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.
4
votes
1answer
522 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
283 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
188 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
195 views
Error Interpretation in NIntegrate
I am using a recursion algorithm developed by Migdal for Lattice Field Theory, and I have the following code:
...
5
votes
1answer
94 views
Strange Tilt on error notification
I was testing the source code of the answers to this question.
And when I tried this response and maxed out most of the manipulators, this is what I got.
What went wrong that the errors are ...
2
votes
1answer
306 views
Inconsistent initial and boundary conditions
I have a 4th order nonlinear PDE with the following BCs and IC:
...
5
votes
2answers
120 views
“Not a valid Filling specification” error
I have a function, which plots the given function array f. This is a part of the function:
...
6
votes
2answers
243 views
How do I make NotebookEvaluate work inside Button?
The following creates a button to select a notebook to run. When the button is pressed it seems that Mathematica finds the notebook but cannot evaluate it. The following error occurs
Could not ...
5
votes
2answers
419 views
Error (NSolve::ifun) when using NSolve, I need help interpreting the error
I wrote the following code to observe how the solutions to the equation $(e^{i a})^2 = e^{i b}$ varied as $b$ varied between 0 and $2\pi$
...
10
votes
1answer
213 views
Check does not interrupt evaluation of the expression when a Message is emitted
On the surface, Check looks like a good method to use when you need to abort the evaluation of an expression whenever a Message ...
8
votes
4answers
705 views
What is the cleanest way to prevent divide-by-zero warnings?
If I evaluate {1, 2, 3, 4}/{5, 6, 0, 8}, obviously I get one warning:
...
7
votes
2answers
468 views
What do I do when I get an “Iterator does not have appropriate bounds” error?
I used this as input
Table[600851475143/i , {i, 1, 600851475143}]
but got an error
...
3
votes
1answer
166 views
FunctionInterpolation Errors / Question re Evaluation Order and Options
I have using Mathematica functions that takes a Cartesian coordinate relative to the Earth (xyz) and converts it to a latitude, longitude, and altitude (lla). And here it is:
...
10
votes
1answer
260 views
Finding a Specific Line in a Package
In a package I am developing, I accidentally left this line
Protect[
uncompleted prior to running the package. Mathematica produced this error message
...
12
votes
2answers
1k views
Importing a large Excel file
I'm trying to import a simple Excel file containing 94,000 rows and 52 columns of various types, mostly Reals. It's a 38-MB file. I get this super helpful error ...
7
votes
1answer
188 views
What does MaxStepFraction do?
I find that with NDSolve[...] while solving a partial differential equation, changing the MaxStepFraction from ...
2
votes
2answers
511 views
NMinimize with defined function call getting error NMinimize::nnum
I want to call the NMinimize function for my own defined calculations but I got an error. Below is a simple example.
...
17
votes
4answers
738 views
Why does MatrixForm affect calculations?
This is a really newbie question, but it has me confused. Why does this code work without // MatrixForm and doesn't work with ...
4
votes
2answers
156 views
2
votes
1answer
530 views
Mathematica Can't Evaluate This?
I am trying to find the inverse function of $\frac{\ln{x}}{x^2}$ in Mathematica. I am using the Solve[] function to find the inverse (yes, I know about ...
17
votes
2answers
598 views
Mathematica Debuggability
One of the things that I really dislike about Mathematica is its lack of debuggability compared to many other programming languages. Some of the problems arises from the functional nature of ...
0
votes
0answers
210 views
Mathematica as Windows Service — Problem with Error Messages
I have installed Mathematica in a Windows machine as a service using srvany and now I have problems with error messages — they don't get written in logs file like they should!
For example, if I do:
...
2
votes
1answer
245 views
7
votes
2answers
387 views
Table function with Part[] call misbehaving, but only after initial startup of Mathematica
I am getting errors like:
Part::partd:
Part specification standardBasis[[1]] is longer than depth of object.
with the following Manipulate expression:
...
7
votes
3answers
923 views
General::ivar is not a valid variable when plotting - what actually causes this and how to avoid it?
I was just evaluating a couple of expressions and started to get errors like this:
...
21
votes
1answer
271 views
which is better, using Assert[] or manual checks on arguments and other computations?
I never used Asserts in Mathematica, but trying to see what advantage they have over just argument check and additional definitions of the function to capture unwanted input.
For example, which one ...
