Questions tagged [warning-messages]
The warning-messages tag has no usage guidance.
1,178
questions
2
votes
2answers
919 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
. ...
15
votes
1answer
12k 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 ...
7
votes
2answers
3k 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:
...
19
votes
4answers
2k 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
576 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
544 views
Error Interpretation in NIntegrate
I am using a recursion algorithm developed by Migdal for Lattice Field Theory, and I have the following code:
...
11
votes
1answer
38k views
What does “Tag Integer is Protected” message mean?
(Newbie question)
For every function I define I get this message:
When I close and reopen Mathematica, and re-enter the function definition, I don't get the message anymore. What does it mean?
5
votes
1answer
126 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 tilted. ...
4
votes
1answer
816 views
Inconsistent initial and boundary conditions
I have a 4th order nonlinear PDE with the following BCs and IC:
...
2
votes
1answer
163 views
Strange setting in FormatValues[MakeExpression]
My system is: 8.0 for Mac OS X x86 (64-bit) (October 5, 2011)
When I start Mathematica and call
FormatValues[MakeExpression]
I get the following output:
...
5
votes
2answers
319 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:
...
23
votes
6answers
21k views
How to get rid of warnings when using Solve on an equation with inexact coefficients?
When I solve this equation in Mathematica 8, I can get the right answer, but with some uncomfortable warnings.
Equation:
...
6
votes
2answers
952 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 ...
6
votes
2answers
7k 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 $2\pi$
...
14
votes
4answers
7k 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:
...
9
votes
2answers
6k 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
...
22
votes
2answers
9k views
Can Reduce *really* not solve for x here?
Sometimes I get the feeling I'm just flailing blindly with Mathematica. Is solving for $x$ in the equation
$$ \frac{\cosh (x/2)}{x} = \sqrt{2} $$
really beyond the scope of Mathematica? I try to ...
4
votes
1answer
396 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:
...
15
votes
1answer
2k 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
...
38
votes
7answers
8k 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
905 views
What does MaxStepFraction do?
I find that with NDSolve[...] while solving a partial differential equation, changing the MaxStepFraction from ...
4
votes
2answers
4k 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.
...
48
votes
4answers
10k 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
608 views
2
votes
1answer
3k 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 ...
2
votes
1answer
2k views
8
votes
2answers
1k 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:
...
27
votes
3answers
22k 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:
...
