4.20.3 Can you answer these questions?

4.20.3.1 Exporting graphics with VertexColors problem

https://mathematica.stackexchange.com/questions/146306/exporting-graphics-with-vertexcolors-problem

 
I've generated a graphics which exhibit gradient color in rectangle and export it as: 
 
SetDirectory[NotebookDirectory[]]; 
Export["./test.pdf", Graphics[{Polygon[{{-4, 5/3}, {-4, 0}, {4, 0}, {4,  ...
 

- asked by RoderickLee 3votes

4.20.3.2 How to imitate the opacity plot in EditColorFunction

https://mathematica.stackexchange.com/questions/146623/how-to-imitate-the-opacity-plot-in-editcolorfunction

 
I wish to imitate the opacity plot as shown below: 
 
%%%%%%%%%%%%%%%%%%%%% 
\cprotect\subsubsection{\verb|Edit2:|} 
\url{ref:https://www.wolfram.com/mathematica/new-in-9/3d-volumetric-image-processing/edit-color-function-palette-for-image3d.html} 
 
\begin{TEXTWinline} 
 
 
 
Here is  ...
 

- asked by Majis 3votes

4.20.3.3 Possible bug in Export with CharacterEncoding -> "PrintableASCII"

https://mathematica.stackexchange.com/questions/146294/possible-bug-in-export-with-characterencoding-printableascii

 
In the Documentation we read (emphasis is mine): 
 
 
By default, the Wolfram System uses the character encoding "PrintableASCII" when saving notebooks and packages. This means that when special  ...
 

- asked by Alexey Popkov 4votes

—