Skip to main content

Syntax highlighting conflict


I'm trying to syntax highlight this expression: x=√π//N and from various sources I've learned that x (the assigned symbol) belongs to context Global while the Pi and N belongs to System. So I set out to change the style of both using a hodgepodge of tips I gleaned from this StackExchange as well as from StackOverflow.


However, the weird thing is that the style changes do not add to each other. If I change the style of System, any previous style change to Global would be wiped away, and vice versa. In other words, I can have syntax highlighting for either System, or Global, but not both. This could be seen from these screenshots (sorry for the small font, code added):



First line:



SetOptions[$FrontEndSession, 
 "AutoStyleOptions" -> {"SymbolContextStyles" -> {"System`" -> 
      RGBColor[211./255, 54./255, 130./255]}}] (*magenta*)

System Magenta Setting System style: magenta



Second line:


SetOptions[$FrontEndSession, 
 "AutoStyleOptions" -> {"SymbolContextStyles" -> {"Global`" -> 
      RGBColor[181./255, 137./255, 0./255]}}] (*yellow*)


Global Yellow Setting Global style: yellow; when evaluated, previously set System style was wiped out



Could anyone guide me toward getting syntax highlighting for both of them? I really hope MMA has better syntax highlighting on their future releases.



Answer



To prevent your second invocation of SetOptions from resetting the value of sub-option "SymbolContextStyles", you need to set both "System" and "Global" sub-sub-option values at once:


SetOptions[EvaluationNotebook[],   
    "AutoStyleOptions" -> {"SymbolContextStyles" -> 
                             {"System`" -> RGBColor[211./255, 54./255, 130./255], 
                               "Global`" -> RGBColor[181./255, 137./255, 0./255]}}]


Note: Replace EvaluationNotebook[] with $FrontEndSession to make the new setting effective for all notebooks in the current MMA session, and with $FrontEnd to make them apply to current and later sessions.


This setting works as expected on my Windows 8 (64bit) system with Version 9.0.1.0.


enter image description here


.


Comments

Post a Comment

Popular posts from this blog

functions - Get leading series expansion term?

Given a function f[x] , I would like to have a function leadingSeries that returns just the leading term in the series around x=0 . For example: leadingSeries[(1/x + 2)/(4 + 1/x^2 + x)] x and leadingSeries[(1/x + 2 + (1 - 1/x^3)/4)/(4 + x)] -(1/(16 x^3)) Is there such a function in Mathematica? Or maybe one can implement it efficiently? EDIT I finally went with the following implementation, based on Carl Woll 's answer: lds[ex_,x_]:=( (ex/.x->(x+O[x]^2))/.SeriesData[U_,Z_,L_List,Mi_,Ma_,De_]:>SeriesData[U,Z,{L[[1]]},Mi,Mi+1,De]//Quiet//Normal) The advantage is, that this one also properly works with functions whose leading term is a constant: lds[Exp[x],x] 1 Answer Update 1 Updated to eliminate SeriesData and to not return additional terms Perhaps you could use: leadingSeries[expr_, x_] := Normal[expr /. x->(x+O[x]^2) /. a_List :> Take[a, 1]] Then for your examples: leadingSeries[(1/x + 2)/(4 + 1/x^2 + x), x] leadingSeries[Exp[x], x] leadingSeries[(1/x + 2 + (1 - 1/x...
Post a Comment
Read more

mathematical optimization - Minimizing using indices, error: Part::pkspec1: The expression cannot be used as a part specification

I want to use Minimize where the variables to minimize are indices pointing into an array. Here a MWE that hopefully shows what my problem is. vars = u@# & /@ Range[3]; cons = Flatten@ { Table[(u[j] != #) & /@ vars[[j + 1 ;; -1]], {j, 1, 3 - 1}], 1 vec1 = {1, 2, 3}; vec2 = {1, 2, 3}; Minimize[{Total@((vec1[[#]] - vec2[[u[#]]])^2 & /@ Range[1, 3]), cons}, vars, Integers] The error I get: Part::pkspec1: The expression u[1] cannot be used as a part specification. >> Answer Ok, it seems that one can get around Mathematica trying to evaluate vec2[[u[1]]] too early by using the function Indexed[vec2,u[1]] . The working MWE would then look like the following: vars = u@# & /@ Range[3]; cons = Flatten@{ Table[(u[j] != #) & /@ vars[[j + 1 ;; -1]], {j, 1, 3 - 1}], 1 vec1 = {1, 2, 3}; vec2 = {1, 2, 3}; NMinimize[ {Total@((vec1[[#]] - Indexed[vec2, u[#]])^2 & /@ R...
Post a Comment
Read more

plotting - Plot 4D data with color as 4th dimension

I have a list of 4D data (x position, y position, amplitude, wavelength). I want to plot x, y, and amplitude on a 3D plot and have the color of the points correspond to the wavelength. I have seen many examples using functions to define color but my wavelength cannot be expressed by an analytic function. Is there a simple way to do this? Answer Here a another possible way to visualize 4D data: data = Flatten[Table[{x, y, x^2 + y^2, Sin[x - y]}, {x, -Pi, Pi,Pi/10}, {y,-Pi,Pi, Pi/10}], 1]; You can use the function Point along with VertexColors . Now the points are places using the first three elements and the color is determined by the fourth. In this case I used Hue, but you can use whatever you prefer. Graphics3D[ Point[data[[All, 1 ;; 3]], VertexColors -> Hue /@ data[[All, 4]]], Axes -> True, BoxRatios -> {1, 1, 1/GoldenRatio}]
Post a Comment
Read more