3.22.1 Top new questions this week

3.22.1.1 PacletInfo.m documentation project

http://mathematica.stackexchange.com/questions/132064/pacletinfo-m-documentation-project

 
Packages can be made into paclets, which provides easy distribution and versioning.  The paclet metadata is in the PacletInfo.m file. The PacletInfo settings also determine how the paclet can extend  ...
 

- asked by Szabolcs (25 votes), answered by Szabolcs (22 votes)

3.22.1.2 Replace custom functions, leave built in functions untouched?

http://mathematica.stackexchange.com/questions/131938/replace-custom-functions-leave-built-in-functions-untouched

 
I have three expressions a[x, y], b[x, y], c[x, y] that act as placeholders for functions of two variables x,y. Consider the following substitution: 
 
a[x, y]/(b[x, y] c[x, y]) /. f_[x1_, y1_] :>  ...
 

- asked by Kagaratsch (16 votes), answered by Mr.Wizard (18 votes)

3.22.1.3 Why CompilationTarget -> C is slower than directly writing with C?

http://mathematica.stackexchange.com/questions/132130/why-compilationtarget-c-is-slower-than-directly-writing-with-c

 
Probably a hard question, but I think it's better to cry out loud. 
 
I've hesitated for a while about whether I should post this in StackOverflow with a c tag or not, but finally decide to keep it  ...
 

- asked by xzczd (15 votes), answered by Albert Retey (11 votes)

3.22.1.4 Detecting kernel initialization

http://mathematica.stackexchange.com/questions/132212/detecting-kernel-initialization

 
Certain operations do not work during kernel initialization.  Code from Kernel/init.m, the Autoload directory, or packages set to autoload may evaluate at initialization time. 
 
Is there a way to  ...
 

- asked by Szabolcs (12 votes), answered by Szabolcs (10 votes)

3.22.1.5 How can I change the default file type for "Save Selection As"

http://mathematica.stackexchange.com/questions/132224/how-can-i-change-the-default-file-type-for-save-selection-as

 
When using the menu item File - Save Selection As, the default file type is PDF. Is there any way to change the default to something else, for example PNG?
 

- asked by Simon Woods (12 votes), answered by Mike Honeychurch (13 votes)

3.22.1.6 How to obtain the ViewPoint

http://mathematica.stackexchange.com/questions/132228/how-to-obtain-the-viewpoint

 
Normally, I used ViewPoint in the code in Plot3D. Most of the time, I will use mouse to rotate the 3D object to get a better view point. The problem is, when I find the best view point for me, is  ...
 

- asked by Qi Zhong (12 votes), answered by Jack LaVigne (14 votes)

3.22.1.7 Wonky Solutions to Schrödinger Equation with Box Barrier

http://mathematica.stackexchange.com/questions/131854/wonky-solutions-to-schr%c3%b6dinger-equation-with-box-barrier

 
I'm trying to solve the Schrödinger equation using NDSolve in a case where there is a potential box barrier. The initial condition is a cosine wave, and for boundary conditions I require that the  ...
 

- asked by Buddhapus (8 votes), answered by xzczd (4 votes)