Linked Questions

17
votes
2answers
395 views

Why Infinity /. _?(# < 6 &) -> 0 replaces Infinity with ComplexInfinity?

Suppose I define a matrix: mat = { {Infinity, 4, 9}, {6, Infinity, 10}, {8, 9, Infinity} }; Now I want to replace all values smaller than ...
14
votes
2answers
2k views

How to find out where an error occurs?

I got this error when using Mathematica: ...
5
votes
2answers
174 views

Is there a way to accelerate buffering to the screen?

I have an application that does a bunch of small computations, mostly Table management, and logic around loops. It takes seconds to execute. However, when I turn on debug (a variable I set for ...
4
votes
2answers
147 views

TraceScan output with input/output in same order as TracePrint

I would like a version of TraceScan that gives me the ability to see what the trace pattern evaluated to, but prints output in the order that ...
11
votes
1answer
146 views

Trace of -{1} expression

I'm trying to understand Trace. Usually it doesn't repeat but it adds {-1,-1} for his simple expression after having a correct ...
8
votes
1answer
500 views

Visualizing nested lists for easier human understanding

When interacting with Mathematica, I often find myself staring blankly at waves of curly braces, trying to understand how data is organized hierarchically. For example, the beginning of the result to ...
7
votes
1answer
257 views

Why can't I pattern match Dt?

A simple question: MatchQ[f[a], f[x_]] (* True *) MatchQ[D[a], D[x_]] (* True *) MatchQ[Dt[a], Dt[x_]] (* False *) Why doesn't the last test succeed? Is this a ...
3
votes
1answer
212 views

How to summarize an expression

Is there a similar command as str in R in Mathematica? ...
2
votes
1answer
175 views
0
votes
1answer
434 views

How does Mathematica interpret a expression?

I'm a beginner to Mathematica. I'd read several document. But I still have a problem. For example, every expression in Mathematica are of the form ...
3
votes
0answers
84 views

Displaying outcome of Trace [duplicate]

Is there a better way to display Trace output? Parsing could be provided to separate blocks of the computation by an extra line. Trace produces a large chunk of unbroken output that I copy into a new ...
2
votes
0answers
159 views

Find where an error occurred in a bunch of command line scripts

I have been using my intuition to solve errors in my Mathematica scripts. But when calculations got more complex and I started getting errors involving code in more participating scripts (a script ...
1
vote
0answers
68 views

Is there packages can help read, analyze or understand MMA codes? [closed]

Sometimes, I think that it's difficult to learn high level codes, or even when looking back on some long lines of codes I myself had written, espectially when lots of pure-functions was used, so I'm ...
1
vote
0answers
143 views

Debuging in Mathematica [duplicate]

Description I have using Mathematica to solve all kinds of problems that encountered in my study. However, the function that I define to solve specific problem is not always right, in other words, it ...
0
votes
0answers
36 views

Can we find a way to see how Mathematica does calculation? [duplicate]

Sometimes when we have an expression to calculate, it is the kind of calculation that we do not know how to calculate by ourselves. We use Mathematica to calculate the expression, and Mathematica ...

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