Maple Flow Questions and Posts

These are Posts and Questions associated with the product, Maple Flow

Is it possible to open or import, and execute Maple Flow documents in Maple 2021?

We have just issued a critical fix to Maple, MapleSim, and Maple Flow running on macOS.

We have heard from some users who were experiencing serious problems with doubled characters while using Maplesoft products on macOS, including these reports on MaplePrimes. Further investigation determined that these problems appear specifically on macOS 11 and macOS 12.  I am happy to report that we have now corrected the problem, and a patch is available. 

Anyone who uses macOS 11 or macOS 12 should install this update immediately. We also strongly recommend that all macOS users install this update, to avoid problems that may be triggered by future updates to your operating system.

To obtain this update:

For those who have experienced problems, we apologize for the inconvenience and thank you for your patience while we worked to find a solution.

I am evaluating Maple Flow 20212.2 on a Macbook Air M1 running MacOs Monterey 12.2.

Unfortunately this is being severly hampered because for every keystroke Maple Flow is entering 

that Character twice.  Disabling keyboard autorepeat and restarting Mac or Maple Flow makes no difference.

Anyone got a solution for this?


does anyone has any idea on how the number of digits displayed and the accuracy of calculations in MapleFlow works?

It looks like it is nothing like it is in Maple.

For example:









Best regards,

Hi.  I have not been able to find the individual cost of Maple Flow.  How much does it cost?  (in CDN)  Is it inlcuded in Maple?

Can Maple Flow be installed on Linux?  If not, will a Linux version be released on the future?



I have a MapleFlow program that perform some symbolic calculations. To test the program, I assign a numerical value to a variable, say a:=1.6, in the middle of the program. I would like to clear the variable and continuing the program development using symbolic calculations. I've tried unassigning and restart but nome worked.

Any ideas?


I tried a simple expressioin using imaginary numbers in MapleFlow,

a:=1 + 2*i

but got the following error:

¨'mn' is not numeric"

does anyone know what is happening?

thanks very much.


I looked at the file mapleflowrc and saw that it lists several palettes that are not visible in the workshheet dock.

Does anyone know if these palettes are available in mapleflow? And if so, how to make them visible in the worksheet dock?

thanks very much in advance.

Hi, I'm just trying to use assign, like in Maple,


s := solve({x + y = 1, 2*x + y = 3}, {x, y});


                      s := {x = 2, y = -1}

x, y;
                             2, -1

in MapleFlow, but it doesn't work!

Any ideas?

Thanks very much in advance

Is Maple Flow available as individual licence similar to Maple? 

We’ve been busy! We have just released the 2021.2 updates for Maple, Maple Flow, and MapleSim. Here’s a quick overview. These updates are freely available to all customers who have the 2021 version of these products.


The Maple update includes a variety of corrections and improvements to the math engine and interface. It is available through Tools>Check for Updates in Maple, and is also available from the Maple 2021 download page, where you can also find more details.

In particular, this update includes fixes to the bug in the combine command when working with double summations, and the problems when performing context menu operations on values with units while in Document mode, both of which were reported on MaplePrimes. As always, we appreciate the feedback!

Maple Flow

The Maple Flow 2021.2 update offers a richer range of formatting features for creating professional-looking engineering documents, which have been requested by customers. Highlights include sections, controlling the display of commands, annotating images, and disabling automatic evaluation while making a series of changes.  This update is available from the Maple Flow 2021.2 download page, which also contains more details.


Lots of good stuff here that makes it easier to build and analyze models, including productivity features that speed up the creation of models that use hydraulics, support for the latest CAD file formats in the MapleSim CAD toolbox, the ability to model drift conditions with the MapleSim Tire Library, tools for simulating 3-D winding effects with the MapleSim Ropes and Pulleys Library, and a new MapleSim Web Handling Library add-on (which, I am sad to say, has nothing to do with Spiderman). See What’s New in MapleSim for details, and the MapleSim 2021.2 download page for instruction on how to obtain your update.

This is my second try---my previous post about the Maple Conference seems to have vanished into thin electrons.

Anyway!  The conference opens tomorrow!  There are many really interesting prerecorded talks, three live plenaries, two excellent panels, and registration is free!  See the above link.

I look forward to "seeing" you tomorrow.

Rob Corless, co-Chair of the Program Committee

on behalf of the organizers

Here's a podcast that covers a few topics that get discussed on MaplePrimes.

We all like finding the right tool for the job. In the Sep 2021 episode of the Engineering Matters Podcast “#127 – Tools for Thinking” you can discover how far engineers have come in their quest for better tools.

It features contributions from several members of the Maplesoft team as they discuss how the user experience shapes the adoption of engineering software tools.

The hosts have fun describing some early calculation hacks - from early Sumerian farmers using their fingers as tally counters, to the paper calculus notebooks of the 1850s used by historical engineering figures like Isambard Kingdom Brunel. What starts as a necessity gets improved over time to save them mental effort – all driven by the way users interact with the tool.

This episode gives a behind-the-scenes look at some of the decisions that shaped the engineering product that is now Maple Flow from its roots in Maple. Maplesoft CEO Laurent Bernardin describes the spark of innovation in the late 1970s, when two professors at the University of Waterloo developed Maple. “The two professors got together, realising that there was a need in math education for a tool to help with calculations and setting out to create that tool. And Maple was born quickly, was adopted across universities around the globe.”

As engineers typically work in ways far removed from the regular academic setting, Product Manager Samir Khan weighs in on the shift that comes from a different user base: “Different tools have different design intents,” says Khan. “Some tools are designed for programmers such as code development environments, like Visual Studio. Some environments are aimed at mathematicians, people who need precise control over the mathematical structure of their equations, and some environments are designed for engineers who simply want to throw down a few equations on a virtual whiteboard and manipulate them and get results.”

The conversation also touches on the design of the GUI itself. Margaret Hinchcliffe, Maple’s Senior GUI Developer expresses the importance of smoothing the user experience - drilling down and taking “the typical tasks that people want to do the most, and make those the most immediate. So really focusing on how many keystrokes do they need to do this task?”.

Ironically the idea of the paper notebook still has features that are desirable. Khan muses on the idea that Maplesoft has “taken the first step with having a virtual whiteboard, but Maple Flow still relies on keyboard and mouse input”. He offers suggestions for what may be next in the industry: “It’d be interesting to see if we can take advantage of modern advances in deep learning and AI to imitate what humans are doing and interpreting handwritten mathematics.”

You can listen to the entire podcast (~30 min) here:

Dear all;

Some of you will have heard of the new open access (and free of page charges) journal Maple Transactions which is intended to publish expositions on topics of interest to the Maple community. What you might not have noticed is that it is possible to publish your papers as Maple documents or as Maple workbooks.  The actual publication is on Maple Cloud, so that even people who don't have Maple can read the papers.

Two examples: one by Jürgen Gerhard, on Fibonacci numbers

and one by me, on Bohemian Matrices (my profile picture here is a Bohemian matrix eigenvalue image).

I invite you to read those papers (and the others in the journal) and to think about contributing.  You can also contribute a video, if you'd rather.

I look forward to seeing your submissions.

Rob Corless, Editor-in-Chief, Maple Transactions

I've written a Mapleflow document that is supposed to use a microphone array to find the intersection of three equations to locate the source of a gunshot.  But the calculation is "Evaluating," and has been for half an hour.  How do I interrupt the calculation?

I'd up load the file, but  


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