For questions on interpreting existing error messages that you have encountered, as well as writing and managing messages, assertions and checks for your own functions.

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2
votes
0answers
73 views

Finding and interpreting errors [duplicate]

This sounds like a fairly trivial question, but I can't think of any way to solve it. I am doing an extensive parameter sampling where a set of ODEs is used together with ...
0
votes
0answers
38 views

NIntegrate issue to do with unknown types [duplicate]

I have a numerical function zz: zz[s_ ? NumericQ] := so3toE3[Inverse[yn[s]].ND[yn[k], k, s]]; The other functions involved have 2 pages of code defining them so ...
0
votes
0answers
31 views

Expressions like <<1>> [duplicate]

In a function where I call the Maximize function, I am getting an error that says ...
1
vote
1answer
391 views

What does the Error Message in DSolve really mean?

Having this ordinary non linear differential equation $$y'-x^2 (y+1)\cdot (y+2)^2= 0$$ with the boundary condition $y(4)=2$. When trying to solve this one with Mathematica by using ...
2
votes
1answer
410 views

Infinite Expression Error from NDSolve

I am trying to solve a differential equation numerically. So I have ...
0
votes
1answer
145 views

Error messages when using NInverseFourierTransform

I have two functions that I need to inverse Fourier transform and I was trying to get Mathematica to help me. I tried simply using theInverseFourierTransform ...
1
vote
1answer
698 views

Plotting a complex function [duplicate]

What does it mean if this message appears: {Im[(1-E^Times[<<3>>] f)/(1-Power[<<2>>] f)]-0,Im[(1-E^Times[<<3>>] f)/(1-Power[<<2>>] f)]-0} must be a list of equalities or ...
4
votes
1answer
220 views

CreateCOMObject doesn't work on home edition

I can call an application named "PinPoint.Plate" with Visual Basic, Python and Mathematica version 8 but not with version 9. I can still call Excel though. How can I fix this? This is what I did: ...
0
votes
1answer
331 views

Evaluating FindRoot at different starting points on a grid

I'm trying to evaluate the roots of a complex function at different starting points on a grid using Do[Do[FindRoot[g[z], {z, j + k*I}], {j, 10}], {k, 10}]. However, ...
3
votes
1answer
205 views

How to show error messages in current notebook?

I would like Mathematica to print error messages in current notebook together with output. This is default option in Mathematica, but recently I turned it off somehow. Now, I am getting output in ...
2
votes
1answer
134 views

Differences between ParametricPlot3D and NIntegrate

I have a function $f : \mathbb{R} \rightarrow \mathbb{R}^3$ defined in a rather nasty way in mathematica however it's a smooth function and what not. I am interested in $f'[t]$ and when I run it ...
12
votes
4answers
280 views

How to catch complete error message information

If I evaluate this expression: Module[{}, 1/0;0^0]; msg = $MessageList I get: ...
15
votes
1answer
386 views

Quiet doesn't work with FindRoot when using Brent method

The following has no solution: FindRoot[x == 1, {x, 0.25, 0, 0.5}] And Mathematica correctly warns us: FindRoot::reged: The point {0.5} is at the edge of the ...
3
votes
2answers
245 views

How can I get WhenEvent to recognize criterion I specify?

Using NDSolve I want to solve a differential equation till a quantity which is a function of the dependent variables reaches a certain value. My functions and criteria are complicated, but I am able ...
2
votes
2answers
442 views

Solving set of non-linear simultaneous equations gives PolynomialGCD::lgrexp error - what next?

I'm trying to solve a set of six simultaneous non-linear equations to get a numerical answer using NSolve: ...
4
votes
1answer
345 views

Differential Equations with Matrices

I'm trying to implement the differential equation of a Cellular Neural Network in Mathematica as seen below: ...
1
vote
0answers
70 views

Consistently annoying error messages in Mathematica 9 [duplicate]

Possible Duplicate: Strange ::usage behavior in v9 Has anyone had any issues with a function, let's call it Function, which worked in Mathematica 8 getting the error message ...
4
votes
1answer
499 views
3
votes
1answer
206 views

Font Issues: “Like Resource 58” error

I'm running Mathematica 9.0.0 on a Macbook Air with OSX 10.6.8 and I've recently started having issues with the font in the program. All special characters are being replaced with other characters in ...
2
votes
0answers
83 views

StringMatchQ error messages printed to console while main notebook is sitting idle [duplicate]

Possible Duplicate: Strange ::usage behavior in v9 I'm currently finishing up a Mathematica vector calculus package (MMA9.0 on Mac Os X), but have had a persistent problem that I haven't ...
-1
votes
1answer
149 views

Manipulate code creates error messages when file is opened

When I open the file containing the following code I get a series of error messages. Once I evaluate the cell with the code the error messages disappear. What is Mathematica doing when it opens a ...
2
votes
1answer
2k views

How do I troubleshoot when I get a Part::partd or a Part::partw error?

Mathematica has produced the following error message: Part::partd: Part specification ... is longer than depth of object? What is partd? I think I may ...
9
votes
1answer
176 views

StringMatchQ and Alternatives throws message in init.m

The report of this issue, which itself relates to code of my answer here, exposed a behavior I cannot explain. If I use StringMatchQ in combination with ...
2
votes
1answer
230 views

How can I remove unnecessary warning messages?

I updated Mathematica,CdfPlayer to new Version (9). I made a simple Application in Mathematica 9 and deployed into ...
9
votes
2answers
475 views

Solving/Reducing equations in $\mathbb{Z}/p\mathbb{Z}$

I was trying to find all the numbers $n$ for which $2^n=n\mod 10^k$ using Mathematica. My first try: Reduce[2^n == n, n, Modulus -> 100] However, I receive ...
5
votes
1answer
187 views
16
votes
3answers
942 views

What is an “INTERNAL SELF-TEST ERROR”?

I got this all the time after updating to 9.0 (OS 10.8.2): That's Clipboard|c|3015 for the benefit of anyone searching. The error went away with 9.0.1, but a version has reappeared (multiple times ...
1
vote
2answers
153 views

Error changing edge thickness in a GraphPlot

I'm having some problems with the Mathematica graphics inspector. I want to make a graph with the following code: ...
9
votes
2answers
263 views

How to find a specific error message?

Is there a way to find an existing error message in the System` context, that is used for a certain case? I want to include a message in a custom function that ...
3
votes
0answers
106 views

Dealing with errors and resuming the code after one

How can I write my Mathematica code so that it resumes at a specific place if any Message is displayed during the execution of an expression? For example, in Visual ...
28
votes
3answers
857 views

No warning when extrapolating with Plot

One of the most annoying "features" of Mathematica is that the Plot family does extrapolation on InterpolatingFunctions without ...
2
votes
2answers
613 views

Problem with NDsolve for a system of equations

I want to solve a system of differential equations which is not very complicated, but I cannot handle the problem with mathematica!! Please have a look at the problem and result and help me with your ...
1
vote
1answer
717 views

How to find local minima of a multivariate function with singularity?

I am working on a logistic regression problem which requires minimizing a cost function J[{theta0, theta1, theta2}, X, y] to find the optimal value for fitting ...
2
votes
1answer
3k views

How do I identify the source of a “Tag times protected” error?

I have some code that looks like Table[ a = 1; b = {2, 3} c = i;, {i, 2} ] which gives an error: Set::write: Tag Times in c {2,3} is ...
0
votes
1answer
2k views

Stategies to avoid NIntegrate::slwcon error

I am trying to numerically evaluate an integral whose integrand depends on two parameters, say $(a,b)$ and when $b\gg 1$ I suspect (although it's not guaranteed) that the integrand is very small. Thus ...
1
vote
1answer
165 views

Skip one step of the loop if there is an NIntegrate::eincr message

Is there a possibility of skipping one step of a loop if in this step there appears an error like NIntegrate::eincr? After skipping, the loop should go to the next ...
4
votes
1answer
1k views

NonlinearModelFit::cvmit: Failed to converge to the requested accuracy or precision within 100 iterations

I have got a problem in my program with NonlinearModelFit: ...
2
votes
1answer
140 views

Printing a success message if no errors have yet been thrown in the current session

I plan to run a lengthy Mathematica script on a Linux terminal (by "a Linux terminal," I mean that I have text output only -- no GUI), using the program math. To ...
2
votes
1answer
519 views

FindRoot Infinite expression 1/0 encountered error

I have 1 equation in 1 variable, which when I use Plot, looks like this: ...
5
votes
3answers
326 views

ComplexInfinity/Indeterminate error when evaluating derivative

Motivation: I want to find the coefficients for the polynomial that is obtained when one adds together the first $n$ natural numbers to the power of $a$; that is, when you consider $1^{a} + 2^{a} + ...
6
votes
1answer
100 views

What is the simplest way to determine which call to a superfunction has generated a Message?

I have a complicated function which contains many calls to NIntegrate, NSolve, FindRoot and ...
0
votes
1answer
360 views

Getting Internal Self-Test Error

I have two questions related to this simple code: ...
2
votes
3answers
350 views

How can `SquareWave` be used as the input in `OutputResponse`?

I'd like to compute the response of a TransferFunctionModel when driven by a SquareWave. Here's a simple example, ...
11
votes
2answers
519 views

Take screenshot of the entire desktop using Mathematica

Is it possible to get a screenshot of the entire desktop directly in Mathematica? I am on Ubuntu running Mathematica 8. For some reason GUIScreenShot[] fails. But ...
3
votes
2answers
384 views

How to set the initial condition? (to make IC and BC consistent)

I want to find the initial condition which fits mixed boundary condition of Phi[r, Theta, t]. The original initial condition in text is Phi[r, Theta, 0] == 1 . ...
5
votes
1answer
2k views

How do I prevent NIntegrate::inumr errors within other functions?

I believe this question is best illustrated with a simple example. If I run FunctionInterpolation[NIntegrate[a + b, {a, 0, 1}], {b, 0, 1}] I get errors of the ...
5
votes
1answer
1k views

FeynArts not working properly

So I have installed all FeynArts folders (from 3.5 to 3.7) with FeynCalc 8.0.1., and none of it is working properly :\ First I load the path to specific FeynArts package (3.5 for instance), then, by: ...
9
votes
4answers
554 views

Using Position (which requires a pattern) in the same manner as Select (which requires a criterion)

I am using Mathematica7. I have a list of lists (creatively named list in the following sample code) containing data. I would like to find the positions of the ...
6
votes
1answer
317 views

Mathematica Opens Each Session With Beep

First off, I am using Mathematica 8.0 and Mac OS X 10.7.4. Recently, when starting a new Mathematica session, I am confronted with an error beep and message window stating "The file you tried to open ...
4
votes
1answer
303 views

Error Interpretation in NIntegrate

I am using a recursion algorithm developed by Migdal for Lattice Field Theory, and I have the following code: ...