# All Questions

457 views

### Label multiple edges between same vertices

I have a simple graph with multiple edges between two vertices, say: Graph[{ Labeled[a -> b, "A"], Labeled[a -> b, "B"] }] Unfortunately, Mathematica ...
289 views

### Filling to Axis as Arrow

In version 9 I could do the following with the output as shown. ...
85 views

### How to input a dynamically changing parameter in NDSolve? [closed]

I am trying to solve a system of DEs with additional conditions, and one condition depends on a parameter. Let us consider the following example: ...
75 views

### Simplification of algebraic expression

I found an entry of a matrix from two different methods using mathematica. Which are given as; g/(Sqrt[2] Sqrt[1 + g^2 - Sqrt[1 + g^2]]) and ...
628 views

### Using DiscretePlot to graph the Riemann sum of a parabola

I want to graph the Riemann sum (upper sum) of $y=x^2$ with $1\leq x\leq 4$ using 6 rectangles. I want the rectangles to be green. On the Wolfram Mathworld website, I can render exactly what I want ...
73 views

### Define column types in a Dataset - Failure on append and Typesystem

I have a basic function that populates a Dataset according to user specified parameters. ...
152 views

### How to apply # on different lists? [duplicate]

If I have list1 = {1, 2, 3, 4} list2 = {5, 6, 7, 8} How can I do so, that function[#1, #2] takes ...
372 views

83 views

### Programmatically selecting non adjacent Cells

One can of course Ctrl + MouseClick to select 1st and 3rd cell. But how to select non adjacent Cells programmatically? I was looking for neat examples here or in ...
205 views

### How would I obtain a list of column names in a Dataset?

I really love the addition of Dataset to Mathematica. I would like to write a basic utility function that exports a Dataset to Excel. Is there a way to get a list of column names from a Dataset?
226 views

### The default ColorFunction of DensityPlot before v10?

The default ColorFunction of Plot, Plot3D before v10 is respectively mentioned here and ...
692 views

### Excessive memory use by Mathematica kernel in 10.0.2 after executing simple commands

Bug introduced in 10.0 and fixed in 10.1 Warning: the code below may hang your system if you have the Suggestions Bar enabled in Mathematica < 10.1. When issuing the following simple ...
337 views

### What is the purpose of InternalLocalizedBlock?

I have come across the (internal) use of of the function: InternalLocalizedBlock I am trying to determine its purpose. It seem to behave like ...
99 views

### Can GeoLabels be controlled?

I am making maps of stuff like population density and would like to add labels but GeoLabels makes it awfully busy. Here is an example. I would like to be able to control what gets written, the color, ...
96 views

### How can I make new outline cells be created above the current cell on return?

When you hit enter inside an item styled cell (e.g. Cell["", "Outline1"]), a new cell of the same type is created underneath the cell you are currently editing. ...
50 views

### “Meta-matching” patterns [duplicate]

The title refers to the general problem of writing patterns to match pattern-containing expressions (hence "meta-match"). Here's an example. In the following rules ...
685 views

### SQLSelect from Microsoft Access database tables with international character set

I am trying to import data from the Northwind (accdb) database and I have both the English and Greek versions. The problems I have are the following: 1) When I am trying to import data from ...