6.22 Tuesday, August 4, 2015

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Top new questions this week: 
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[Upgrade to Windows 10] http://mathematica.stackexchange.com/questions/89407/upgrade-to-windows-10

Can users of Mathematica on Windows 7 or Windows 8/8.1 upgrade their computers to Windows 10 a process that began today? Does Mathematica work? Are all the settings, licenses, access to files and ...

- asked by Lubos Motl (23 votes), answered by RunnyKine (21 votes)

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[Solve slower in versions 9 and 10] http://mathematica.stackexchange.com/questions/89650/solve-slower-in-versions-9-and-10

With some systems of equations, Solve is much slower in versions 9 and 10 than in earlier versions, apparently because it is doing more simplification of the results.

With the following example ...

- asked by Simon Rochester (21 votes), answered by Michael E2 (11 votes)

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[Speeding up the built-in Rudin-Shapiro and Thue-Morse sequence functions] http://mathematica.stackexchange.com/questions/89345/speeding-up-the-built-in-rudin-shapiro-and-thue-morse-sequence-functions

Version 10.2 introduced two well-studied sequences as functions: the (Golay-)Rudin-Shapiro sequence (RudinShapiro[]) and the (Prouhet-)Thue-Morse sequence (ThueMorse[]). Since these functions are ...

- asked by Guess who it is. (19 votes), answered by Oleksandr R. (22 votes)

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[Change in Lighting and Show in V10?] http://mathematica.stackexchange.com/questions/89491/change-in-lighting-and-show-in-v10

According the documentation for Show:

Options explicitly specified in Show override those included in the graphics expression. The lists of non-default options in the Subscript[g, i] are ...

- asked by Michael E2 (13 votes), answered by Mr.Wizard (7 votes)

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[Global‘ context not empty at startup in v10.2.0] http://mathematica.stackexchange.com/questions/89686/global-context-not-empty-at-startup-in-v10-2-0

Bug introduced in 10.2 and persisting through 10.2 or later

Note that the analysis of this problem revealed a different problem than in Potential pollution of Global‘ context in fresh kernel (see ...

- asked by Chen Stats Yu (12 votes), answered by Michael E2 (8 votes)

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[How to monitor the progress of training a classifier?] http://mathematica.stackexchange.com/questions/89444/how-to-monitor-the-progress-of-training-a-classifier

I've had p = Predict[x -> y] running for hours and I have now idea if 
I should kill it or not. 
 
I'm looking for some rough bounds for an estimate of how long Predict[] or 
Classify[] will take to  ...

- asked by M.R. (12 votes), answered by Sebastian (12 votes)

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[All value types for a symbol?] http://mathematica.stackexchange.com/questions/89607/all-value-types-for-a-symbol

Robby Villegas here shows a nice way to see all the types associated with a symbol. He sets a symbol, valueTypes, to an explicit list of the values types in version 3.0 of Mathematica (I took off his ...

- asked by Reb.Cabin (11 votes), answered by Reb.Cabin (6 votes)

================================== Greatest hits from previous weeks: ==================================

[How to perform a multi-peak fitting?] http://mathematica.stackexchange.com/questions/26336/how-to-perform-a-multi-peak-fitting

I am wondering how to implement the multi-peak detecting and fitting in Mathematica. Following is an example of fitting the data using three peaks (such that the data   peak1 + peak2 + peak3).

The ...

- asked by Everett You (27 votes), answered by Silvia (29 votes)

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[Get a "step-by-step" evaluation in Mathematica] http://mathematica.stackexchange.com/questions/148/get-a-step-by-step-evaluation-in-mathematica

Is it possible in Mathematica to get a step-by-step evaluation of some functions; that’s to say, outputting not only the result but all the stages that have led to it? If so, how does one do it?

...

- asked by Skydreamer (75 votes), answered by Guess who it is. (61 votes)

================================== Can you answer these? ==================================

[Fast Partition of list at depth 2] http://mathematica.stackexchange.com/questions/89809/fast-partition-of-list-at-depth-2

I am looking to partition a list up at a certain depth level. Following code should demonstrate what I mean:

test = Table[Random[], {1000}, {32}, {32}]; 
 
result = Map[Partition[#, {5, 5}, 1] &,  ...

- asked by Julian Francis (6 votes)

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[ListLogPlot error when forcing y axes start at 0] http://mathematica.stackexchange.com/questions/89524/listlogplot-error-when-forcing-y-axes-start-at-0

I came across an error I can not circumvent.

When plotting the following:

ListLogPlot[Table[1/x, {x, 1, 100}]]

I receive a functioning plot. If I now want to add a specific PlotRange, i.e.

...

- asked by mondo (4 votes)

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[DSolve returns an answer that is not a solution] http://mathematica.stackexchange.com/questions/89550/dsolve-returns-an-answer-that-is-not-a-solution

Investigating DSolve misses a solution of a differential equation, I came across this odd behavior of DSolve.

The following DSolve command returns an answer to the ODE but the solutions do not ...

- asked by Michael E2 (5 votes)