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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7
votes
2answers
64 views

Detect Messages within an expression without losing the return value?

I know that Check[expr,failexpr] is a mechanism to catch messages. The problem with it is that if a message is generated within ...
5
votes
2answers
59 views

Error when implementing StartProcess[] in loops (Do, While, Table)

I'm using Mathematica to control another program (Surface Evolver) through the terminal (ie using StartProcess[]; and ...
5
votes
1answer
64 views

Error messages from TensorContract and TensorReduce

I am struggling with a few errors when using symbolic tensors. I am using mathematica 9.0.1.0, linux x86. The following code generates what seems to me an incorrect tensor, this is the smallest ...
7
votes
2answers
117 views

Catching error in middle of evaluation of compiled function

I have programmed and Compileed a complicated numerical function. The function has singularities (i.e. are infinite) at certain input numerical values. I need to ...
4
votes
1answer
89 views

Sentiment analysis of tweets

I want to use Mathematica for a sentiment analysis on tweet-messages. For that purpose i selected several tweets. Each tweet is interpreted by myself as positive (pos) of negative (neg). For example: ...
3
votes
1answer
116 views

How do I format Compile[] correctly?

My Mathematica skill is still rusty, so kindly bear with me. I'm having problem formatting expression to compile the function correctly: $\sum _{g=1}^G \sum ...
2
votes
1answer
26 views

Replace error messages with zeros in a table

I'm working on a project of Nuclear physics and I'm passing results of a simulation program to mathematica via a txt file. I then read the values I need to read and plot them. The problem is that ...
2
votes
0answers
30 views

Show error messages from collapsed sections

I've got a fairly long notebook. I like to have most of the sections collapsed. If I evaluate the entire notebook I don't see errors in the collapsed sections unless I expand them. I did see that I ...
-1
votes
1answer
21 views

Iterator bounds error when defining function [closed]

It's been a while since I've done any multi-line functions in Mathematica, so maybe I'm just missing something. I've created the following function, and I immediately get an Iterator bounds error when ...
6
votes
2answers
173 views

Interpolating an Antiderivative

I'd like to be able to make InterpolatingFunctions for antiderivatives of functions that can't be integrated symbolically. However, the following code returns several error messages: ...
3
votes
0answers
53 views

NIntegrate::ncvbr: How should we interpret and handle this error not mentioned in any documentation?

I have some user-defined module describing my integrand which has to be computed numerically (it's much more complicated than this but bear with me): ...
2
votes
1answer
55 views

Evaluating $n$-th derivative of a function at a given point [closed]

I have a function defined as follows: \begin{array}{ccccc} g & : & [-1,1] & \to & \mathbb C \\ & & x & \mapsto & \frac{1}{(x-z)^k} \\ \end{array} where $k$ is a ...
2
votes
0answers
50 views

CUDALink Error: A CUDALink kernel timed out?

I'm following the CUDALink tutorial [ http://reference.wolfram.com/language/CUDALink/tutorial/Introduction.html ] and everything is going fine until I get to the part that calls CUDADot on the ...
1
vote
1answer
69 views

How to suppress a warning message

If I change $MinPrecision before running ListPlot[{{1, 2}}], there will be a warning in Mathematica 10. But there is no warning ...
10
votes
3answers
94 views

How to limit number of user-defined messages issued per evaluation

I have written code such that if it runs into a particular function, a warning message is issued. However, it is common for the program to call this function several times in a single evaluation, but ...
2
votes
0answers
60 views

Two problems with NDSolve when using Method -> Projection

I tried to solve a system first order differential equations together with a constraint equation. I use the Method -> Projection to check if the constraint holds ...
5
votes
4answers
115 views

Passing a variable messages list to Quiet

I'm trying to build a Verbose option into some code but I'm having trouble passing to a Quiet statement a variable list of which messages I want to suppress. My ...
5
votes
2answers
85 views

Automatically detect largest interval over which NDSolve can find a solution

Question: Consider the following numerical resolution: NDSolve[eqn, {x1[t], x2[t], y[t]}, {t, tmin, tmax} where eqn, ...
2
votes
0answers
59 views

Maximizing Large Multivariable Function over Region with Parameter Constraints

Brand new Mathematica user here. I have a complicated function to maximize, and thought I would try software like Mathematica instead of taking derivatives by hand. I found some Mathematica ...
8
votes
1answer
240 views

Why is Dataset upset by division by zero?

Consider this example: ds = Dataset@Transpose[<|"a" -> {1, 2, 3, 4, 3, 2, 1}, "b" -> {6, 5, 4, 3, 2, 1, 0}|>, AllowedHeads -> All] Now say I ...
0
votes
1answer
52 views

Restarting Mathematica causes an animation to fail to run [duplicate]

I've tried animating two different sets of 3D plots. Interestingly, one plot will always work, regardless of whether I restart Mathematica, yet another plot will only work in its current Mathematica ...
2
votes
1answer
87 views

a mysterious error in multiple symbolical integration

I am trying to do the following integration: ...
2
votes
0answers
71 views

How to handle infeasible points in FindRoot?

I am calling FindRoot[f[x,y],{{x,xInit,xMin,xMax},{y,yInit,yMin,yMax}}] where for some points {x,y}, ...
3
votes
1answer
98 views

The front end encountered an error while processing a “NotebookPredictions” packet

I occasionally get the error The front end encountered an error while processing a "NotebookPredictions" packet. I cannot find any documentation for this error message online. It does not ...
4
votes
3answers
145 views

Incompatibility of Row and TeXForm

Bug introduced in 9.0 Update: Since no one has been able to give a reason for this change in behavior or provide a solution I am tagging this as a bug. Please report it to Wolfram Support if this ...
2
votes
4answers
130 views

How to plot a graph from it's incidence matrix?

I'm using Mathematica v9 and am trying to draw a graph by using it's incidence graph, but it won't draw it, which occurs an error "is not a valid incidence matrix.". But I've checked my matrix, and ...
2
votes
0answers
54 views

Export Notebook causes an INTERNAL SELF-TEST ERROR: Files2|c|1713 message

On my machine (Windows 8.1) and M10 the following two lines, that must be run on an already saved notebook, ...
2
votes
1answer
110 views

Error when attempting to save Notebook. Cause and solution?

I am experiencing an error attempting to save a modified Notebook in Mathematica 10 under Windows. The error I get is: ...
1
vote
1answer
60 views

Warning and Errors during Compile

I defined a compiled function cf = Compile[{{x, _Integer}, {n, _Integer}}, z = (n^x); Binomial[n, #]* StirlingS2[x, #] *(#!)/z & /@ Range[x]]; and I ...
0
votes
1answer
44 views

Assigning a given value if a function returns an error [duplicate]

This question has to do with error handling, I guess. I am using Brent's Method in order to numerically find the root of a function. This is just an example of what I am doing: ...
0
votes
0answers
56 views

Error message LinkObject::linkd when calling TextRecognize

I am getting the message LinkObject::linkd: "Unable to communicate with closed link LinkObject["E:\Program Files\Wolfram ...
0
votes
0answers
63 views

Geometric Transformation not working - degenerate points?

I've successfully used FindGeometricTransformation to project the simplex triangle onto the x-y plane: ...
1
vote
2answers
52 views

Print argument of function that exceeds $RecursionLimit

Is there a way to print the argument of a function which results in a $RecursionLimit::reclim error? As an example, cosider the code ...
0
votes
2answers
70 views

Update: Interpolation error message? [closed]

I have the following data that needs to be analyzed : data = ToExpression@Import["http://pastebin.com/raw.php?i=8XKGYvSy", "Data"]; I have 6 sets of coordinates ...
1
vote
1answer
144 views

Error message: Coordinate index 0 is out of range for the enclosing GraphicsComplex

I am unable understand following error message: Coordinate index 0 is out of range for the enclosing GraphicsComplex. How to fix it? Attached data here: pts and polygons. See also end of question. ...
1
vote
1answer
294 views

Plot has red 'film', no error message

I am encountering really strange behavior: I wrote a function that plots values some data. After executing the code the resulting plot has the red 'error' colour, but only momentarily (maybe 0.1 sec). ...
0
votes
2answers
53 views

How to output (anything) if any error happens

I have long code which goes through iteration process. some times I get error messages. I want to get the iteration numbers (or any kind of output indications) when errors happen. for example, how ...
0
votes
0answers
17 views

“No file exists for resource PasteTemplateString”

I am running Mathematica on a Raspberry Pi and the above error message comes up virtually every time I press ctrl + shift + K to view the suggested functions and ...
1
vote
1answer
52 views

Series and that old ivar error

I am trying to compare plots of the function (1+x)^{1/3} and its power series. The code for the power series generates an error message referring to an invalid variable: 'General::ivar: -1.09993 is ...
0
votes
0answers
32 views

Data Fitting with xerrors and yerrors using findfit [duplicate]

I'm trying to fit data with xerror and yerror using "Findfit", so i'm trying the same form than in tuto : ...
0
votes
1answer
26 views

How to output local variables when error message is generated without interrupting evaluation?

I am running a calculation to generate a dataset. I use several iterations to sweep over a parameter space. A few times an error message is generated (which is not the problem per se). Is it possible ...
0
votes
1answer
76 views

Problems with For statement

I'm trying to iterate some expression through for loop: ...
0
votes
2answers
267 views

How to fix this error : SetDelayed::write: Tag Plus in (<<1>>)[x_] is Protected.?

I don't get the meaning of the sign <<>> and also from which line the error is coming as I have a program of more than 30 lines with many defined functions without using "Module" . Is not there ...
1
vote
1answer
46 views

error message DSolve::“bvnul”

...
9
votes
2answers
1k views

Why is this semicolon in red?

I have a piece of code that works well, but when I put a semicolon after a plotting statement, the semicolon appears in red. What's the error?
0
votes
1answer
71 views

Trouble fitting an explicitly complex model with the TransformedFit package

This is follow up from a previous question in which @Oleksandr R. suggested the use of a package he developed for splitting a model and data into real and imaginary parts to avoid a problem with ...
1
vote
1answer
61 views

Turning Off Error messages locally

I'm trying to turn Off an error in an expression. ...
0
votes
1answer
77 views

Easy NMinimize does not converge

I try to minimize the following for a>0: f[a_] := Gamma[3]*a^(-3)*(Integrate[Exp[-u]*(u - a)*1/u, {u, a, Infinity}])^(-1) I put in ...
4
votes
1answer
122 views

How can I prevent a Plot expression from evaluating points forbidden by its RegionFunction?

I just ran into this and it had me scratching my head for a good while. Say I have a function which may produce error messages for certain inputs, like e.g. ...
2
votes
2answers
130 views

Getting messages Rest::norest and Divide::indet from ContourPlot3D

Note: The bug described in this post is found in Mathematica version 9 and seems to have been fixed in version 10. Ok I don't know if it's a bug or what, but here's what I found: If I use this ...