11.12.1 Top new questions this week

11.12.1.1 Create a fantasy map
11.12.1.2 Efficient way to aggregate values within time intervals in a large Tabular
11.12.1.3 Path of polynomial roots as function of a parameter
11.12.1.4 DensityPlot3D custom function opacity
11.12.1.5 How can I use this to determine whether the equation?
11.12.1.6 Highlighting a region on a unit ball
11.12.1.7 Finding all integers solutions to set of equations
11.12.1.1 Create a fantasy map

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=311870

I am trying to create an imaginary coastline as per here: 
 
I am replicating the rice pattern with this (code adapted from here): 
... 
[graphics] [generative-art]
 
asked by martin https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9923 Score of 13
answered by cvgmt https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72111 Score of 11
11.12.1.2 Efficient way to aggregate values within time intervals in a large Tabular

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=311957

What is an efficient way to aggregate daily, weekly, monthly, etc. values within a very large  Tabular ? 
Example: 
... 
[performance-tuning] [date-and-time] [tabular]
 
asked by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12 Score of 7
answered by Domen https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75628 Score of 7
11.12.1.3 Path of polynomial roots as function of a parameter

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=311934

I have a polynomial in x with a parameter c0. I would like to plot the path of the roots as a function of the polynomial. This has come from determinant of a matrix but I can't see how I could use <... 
[plotting] [equation-solving]
 
asked by Hugh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12558 Score of 7
answered by yarchik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9469 Score of 7
11.12.1.4 DensityPlot3D custom function opacity

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=311885

Is it possible to have an opacity function that depends on x,y and z, instead of only f: 
... 
[plotting] [opacity]
 
asked by Vsevolod A. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=51665 Score of 6
answered by Greg Hurst https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4346 Score of 7
11.12.1.5 How can I use this to determine whether the equation?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=311875

I am trying to write step by step to solve the equation has the form 
$$\sqrt{ax^2 + bx + c} = dx + t.$$ I know that, the solutions (if they exist) of the equation 
$$ax^2 + bx + c = (dx + t)^2$$ which ... 
[conditional] [latex]
 
asked by John Paul Peter https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81746 Score of 5
answered by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 Score of 5
11.12.1.6 Highlighting a region on a unit ball

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=311971

Give the definition of parameter x as  x[theta_] := (1 + Cos[theta])/2;  , how can I plot the following region on a unit ball: 
... 
[plotting] [regions] [regionplot]
 
asked by User1729173 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=88573 Score of 4
answered by azerbajdzan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53172 Score of 0
11.12.1.7 Finding all integers solutions to set of equations

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=311901

I have a set of equations whose l.h.s. are given by: 
... 
[equation-solving] [algebraic-manipulation]
 
asked by chris https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1089 Score of 4
answered by Ulrich Neumann https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=53677 Score of 7