# Video Tutorials - Data Operations

## Tecplot 360 Basics: Data Alter

This quick tutorial about Data Alter covers the Specify Equations Syntax in Tecplot 360. We will be calculating a commonly desired variable which is often not included in exported data sets: velocity magnitude. […]

## FEA Series Part 3: Extracting Maximum Stress Using Macros

In this video, we will be extracting maximum stress using macros to calculate the von Mises stress over time. […]

## FEA Series Part 2: Data Alter Using IF Conditions

In this video we will be analyzing a connecting rod data set to find a stress threshold using an IF condition. […]

## Calculate Q-Criterion with Tecplot 360

In this video we’ll show you how to calculate Q-Criterion, plot the results, and compare the performance of Plot3D and SZL file formats for this work. […]

## External Flow – CFDA and Variable Calculation

This video demonstrates how to properly define the Tecplot 360 CFD Analyzer (CFDA) settings in a data set, and how to use those settings to calculate velocity from momentum. […]

## Transient Series 4: Calculating Variables and Using Contour Color Cutoff

This video demonstrates how to calculate a new variable, Vorticity Magnitude, using the built in CFDA Functions of Tecplot 360 from the existing variables in a dataset. Then shows use of the Contour Color Cutoff property to isolate a specific region of Contour levels in a plot. […]

## Extracting Variables in Tecplot Chorus

The process of extracting variables includes recording a macro to calculate the integral of surface pressure, then communicating the value back into Tecplot Chorus. […]

## Transient Series 2: Understanding Transient Data through Extractions

This video shows techniques in Tecplot 360 to reduce the data that needs to be analyzed using two built in extraction methods, including extracting points from a geometry line and probing over time. […]

## Create & Interpolate to an Offset Surface

Learn how to create an offset surface in the volume domain near the boundary layer. […]