Home / Monte Carlo

Quantum XL Monte Carlo Features

Build a model of a measurement or a product, describe each input by a distribution rather than a single number, run the simulation, and read what the spread of the inputs does to the outputs.

The commands are on the QXL Monte Carlo New ribbon tab, in three groups: Design for building and marking the model, Monte Carlo for running and analysing it, and Additional Tools for the worksheet tools that sit beside it.

Model Building

QXL Monte Carlo New > Design. Marking the cells, then building or importing the design sheet.

• Model Building Overview - Every page in this group
• Mark Input - Give a cell a distribution so the simulation samples it
• Mark Output - Mark a cell as a result, so every trial's value is collected
• Unmark - Take the marking off a cell
• Custom Distributions - Build a distribution of your own shape and pick it when marking an input
• Create Empirical - Use a column of your own sample data as an input distribution
• Create Monte Carlo Design Sheet - Write the sheet that holds the model
• Modify Monte Carlo Design Sheet - Change a design sheet already written
• Import Model from Quantum XL DOE - Build the sheet from a DOE regression model
• Validate Model - Check whether the model runs in the fast engine, and if not, why
• Copy and Paste Markings - Move markings between cells, sheets and workbooks
• Supported Distributions - Every distribution a marked input may use
• Supported Excel Functions - Every Excel function the fast engine can parse

Analyzing the Model

QXL Monte Carlo New > Monte Carlo. Running the simulation and reading the result.

• Analyzing the Model Overview - Every page in this group
• Run Model - Run the simulation, at a chosen count, in either engine
• Optimize - Search for the input settings that give the best result
• Percent Contribution - How much of each output's spread comes from each input
• Latitude Plot - Chart where each pair of inputs keeps the outputs in specification
• Surface and Contour Plot - Plot an output over two inputs swept across their range
• Tolerance Allocation - Sweep each input's spread and report what it does to the outputs

Additional Tools

QXL Monte Carlo New > Additional Tools, and the worksheet tools that go with them.

• Additional Tools Overview - Every page in this group
• Sampling Matrices - Write a worksheet of sampled factor settings, one column per factor and one row per run
• Scorecard - Create a scorecard, and chart the one you have
• Linear Tolerancing - The three linear tolerance stack-up worksheet templates

Latitude Plots, the tutorial

• Latitude Plots Tutorial: a worked example, from a two-part tolerance stack to a plot you can read, with the arithmetic to check the simulation against. Separate from the Latitude Plot tool page above, which covers every control.