Questions tagged [warning-messages]
The warning-messages tag has no usage guidance.
1,208
questions
0
votes
1answer
39 views
ArgMax : Variable Domain Error
I'm attempting to utilize the ArgMax function, but am receiving the error "ArgMax::vdom: Variable domain ... should be either Reals or Integers."
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0
votes
1answer
44 views
NIntegrate allegedly evaluating to non-numerical values
I'm getting non-numerical-evaluation error messages despite not having any symbolic variables in my code.
Here's a MWE representative of what I'm doing:
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8
votes
1answer
309 views
What should I make of “Simplify: Time spent on a transformation exceeded -4.03955*10^12 seconds”?
Running version "12.0.0 for Microsoft Windows (64-bit) (April 6, 2019)", in case that matters. I fed Mathematica the command
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0
votes
0answers
25 views
is there a way to turn off ALL (error and otherwise) mathematica messages in a notebook? [closed]
I have a Compiled function.
This function needs to be integrated numerically with WorkingPrecision-> 100.
Then, mathematica complains that the function is known with less than WorkingPrecision and, ...
0
votes
0answers
67 views
How to change Machine Precision digits to meet the tolerances
I am trying to solve for Tcm and Mag by solving nonlinear equations using FindRoot command using following code:
...
0
votes
1answer
54 views
ParametricPlot3D with variable plot limits
I would like to use ParametricPlot3D in the following general way:
ParametricPlot3D[\[Sigma][u,v],{u,0,2Pi},{v,-f[u],f[u]}].
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3
votes
1answer
66 views
Even though the fit seems correct, NonlinearModelFit throws a failed convergence error
Consider the following data
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0
votes
1answer
79 views
Differences in Mathematica's behaviour with identical functions
I have three functions whose identity was verified, but WM doesn't behave itself equally with them.
The code is:
...
0
votes
0answers
34 views
Print[] text in the style of Message[]
I would like to imitate the aesthetic style of Message[] text, but using Print[], and customising the colour. The output I ...
0
votes
1answer
68 views
Errors relating to MatrixFunction
I ran this and got some errors. Does anyone know how to solve this?
First I want to caluclate A^2(A+I) with ...
0
votes
1answer
39 views
Mathematica Not Loading
Mathematica 12 was working fine, but after recent updates (Nvidia drivers and Windows 10) the kernel will load happily, but when trying to load Mathematica the screens hang and I'm greeted with a ...
1
vote
0answers
43 views
How to apply percent error to list of data [closed]
Say I have a list of data. data = {1,2,3,4,5} and those data values were measured with an instrument that has a listed 3% error. I can apply this per value with ...
2
votes
0answers
54 views
How to produce an error message for each argument?
I want to print a helpful message for every wrong input. How do you compactly implement a function with custom pattern constraints, default values and error messages for each argument separately? For ...
1
vote
1answer
100 views
Solve using PolyGamma function
I am trying to solve for the value of y.
My code is:
x = 0.165;
f = -Log[y] - PolyGamma[0.5 + 0.2*(x/y)] + PolyGamma[0.5];
Solve[f == 0, y]
Running gave me
...
1
vote
1answer
40 views
The expression Cycles[{}] cannot be used as a part specification?
I am trying to do the following:
S = GroupElements[SymmetricGroup[4]];
Nest[PermutationProduct[S[[2]], S[[#]]] &, 2, 3]
But this yields the following errors:
...
1
vote
2answers
156 views
I have some problems with NDSolve, my ODE is about Dynamics of Robot mechanism, and my BVP cannot be solved by NDSolve
Here are the parameters which are given in the task
g = 9.81;
h = 0.009;
m1 = 4.5;
m2 = 4.25;
m3 = 3.3;
L2 = 1.2;
L3 = 0.8;
\[Theta]CoM1 = 0.2;
Matrixes of the ...
0
votes
2answers
82 views
Piecewise function within a vectorplot
I'm trying to do a vector plot with some code that includes piecewise functions and I keep getting the following error:
Part::partw: Part 1 of {} does not exist.
Here is the code:
...
0
votes
0answers
18 views
How do I set the “UnpackMessage” to be “True” permanently?
Looking at the top answer here, talking about packed arrays in Mathematica, I have realized that very often Mathematica silently unpacking an array explains mysterious slowdowns in my own code as well....
0
votes
0answers
25 views
step size effectively 0 error in ndsolve
I am trying to solve the following equations in Mathematica using NDSolve.
1.Given Data
...
0
votes
1answer
21 views
Outputting a warning message tag as a string, from a function running inside of a table
I want to print the messages or warning message tags for NonlinearModelFit when batch fitting data. For example, I will import and fit my data with something like
<...
0
votes
2answers
39 views
Warning when confluent hypergeometric function HypergeometricU is wrong?
From the definition as an integral (HypergeometricU/details), this function must be positive. However, it gives negative numbers in some cases with no warning of a potential error. For example,
In[...
0
votes
0answers
21 views
How to copy a number from an error message? [duplicate]
Is there any way to copy a number from an error message and assign it to a variable, without manually doing it?
For instance, I am trying to solve some coupled Differential equations as follows:
...
3
votes
2answers
127 views
Why does f[set_]:=AppendTo[set,5] not work when applying f to a set?
The following code works
ccc = {};
AppendTo[ccc, 5];
ccc
and gives the output {5}
However, the following code does not work:
<...
0
votes
1answer
49 views
Restore messages function to the default ones
Times ago I used the command Off[NDSolve::tag].
Now I've been forgetting which message I removed and I would like to restore it.
Someone knows if is there a way to reset all the default messages ?
1
vote
3answers
146 views
Error with NIntegrate of a two variables integration
This is mathematica code for my integration,
...
3
votes
1answer
61 views
“Data not in notebook; Store now”
I'm getting a "Data not in notebook; Store now" message. Where is this data stored? I looked at my working directory and found nothing.
I searched and could not find answer to this question ...
0
votes
0answers
24 views
My mathematica is broken, can someone help? (error “Kernet is not responding to Dynamic Evaluation”)
I have been doing some intensity plots on mathematica and it was working fine. It stopped responding when I tried to run 'Animate' command to try to see a simulation of the same intensity plots that I ...
0
votes
1answer
39 views
Define a function with a custom warning message
Is it possible to define a function with a custom warning message ?
For example,
...
1
vote
1answer
57 views
ClassifierMeasurements returns strange errors
I am following the example listed on this page ResNet 50 to train a custom classifier and inspect the outcome with ClassifierMeasurements. My training set has 443 images from more than 30 classes. The ...
0
votes
1answer
80 views
Finding the exact symbolic formula for a function defined recursively
Let me introduce the problem.
I have the following functions;
The first one is defined recursively
$h(i,j):=\frac{i-1}{j+1}h(i+2,j-2)$ and $h(i,0)=1$ where $i$ and $j$ are even integers, greater than $...
0
votes
0answers
24 views
A ChannelListen error message appears every time I start Mathematica. How can I stop this?
Every time I start up Mathematica, I am greeted with the following message:
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3
votes
1answer
48 views
warning in Position + IntersectingQ
Why there is a warning message (with correct output) for the following code ?
...
1
vote
1answer
76 views
Plot Styling Errors (PlotLabel, PlotTheme, Inset not appearing)
Question:
I'm trying to pull together a graph with labelled axes, a title, and an inset box with information relating to the plot such as the y-intercept (A in this code) and it's uncertainty. However,...
2
votes
0answers
45 views
DAE solver fails for system of coupled partial differential equations
I am trying to run the following code to solve a system of coupled differential equation:
...
0
votes
1answer
44 views
Part Specification is longer than depth of object & Transposing Errors
In trying to recreate results from another question I had asked (here)
Code is:
...
0
votes
1answer
70 views
Why does FindDistributionParameters[] fail to converge for this distribution? [closed]
During testing my code for calculate parameters
The following exception is thrown:
...
0
votes
1answer
46 views
How to refer a solve answer to NDsolve [closed]
I don't know how to refer a solution of Solve to compute it in NDSolve, here's my code
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4
votes
1answer
67 views
Plotting an InterpolatingFunction outside its domain doesn't raise error messages
Let's make an InterpolatingFunction:
if = Interpolation[Transpose[{#, Sin@#} &@Range[0, 4, 0.1]]];
As expected, evaluating ...
0
votes
1answer
91 views
Can you explain strange behaviour of a plot masked with $(2*(-1 + Abs[x]))/(-2 + Abs[Abs[-1 + x] - Abs[1 + x]])$?
I made a code which draws a plot of $5-x^2$ masked with a kind of rectangular function in order to brake the branches of parabola at the points ...
5
votes
2answers
275 views
How to plot multifactorial function?
The multifactorial function can be extended to the reals (see TheSimpliFire answer) like so:
It follows that we can extend the multifactorial function to the reals ...
0
votes
0answers
24 views
NArgMin with Root functions
I'm trying to minimize an error function sumt to find some parameters S, s0, si :
...
0
votes
0answers
59 views
NMinimize - Strange “function value is not a number” error
I am seeing strange behaviour in some code I have written that uses NMaxmimize. Here is a minimal working example:
...
1
vote
0answers
56 views
Warnings while solving a system of coupled differential equations
I have a system of differential equations, given by
...
1
vote
0answers
29 views
Manipulate Error [closed]
I have the following code, which allows me to compile specific Manipulate plots on a separate plot. Unfortunately, I have a small syntax error which I can't seem to ...
3
votes
1answer
74 views
NIntegrate fails to give non-numerical value error, instead returns zero
When I evaluate
NIntegrate[a(x - y)^2, {x, 0, 1}, {y, 0, 1}, AccuracyGoal -> 8]
Mathematica returns 0 without giving a non-...
4
votes
0answers
95 views
DynamicModule Error when assigning Nothing to variable
Assigning Nothing to a variable inside Module works as expected:
...
0
votes
0answers
40 views
Error in function `WordList` in version 12.1
I want to list the number of different kinds of words in the English dictionary (Version 12.1 for Win10 (64-bit)):
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0
votes
0answers
54 views
Writing a function that has two inputs
Write a function called DOTPRODUCT that has two inputs u and v,
assumed to be two non-empty lists of numbers of arbitrary length,
checks that the two lists are of equal length, prints an error message ...
1
vote
1answer
34 views
3
votes
1answer
77 views
DSolve fails on initial value problem of 1st order ODE
I've been trying to solve this initial value problem using DSolve[]:
$$
\frac{dy}{dt}=1+t\space \sin(t\space y),\quad y(0)=0, \quad t=[0,2]
$$
...
