# Hist Vision Data Access functions

This topic lists Vision Data Access functions that get values from a Hist structure from a Histogram function Functions are tools that are available in Spreadsheet for processing and analyzing acquisitions or other results. You can add functions to your Spreadsheet job to create tool chains and produce results for specific applications..

Function | Description
GetArea(Hist, Index) | Returns the area in a number of pixels of the extracted histogram A histogram is a graphical representation of the distribution of pixel intensity values. A histogram refers to an array of pixels - how many and their individual greyscale values - within a region of interest (ROI)..
GetValue(Hist, Index) | Returns the number of values contained in the indexed bin between 0 to 255 of the specified Hist data structure.