks can influence planning and decision-making.
