# User Portlet

Hans Milton
Discussions
Hi, A syntax thing. Dataset takes a single argument. Your Dataset has two arguments (each an Association consisting of a list of Associations), followed by options. So wrap the two "main" Associations in a list to make a single...
Avoid the subscripts. The line below does not give the error: d = {{0, 0, 0, 0, d15, 0}, {0, 0, 0, d15, 0, 0}, {d13, d13, d33, 0, 0, 0}}
You can use [GeoElevationData][1] cityCoords // GeoPosition // GeoElevationData // QuantityMagnitude [1]: https://reference.wolfram.com/language/ref/GeoElevationData.html?q=GeoElevationData
![enter image description here][1] **EDIT :** $R=-2 \sqrt{13}$ $\beta =-\tan ^{-1}\left(\frac{2}{3}\right)$ A negative ***R*** (radius) looks strange, but the expression is equal to: 2 \sqrt{13} \sin \left(\tan...
Something for Wolfram to comment on
Thanks. I very seldom use W|A. The wording of my query was probably influenced by the fact that I am familiar with Mathematica. The rewriting ("transposition steps") can easily be made by hand once exp and log is understood. Nothing special,...
Combinations of 0 and 90 degrees will position the cylinder along the cube diagonals: s = 1; holeRadius = 0.18; c = Cylinder[{{-s, s, s}, {s, -s, -s}}, holeRadius]; Manipulate[ Graphics3D[{ Rotate[ ...
An example of applying rotation: cuboctas = Table[ Rotate[PolyhedronData["Cuboctahedron", "Polyhedron"], i Degree, {0, 0, 1}], {i, 0, 90, 15} ]; Manipulate[ Graphics3D[cuboctas[[angle]], Axes -> True,...
Alex, To get the weather stations closest to the poles the syntax is quite simple. Using {latitude, longitude} specifications for the pole: ###North pole In[1]:= northPoleStations = WeatherData[{{90, 0}, 2}] Out[1]=...
> The effect is not that bad in this case, it is just a gray thin line, > but I want to find a way to fix it, so the grid line extends from > exactly 0 to exactly 10. You can set PlotRangePadding to None in the X direction: ...