I would like to create a map which will show lakes and rivers together with elevation contours and contour labels. What is the simplest way to do this with GeoGraphics in version 10? The solution I have (below) looks much too convoluted. I need to plot this point on the map: pos = WeatherDa...

Note: The bug described in the post is in Mathematica 9, and has been fixed in 10.0. The documentation for String contains the following statements: Strings can contain any sequence of ordinary and special characters: … Strings preserve internal formatting: … Strings can have any exp...

Update: As Simon Woods astutely observed this problem only occurs when you select the cell contents rather than the entire cell via the bracket. Those two tested this and reported, please check again selecting only the contents and see if the behavior appears. In version 10 quote marks (i.e. ...

There is something that has been troubling me for a while. At least in version 7, the performance of a / b and a - b is not equivalent to, and significantly inferior to, Divide[a, b] and Subtract[a, b], despite the fact that these are treated as equivalent in the documentation. As a terse code ...

I am trying to implement efficiently a transfer-matrix like algorithm. On each iteration, I have two vectors $x=\{x_1,\dots,x_n\}$, $y=\{y_1,\dots,y_n\}$ with real numbers and I need to compute the vector $\{\min(x_1,y_1),\dots,\min(x_n,y_n)\}$. I tried four approaches for computing it: Uncompi...