# All Questions

114 views

### FindFit giving weird values on a logistic equation

I was trying to fit a set of data onto a logistic equation, however it ended up telling me that the initial value when $t=0$ is greater than the maximum limit, thus I am led to believe that it isn't ...
211 views

### List manipulation after importing txt-file

I have some problems converting data which I imported from a txt-file into proper Mathematica expressions. After importing my data looks like ...
29 views

### Need help with phase diagram in mathematica [duplicate]

Sketch the phase diagram for systems with the following velocity functions where a and b are constants with b > a > 0 a. dx/dt = a, dy/dt = b b. dx/dt = a, dy/dt = x Please can someone show me how ...
187 views

### How can I draw this particular phase diagram in Mathematica? [duplicate]

Sketch the phase diagram for systems with the following velocity functions where a and b are constants with ...
64 views

### SmoothDensityHistogram with logarithmic density

Is there a simple way for making SmoothDensityHistogram plots have logarithmic scaling for the density? With DensityHistogram ...
40 views

484 views

### Implementing a Beeswarm plot in Mathematica

I am looking for a Beeswarm plot implementation in Mathematica. Consider the following data: ...
134 views

### How to do Cases with multiple related patterns?

I would like to write a function similar to Cases, but can search for a group of related patterns together. For example, ...
125 views

### HTMLEncode a string for webMathematica

Is there a native Mathematica way to convert a string like "<select></select>" into ...
93 views

### Plotting lists, exact color values

I read some descriptions of similar problems but I cannot make them work in my example, I don't know why. I have list of 3 dim values to plot: x, ...
47 views

### Poincaré section

i try to create a Poincarè section of the restricted three body problem. I use a modify version of this Mathematica example http://reference.wolfram.com/mathematica/example/PoincareSections.html . But ...
44 views

### Defining a function with global parameters

What I would like to do in Mathematica is something like f[x_] := a x g[a_] := NIntegrate[f[x], {x, 0, 1}] But then of course I get ...
49 views

### How to use Select to exclude a single element which I can control? [duplicate]

I have code which inserts an expression into lists that I need to remove. I can insert anything I want, a string, variable, or number, into the lists. Suppose I insert the number 13 as my blacklisted ...
88 views

### Mathematica rule to express exponentials as multiplication

I'm sorry if this has been asked before, but it is a very simple question and I would imagine it shouldn't be terribly hard for someone that knows to answer. I'm essentially trying to tell ...