bugs - Problem with Classify Documentation Center page

Bug introduced in 10.0 and fixed in 10.2

Every time I try to open the "Neat Examples" tab on the documentation center page for the function Classify Mma gets stuck showing "Progress Dialog". The problem persists after disabling dynamic evaluation.

Can someone confirm this problem?

OS: Linux
Mma ver: 10.0.1

Answer

I confirm (Windows 7 x64, MMa 10.0.1). After opening the "Neat Examples" tab in the Documentation Center page for Classify MathKernel.exe loads HUGE amount of data from pacletserver2.wolfram.com. After 2 hours of waiting with hanging Mathematica FrontEnd I found in the

%userprofile%\AppData\Roaming\Mathematica\Paclets\Temporary

directory more than 600 files with names ranging from "Classifier_Language-1.0.09441.paclet" to "Classifier_Language-1.0.09441000.paclet" most of which have file size about 4.42 Mb. The overall size of the directory is now 2.48 Gb and keeps growing. The FrontEnd still does not respond.

UPDATE

I have found that all the files grow only up to the size of 4643101 bytes and are exactly identical on this final stage (I have checked this with Windows' fc /B command-line tool)! Up to the moment I have already about 800 files and it looks like the process will not stop until all the 1000 identical files (names range from "Classifier_Language-1.0.09441.paclet" to "Classifier_Language-1.0.09441000.paclet") will be loaded from pacletserver2.wolfram.com. It is clearly a bug.

UPDATE 2

After several hours of the above-described "work" Mathematica has crashed. The files in the folder are still here and were not deleted after restarting Mathematica. Their overall size is 3.44 Gb.

Comments

plotting - Filling between two spheres in SphericalPlot3D

Manipulate[ SphericalPlot3D[{1, 2 - n}, {θ, 0, Pi}, {ϕ, 0, 1.5 Pi}, Mesh -> None, PlotPoints -> 15, PlotRange -> {-2.2, 2.2}], {n, 0, 1}] I cant' seem to be able to make a filling between two spheres. I've already tried the obvious Filling -> {1 -> {2}} but Mathematica doesn't seem to like that option. Is there any easy way around this or ... Answer There is no built-in filling in SphericalPlot3D . One option is to use ParametricPlot3D to draw the surfaces between the two shells: Manipulate[ Show[SphericalPlot3D[{1, 2 - n}, {θ, 0, Pi}, {ϕ, 0, 1.5 Pi}, PlotPoints -> 15, PlotRange -> {-2.2, 2.2}], ParametricPlot3D[{ r {Sin[t] Cos[1.5 Pi], Sin[t] Sin[1.5 Pi], Cos[t]}, r {Sin[t] Cos[0 Pi], Sin[t] Sin[0 Pi], Cos[t]}}, {r, 1, 2 - n}, {t, 0, Pi}, PlotStyle -> Yellow, Mesh -> {2, 15}]], {n, 0, 1}]

plotting - Plot 4D data with color as 4th dimension

I have a list of 4D data (x position, y position, amplitude, wavelength). I want to plot x, y, and amplitude on a 3D plot and have the color of the points correspond to the wavelength. I have seen many examples using functions to define color but my wavelength cannot be expressed by an analytic function. Is there a simple way to do this? Answer Here a another possible way to visualize 4D data: data = Flatten[Table[{x, y, x^2 + y^2, Sin[x - y]}, {x, -Pi, Pi,Pi/10}, {y,-Pi,Pi, Pi/10}], 1]; You can use the function Point along with VertexColors . Now the points are places using the first three elements and the color is determined by the fourth. In this case I used Hue, but you can use whatever you prefer. Graphics3D[ Point[data[[All, 1 ;; 3]], VertexColors -> Hue /@ data[[All, 4]]], Axes -> True, BoxRatios -> {1, 1, 1/GoldenRatio}]

plotting - Adding a thick curve to a regionplot

Suppose we have the following simple RegionPlot: f[x_] := 1 - x^2 g[x_] := 1 - 0.5 x^2 RegionPlot[{y < f[x], f[x] < y < g[x], y > g[x]}, {x, 0, 2}, {y, 0, 2}] Now I'm trying to change the curve defined by $y=g[x]$ into a thick black curve, while leaving all other boundaries in the plot unchanged. I've tried adding the region $y=g[x]$ and playing with the plotstyle, which didn't work, and I've tried BoundaryStyle, which changed all the boundaries in the plot. Now I'm kinda out of ideas... Any help would be appreciated! Answer With f[x_] := 1 - x^2 g[x_] := 1 - 0.5 x^2 You can use Epilog to add the thick line: RegionPlot[{y < f[x], f[x] < y < g[x], y > g[x]}, {x, 0, 2}, {y, 0, 2}, PlotPoints -> 50, Epilog -> (Plot[g[x], {x, 0, 2}, PlotStyle -> {Black, Thick}][[1]]), PlotStyle -> {Directive[Yellow, Opacity[0.4]], Directive[Pink, Opacity[0.4]],

Blog

Search This Blog