# All Questions

159 views

### How to plot inequalities taking into account that points must be integers and not reals?

I have solved with Mathematica 9 the following integer inequalities using Reduce: ...
608 views

### Normal lines to surfaces or planes in a 3D plot

How do I make the normal line to a plane actually look perpendicular? ...
553 views

### How to change an expression to Fortran90 form?

I have a large expression produced by Mathematica. To use this expression in my Fortran program I need to change it to a Fortran90 form. I am not satisfied with the ...
124 views

When using the default configuration of the Lightweight Grid Manager, anyone connected to the same internal network where the grid severs are can launch kernels on the grid. What possibilities are ...
462 views

### How can I get a running sum for a list?

I've got following data I'm reading from a file: ...
210 views

### Getting R textual output into Mathematica

I use Mathematica with R because I am able to keep my code and output organized with the notebook interface. Although I can get R structures into Mathematica using REvaluate, I can't figure out how to ...
332 views

### Log-scale histogram bug

Not really a question, more a solution to what I call a bug in mathematica v8(.0.0.4). I already sent a bug report to Wolfram. Problem The documentation for the Histogram-function explains the ...
363 views

### Filter list based on date

What I would like to do is remove entries from a list of instrument data when it is in maintenance. The maintenance data I have is a series of dates which look like this; ...
388 views

### How do we solve N-Rooks variation using primes?

Using a $p_n$x $p_n$ matrix, how can we solve the N-Rooks problem to find a prime in every row and column? ...
912 views

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195 views

### Is it possible to specify a context-sensitive, “depth-agnostic” rewrite rule?

I'm using the term "depth-agnostic" in this post to describe structural patterns featuring a "target" sub-pattern that can occur "at any depth" relative to one or more "context" sub-patterns. As a ...
438 views

### Specifying string patterns in DeleteCases

It seems that DeleteCases is not compatible with string patterns, at least directly (see, for example, this question). Is this true? If so, why is this the case? ...
444 views

### Is there an easy way to put time ticks on a parametric plot?

I have a parametric plot showing a path of an object in x and y (position), where each is a function of t (time), on which I would like to put a time tick, every second let's say. This would be to ...
190 views

### Internal Representation of ?name and ??name

Code FullForm[Hold[?name]] Syntax::bktmcp: Expression "Hold[?name]]" has no closing "]". Syntax::sntxi: Incomplete expression; more input is needed . Question ...
2k views