在Mathematica中获得矩阵输入

我希望用户输入矩阵。我有下面的代码。在Mathematica中获得矩阵输入

rmatrix = {{Input["r11"], Input["r12"]}, {Input["r21"], Input["r22"]}}

但它显示了每个项目的单独对话框。我想在一个对话框中获得完整的矩阵。

我也试过用另一种方法。检查下面的代码。

form = FormFunction[{{"r11" -> "Number", 
    "r12" -> "Number"}, {"r21" -> "Number", "r22" -> "Number"}}, 
    MatrixForm];

但我不知道如何将这些值分配给矩阵。

来源

2017-01-20 sheldon cooper

rmatrix = DialogInput[{r11, r12, r21, r22}, Grid[{ 
    {"r11", InputField[Dynamic[r11], Number], "r12", 
     InputField[Dynamic[r12], Number]}, 
    {"r21", InputField[Dynamic[r21], Number], "r22", 
     InputField[Dynamic[r22], Number]}, 
    { 
     Button["done", DialogReturn[{{r11, r12}, {r21, r22}}], 
     ImageSize -> Automatic]}}]];

如果你不喜欢这一点，不会让你退出，而无需输入所有的值：

rmatrix = DialogInput[{r11, r12, r21, r22}, Grid[{ 
    {"r11", InputField[Dynamic[r11], Number], "r12", 
     InputField[Dynamic[r12], Number]}, 
    {"r21", InputField[Dynamic[r21], Number], "r22", 
     InputField[Dynamic[r22], Number]}, 
    { Button["done", DialogReturn[{{r11, r12}, {r21, r22}}], 
     ImageSize -> Automatic, 
     Enabled -> Dynamic[AllTrue[{r11, r12, r21, r22}, NumericQ]]]}}]];

来源

2017-01-20 18:56:29 agentp

感谢，正是我试图实现。 –

Interpretation[{ 
    r11 = MakeBoxes[0], 
    r12 = MakeBoxes[0], 
    r21 = MakeBoxes[0], 
    r22 = MakeBoxes[0]}, Panel[Grid[{ 
    {InputField[Dynamic[r11], Boxes, FieldSize -> Tiny], 
    InputField[Dynamic[r12], Boxes, FieldSize -> Tiny]}, 
    {InputField[Dynamic[r21], Boxes, FieldSize -> Tiny], 
    InputField[Dynamic[r22], Boxes, FieldSize -> Tiny]} 
    }]], 
With[{r11 = ToExpression[r11], r12 = ToExpression[r12], 
    r21 = ToExpression[r21], 
    r22 = ToExpression[r22]}, {{r11, r12}, {r21, r22}}]]

来源

2017-01-20 19:03:36 Daniel

在Mathematica中获得矩阵输入

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