manipulate - Variable name with subscripts in Manipulator[], is it possible?

I'm trying to create a variable in Manipulate[] with a subscript in its name with the following code:

{{Subscript[r, b], 175.0, "Base radius"}, 127.0, 254.0, 1.0, Appearance -> "Labeled", ImageSize -> Tiny},

But, I've got an error message saying that the variable specification is incorrect.

Given that I can name variables like that outside Manipulator variables' specification, is it possible to overcome this behavior and define a Manipulator variable with such a name?

Best Regards,

Comments

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}]

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