1.20.1 Top new questions this week

1.20.1.1 Faster "Closest Pair of Points Problem" implementation?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237884

The closest pair of points problem is a common computational geometry problem: given n points, find a pair of points with the smallest distance between them. A naive algorithm of finding distances ...

asked by Aaron T. Becker https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76690 17 votes

answered by Carl Woll https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45431 11 votes

1.20.1.2 Broken ValueQ function in Mma12.2?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237871

f[x] ^= 1; 
ValueQ[g[x]]

returns True in Mathematica 12.2. Is it a bug?

asked by Roma Lee https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=57495 15 votes

answered by MarcoB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27951 17 votes

1.20.1.3 Graphics not correctly produced when saving to PDF in Version 12

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237994

12.0.0 for Microsoft Windows (64-bit) (April 6, 2019) How do I get my graphic to look the same in PDF as it does in a Notebook? This is what the graphic looks like in the FrontEnd:

This is how the ...

asked by Steven Thomas Hatton https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=44139 10 votes

answered by MelaGo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=63360 13 votes

1.20.1.4 MoleculePlot draws sucrose benzoate with overlapping bonds

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237903

Recently I learned that in Mathematica it is possible to create chemical structures here: Chemical formulas with Mathematica I am having a problem with a structure called "Sucrose benzoate"

asked by John https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72940 9 votes

answered by Jason B. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9490 9 votes

1.20.1.5 How to globally disable and re-enable Echo?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238163

I have Echo’s buried in code all over my notebook, I’d like a flag to turn them all on or off globally.

Sure Unprotect[Echo];Echo=Identity would disable them, but ...

asked by M.R. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=403 6 votes

answered by Carl Woll https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=45431 9 votes

1.20.1.6 Compile - Optimization of function calls - does it matter?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=238018

I was surprised to see that, in the results of CompilePrint for a function made with Compile, calls to ...

asked by Sean https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76328 6 votes

answered by Sean https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=76328 2 votes

1.20.1.7 neighbouring pixels : next smaller and bigger perimeter

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237914

I have a list of pixels centers, for example :

asked by yfs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=71775 6 votes

answered by C. E. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=731 7 votes