Skip to main content

dynamic - Assign values to parameters from a list/Matrix using GUI


Assume there is a list like:



ma={{L1,r1},{L2,r2}};

I want to convert the ma to a GUI which asks me about the values of L1,r1,L2 and r2 and then allows me to assign values to L1,r1,L2 and r2 as follows:


L1=2    r1=0.5
L2=4    r2=0.1

Then new matrix ma will be:


ma={{2,0.5},{4,0.1}}

I have no idea how to do that in Mathematica software! Could you please help me with it ?!




** EDITED **



This is my code for the problem:


AskUser =
DialogInput[{L1 = "", r1 = "", L2 = "", r2 = ""}, 
Column[{"L1", InputField[Dynamic[L1], Number], "r1", 
 InputField[Dynamic[r1], Number], "L2", 
 InputField[Dynamic[L2], Number], "r2", 
 InputField[Dynamic[r2], Number], 

 Button["Proceed", DialogReturn[{{L1, r1}, {L2, r2}}], 
  ImageSize -> Automatic]}]];

Suggested code works properly. However, the ma matrix is not a fixed array matrix. For example it can be like:


`ma={{L1,r1},{L2,r2},{L3,r3}};`

In other words, the ma matrix is a variable matrix whose general form is like :


`ma={{L1,r1},{L2,r2},{L3,r3},...,{Ln,rn}};`

(Thanks SquareOne for the help) **EDITED**



Now my question is how I can program a UI which can adapt itself with the ma changes in arrays and can accept both Numbers and Symbols for the input fields and having label names beside the input fields?



Answer



Implementation 1


This should produce the desired GUI.


askUser[matrix_] := DialogInput[
  Column[{
    Grid[{ToString@#1, InputField[Dynamic[#1], FieldSize -> Tiny], 
        ToString@#2, InputField[Dynamic[#2], FieldSize -> Tiny]} & @@@
       matrix, Alignment -> Left], 
    Row[{CancelButton[], DefaultButton[DialogReturn[matrix]]}]

    }]]

ma = {{L1, r1}, {L2, r2}};
askUser[ma]

enter image description here


ma


{{1, r1}, {L2, 2}}




ma = {{L11, r11}, {L22, r22}, {L33, r33}};
askUser[ma]

enter image description here



{{1, r11}, {L22, 0}, {1, r33}}



It is important to note, that with this implementation the values put into the GUI are assigned to the corresponding parameters of the matrix.




Implementation 2


The GUI of this implementation looks the same as the first one, however no values will be Set to the symbols used in the input matrix.


askUser2[matrix_] := 
 DialogInput[
  DynamicModule[{localMatrix = ConstantArray[0, Dimensions@matrix]},
   Column[{
     Grid[
      Array[Sequence @@ {ToString@matrix[[#, #2]], 
          InputField[Dynamic@localMatrix[[#, #2]], 
           FieldSize -> Tiny]} &, Dimensions@matrix], 

      Alignment -> Left], 
     Row[{CancelButton[], DefaultButton[DialogReturn[localMatrix]]}]
     }]]]

Additionally the possible shapes of the input matrix is less restricted.


Comments

Post a Comment

Popular posts from this blog

front end - keyboard shortcut to invoke Insert new matrix

I frequently need to type in some matrices, and the menu command Insert > Table/Matrix > New... allows matrices with lines drawn between columns and rows, which is very helpful. I would like to make a keyboard shortcut for it, but cannot find the relevant frontend token command (4209405) for it. Since the FullForm[] and InputForm[] of matrices with lines drawn between rows and columns is the same as those without lines, it's hard to do this via 3rd party system-wide text expanders (e.g. autohotkey or atext on mac). How does one assign a keyboard shortcut for the menu item Insert > Table/Matrix > New... , preferably using only mathematica? Thanks! Answer In the MenuSetup.tr (for linux located in the $InstallationDirectory/SystemFiles/FrontEnd/TextResources/X/ directory), I changed the line MenuItem["&New...", "CreateGridBoxDialog"] to read MenuItem["&New...", "CreateGridBoxDialog", MenuKey["m", Modifiers-...
Post a Comment
Read more

How to thread a list

I have data in format data = {{a1, a2}, {b1, b2}, {c1, c2}, {d1, d2}} Tableform: I want to thread it to : tdata = {{{a1, b1}, {a2, b2}}, {{a1, c1}, {a2, c2}}, {{a1, d1}, {a2, d2}}} Tableform: And I would like to do better then pseudofunction[n_] := Transpose[{data2[[1]], data2[[n]]}]; SetAttributes[pseudofunction, Listable]; Range[2, 4] // pseudofunction Here is my benchmark data, where data3 is normal sample of real data. data3 = Drop[ExcelWorkBook[[Column1 ;; Column4]], None, 1]; data2 = {a #, b #, c #, d #} & /@ Range[1, 10^5]; data = RandomReal[{0, 1}, {10^6, 4}]; Here is my benchmark code kptnw[list_] := Transpose[{Table[First@#, {Length@# - 1}], Rest@#}, {3, 1, 2}] &@list kptnw2[list_] := Transpose[{ConstantArray[First@#, Length@# - 1], Rest@#}, {3, 1, 2}] &@list OleksandrR[list_] := Flatten[Outer[List, List@First[list], Rest[list], 1], {{2}, {1, 4}}] paradox2[list_] := Partition[Riffle[list[[1]], #], 2] & /@ Drop[list, 1] RM[list_] := FoldList[Transpose[{First@li...
Post a Comment
Read more

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