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I am using the following code where color and color barlegend show the radius of the concentric circles:

ClearAll[b]
b[x_] := x

Legended[
 Graphics[
   Table[{Hue[i/20], Circle[{0, 0}, b[i]]}, {i, 1, 6, 0.1}],
   ImageSize -> 350, Frame -> True
 ],
 BarLegend[{Hue[#/20] &, {1, 6}}]
]

Can the code be adapted to show the area of the circles instead?

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1 Answer 1

2
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ClearAll[b]
b[x_] = x;
Legended[Graphics[
  Table[{Hue[π*i^2/(π*6^2)], Circle[{0, 0}, b[i]]}, {i, 1, 6, 
    0.1}], ImageSize -> 350, Frame -> True], 
 BarLegend[{Hue[#/(π*6^2)] &, π {1, 6}^2}]]

enter image description here

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1
  • $\begingroup$ I am using it like this . Now how to set barlegend numbers according to the c[x] value? c[x_] := (1 - 0.01/x^2)/( 4 [Pi] Sqrt[(1 - 0.0005/x) (1 - x/20)] x); b[x_] = x; Legended[Graphics[ Table[{Hue[c[i]/(9*c[6])], Circle[{0, 0}, b[i]]}, {i, 1, 6, 0.1}], ImageSize -> 350, Frame -> True], BarLegend[{Hue[c[#]/(9*c[6])] &, {1, 6}}]] $\endgroup$
    – AKU
    2 days ago

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