I have the following plot, and I need to draw a waterfall plot of this. Does anyone know how I can make a waterfall plot in Mathematica?
Plot3D[Sin[x + y], {x, 0, 2 π}, {y, 0, 2 π}] I need something like the following picture: 
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1 Answer
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The issue is with the Filling option that needs to be there in 3D. I would do it as follows: separate $x_1$ and $x_2$ coordinates, plot in 2d, add an extra dimension and then put everything together with a FaceGrids option:
Graphics3D[ Table[(First@ Plot[Sin[x + y], {x, 0, 2 π}, Filling -> Bottom, FillingStyle -> Directive[White, Opacity[1], Lighting -> {"Ambient", White}], ColorFunction -> "Rainbow"] /. {a_?AtomQ, b_?AtomQ} :> {a, y, b}), {y, Subdivide[0, 2 Pi, 10]}], Boxed -> False, FaceGrids -> {{1, 0, 0}, {0, 1, 0}, {0, 0, -1}}, FaceGridsStyle -> Directive[Black]] 
Show@Table[ ParametricPlot3D[{x, y, Sin[x + y]}, {y, 0, 2 \[Pi]}], {x, Subdivide[0, 2 Pi, 10]}]as a first attempt. $\endgroup$ParametricPlot3D:ParametricPlot3D[ Evaluate[ Tooltip[{#, y, Sin[# + y]}, StringForm["x = ``", #]] & /@ Subdivide[0, 2 Pi, 10]], {y, 0, 2 \[Pi]}, ColorFunction -> "BlueGreenYellow"]$\endgroup$