Questions tagged [warning-messages]
The warning-messages tag has no summary.
1,484 questions
56
votes
4
answers
13k
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 ...
- 705
38
votes
7
answers
9k
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 ...
- 7,860
36
votes
2
answers
18k
views
Mathematica stuck in "running" for every calculation I attempt, kernel error
Bug introduced in 11.1.1 and fixed in 11.1.1
Bug was caused by a paclet update and fixed by a paclet update.
I downloaded Mathematica this morning to do an implicit polar plot. I attempt to run the ...
- 461
35
votes
3
answers
2k
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 ...
- 47.2k
32
votes
3
answers
32k
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:
...
user236
32
votes
5
answers
63k
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 Protected. ...
- 5,411
28
votes
5
answers
3k
views
How to catch complete error message information, including the message text as it would be printed?
If I evaluate this expression:
Module[{}, 1/0;0^0]; msg = $MessageList
I get:
...
- 26.5k
26
votes
6
answers
25k
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:
...
- 2,501
25
votes
2
answers
4k
views
Using a compiled function inside NIntegrate gives "CompiledFunction::cfsa" message
The following function is defined for Real input:
...
- 1,617
24
votes
6
answers
2k
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 ...
- 2,238
24
votes
3
answers
5k
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 at ...
- 12.9k
23
votes
2
answers
10k
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 ...
- 465
21
votes
1
answer
760
views
ClearAll::clloc - "Cannot clear local variable x" in Block[{x}, ...] - why?
Block[{x}, ClearAll@x]
ClearAll::clloc: Cannot clear local variable x.
The documentation just says
An error occurs because ClearAll cannot be used with a ...
- 5,829
20
votes
4
answers
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 ...
- 10.6k
18
votes
5
answers
9k
views
DSolve not finding solution I expected
Try to solve the following ODE via DSolve
$$
\left\{\begin{aligned}
y'(x)+2 y(x) e^x-y(x)^2 &= e^{2 x}+e^x \\
y'(0) &=1
\end{aligned}\right.
$$
The ...
- 3,079