================================== Top new questions this week: ==================================
[How to improve this plot?] http://mathematica.stackexchange.com/questions/129426/how-to-improve-this-plot
In general, the quality of Mathematica graphics is beyond praise. However, the output of Plot3D command is somewhat unexpected in the following code. Let’s solve the Dirichlet problem for the ...
- asked by user64494 (11 votes), answered by Simon Woods (16 votes)
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[Neural Networks: Does Mathematica (v11) experimental code support state-of-art Models?] http://mathematica.stackexchange.com/questions/129469/neural-networks-does-mathematica-v11-experimental-code-support-state-of-art-m
Mathematica made a big step implementing Neural Networks. I checked some examples for deep learning (ChainNet), also the related link. I see that model structures such as LaNet can be developed. ...
- asked by s.s.o (10 votes), answered by Alexey Golyshev (8 votes)
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[Converting Game of Life images to lists] http://mathematica.stackexchange.com/questions/129135/converting-game-of-life-images-to-lists
I want to convert images of GoL configurations into binary matrices to run in Mathematica’s CellularAutomaton. I know that there’s a collection of GoL patterns in http://conwaylife.com and other ...
- asked by andandandand (10 votes), answered by C. E. (5 votes)
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[JDBC-to-ODBC bridge gone. How to connect to SQL Server now in case of Windows Authentication?] http://mathematica.stackexchange.com/questions/129160/jdbc-to-odbc-bridge-gone-how-to-connect-to-sql-server-now-in-case-of-windows-au
Connecting to our corporate SQL servers using JDBC never worked for me, perhaps related to the Windows Authentication method that is necessary in our network. However, I found out that configuring the ...
- asked by Sjoerd C. de Vries (8 votes), answered by Sjoerd C. de Vries (6 votes)
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[How to speed up calculations on big symbolic matrices?] http://mathematica.stackexchange.com/questions/129465/how-to-speed-up-calculations-on-big-symbolic-matrices
this is my first time posting something on a community of the StackExchange platform, so please feel free to correct me if I’m doing something wrong. :) Additionally you should probably know that I’m ...
- asked by TSwift (8 votes)
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[How do I ’Join’ two Structured Datasets?] http://mathematica.stackexchange.com/questions/129116/how-do-i-join-two-structured-datasets
Consider the following Datasets
dsCompetitions with fields "id","name","eventTypeId"
dsEventTypes with fields "id", "name"
I want to join the datasets as follows using SQL pseudocode:
SELECT ...
- asked by nilo de roock (8 votes), answered by rcollyer (7 votes)
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[Why isn’t Orderless an Attribute of And?] http://mathematica.stackexchange.com/questions/129415/why-isnt-orderless-an-attribute-of-and
In standard logic And is a commutative operator. Still, in Mathematica, And doesn’t have the Orderless attribute:
Attributes[And] (* {Flat,HoldAll,OneIdentity,Protected} *)
This may have not been ...
- asked by Soldalma (7 votes), answered by JHM (6 votes)
================================== Greatest hits from previous weeks: ==================================
[Programming the fiver game] http://mathematica.stackexchange.com/questions/120959/programming-the-fiver-game
Obviously, even if I ask a lot of question I am, obviously, still a dummy!!!!
I want to program the fiver game. It’s a very simple game played solitary on a \(5 \times 5\) the rule is elementary : if ...
- asked by cyrille.piatecki (12 votes), answered by Mr.Wizard (19 votes)
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[How to make an inkblot?] http://mathematica.stackexchange.com/questions/3345/how-to-make-an-inkblot
How to effectively create a polygon that looks like a realistic inkblot? So far, I could come up with this (borrowing from Ed Pegg Jr.’s Rorschach demonstration):
RandomBlot[num_, opts___] := ...
- asked by István Zachar (83 votes), answered by Sjoerd C. de Vries (46 votes)
================================== Can you answer these? ==================================
[Counting the occurences of entries in a dataset columnwise] http://mathematica.stackexchange.com/questions/129459/counting-the-occurences-of-entries-in-a-dataset-columnwise
Consider a dataset with some rows and considerably less columns (eg something like 10x3). Assume that the contents of the dataset cells are integers from some conveniently chosen range (eg 1 through ...
- asked by user42582 (1 vote)
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[List, Association, and Dataset, according to what principles to choose which one to use?] http://mathematica.stackexchange.com/questions/129081/list-association-and-dataset-according-to-what-principles-to-choose-which-one
List, Association and Dataset are three ’objects’ that can be used to store data in MMA. So when or under what conditions for one to decide to use each of them?
- asked by Alexander Zeng (2 votes)
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[How to ArrayFlatten some matrix which have repeated element] http://mathematica.stackexchange.com/questions/129153/how-to-arrayflatten-some-matrix-which-have-repeated-element
I have many such matrices(whose dimension are all 3*3.) like:
list1={{0,3,0},{4,1,2},{0,5,0}}; list2={{0,6,0},{1,2,8},{0,7,0}}; list3={{0,1,0},{9,5,7},{0,11,0}}; list4={{0,2,0},{5,7,10},{0,12,0}};
...
- asked by yode (3 votes)