> ## Documentation Index > Fetch the complete documentation index at: https://docs.coreweave.com/llms.txt > Use this file to discover all available pages before exploring further. # Find and Replace > Replace cells in a dataset within a specified filter, such as filling missing data with a fixed value ## Description This function can be used to replace cells in a dataset within a specified filter *** ## Application This function can be used in multiple scenarios, with one such example being filling missing data with a fixed value to aid with model training *** ## How to use * Select the step from the **Transform>Filter and Clean** tab * Select your dataset of choice in the 'Data' dropdown * Select which columns you want to include in your operation ### Find Find has 4 different options, this option selects what you are trying to replace **Missing/Empty values** - the manipulator will select any missing data that it finds within your columns selected **Fixed value** - the manipulator will select any data which match your chosen value, for instance if you select 1.8 as your fixed value, any cells that contain '1.8' will be selected **Values lower than** - the manipulator will select any values lower than \< your chosen value **Values greater than -** the manipulator will select any values greater than > your chosen value ### Replace Replace has 3 different values, this option selects what you want to replace your data with **Missing/Empty values** - the manipulator will replace your chosen data with null/empty values **Fixed Value** - the manipulator will replace your chosen data with a singular fixed value **Mean of numerical values in the column -** the manipulator will calculate the mean of ALL data within your column, and fill your chosen data in with that mean value *** ## Example Find and Replace step settings with Columns selected and Missing/Empty values chosen for Find and Replace