10 questions linked to/from Vary the thickness of a plotted function
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### How to vary thickness of line on the plot? [duplicate]

How to plot the function f(x) so that one part be a thicker line than another depending on the value x? (Curve is efficient frontier - portfolio optimization)
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### How to Make a Sankey Diagram

I have two lists start = {{1},{1},{1},{2},{3},{1}} end = {{1},{2},{2},{3},{3},{1}} And I want to create a Sankey diagram. Which looks something like So, ...
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### Approximating an ornamental curve

How do I go about approximating this ornamental curve? Note variable thickness typical in calligraphy. Handbook and Atlas of Curves by E.V. Shikin (1995) contains many directions, including curve ...
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### How to plot a curve with border around the line?

This can be useful if the curve is passing over both dark and light backgrounds (like well-done subtitles in movies).
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### Removing unwanted appearance of underlying mesh

Let us first define two positive definite matrices: M1 = {{2, -6}, {4, 8}}; M2 = {{2, 3}, {4, 8}}; then set two points ...
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### Make an offset curve (parallel curve)

I have a polynomial curve that I got through interpolation. ...
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### Is it possible to vary the thickness of curves according to their color code

I have this data data = Table[{x, Sin[5 x], Tanh[3 x]}, {x, -1, 1, 0.01}]; which I plot as follows ...
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### Filling using colors rendered corresponding to the difference between two curves

Suppose there are two curves f1[x] and f2[x], and we want to fill the area between them using colors corresponding to the vaule ...