title: 3D Surface with Plot_ly in r, with x,y,z coordinates
body: <p><a href="https://i.stack.imgur.com/bMBDS.png" rel="noreferrer"><img src="https://i.stack.imgur.com/bMBDS.png" alt="enter image description here"></a>I am trying to use 3D surface plots to analyze the stability of outcomes as a function of inputs. z is my outcome, and x and y are parameter values. Using lattice's wireframe I can make a surface plot no problem, but it would be nice to have the interactive and sharable capabilities of plotly. The volcano example doesn't show how to take x,y,z coordinates and make a surface plot. Anyone know how to concisely do that? Here is the lattice wireframe example and data:</p>
  
  <pre><code>library(lattice) 
  
  z &lt;- c(0.035, 0.043, 0.036, 0.037, 0.016, 0.013, 0.025, 0.037, 0.039, 0.043,         
  0.049, 0.029, 0.025, 0.02,  0.032, 0.045, 0.049, 0.043, 0.027, 0.031, 
  0.028,0.039, 0.038, 0.037, 0.045, 0.046, 0.04,  0.041, 0.037, 0.048, 0.048, 
  0.032, 0.03,  0.032, 0.029, 0.043, 0.056, 0.057, 0.046, 0.034, 0.035, 
  0.026,0.036, 0.048, 0.038, 0.032, 0.034, 0.027, 0.024, 0.041, 0.05,  0.056, 
  0.038, 0.027, 0.034, 0.027, 0.042, 0.054, 0.054, 0.039, 0.036, 0.029, 
  0.027,0.04,  0.052, 0.058, 0.051, 0.028, 0.025, 0.035, 0.037, 0.053, 0.059, 
  0.049, 0.044, 0.035, 0.021, 0.044, 0.059, 0.054, 0.052, 0.041, 0.032, 
  0.036,0.039, 0.051, 0.056, 0.038, 0.04,  0.022, 0.015, 0.043, 0.054, 0.052, 
  0.05,  0.031, 0.03,  0.03,  0.031, 0.044, 0.051, 0.047, 0.04,  0.038, 
  0.037,0.06,  0.071, 0.07,  0.066, 0.038, 0.031, 0.045, 0.064, 0.065, 0.074, 
  0.08,  0.052, 0.048, 0.041, 0.053, 0.072, 0.079, 0.071, 0.043, 0.059, 0.05, 
  0.061, 0.061, 0.055, 0.069, 0.07,  0.057, 0.057, 0.055, 0.074, 0.071, 0.051, 
  0.048, 0.05,  0.053, 0.069, 0.086, 0.085, 0.07,  0.047, 0.05,  0.047,0.055, 
  0.073, 0.065, 0.056, 0.054, 0.048, 0.043, 0.063, 0.078, 0.087, 0.068, 0.047, 
  0.052, 0.048, 0.065, 0.085, 0.084, 0.062, 0.049, 0.05,  0.05, 0.068, 0.084, 
  0.095, 0.089, 0.052, 0.052, 0.062, 0.062, 0.086, 0.09,  0.078, 0.062, 0.058, 
  0.038, 0.068, 0.095, 0.09,  0.082, 0.069, 0.057, 0.058,0.064, 0.082, 0.087, 
  0.055, 0.053, 0.032, 0.033, 0.067, 0.087, 0.087, 0.079, 0.058, 0.053, 0.057, 
  0.047, 0.069, 0.085, 0.075, 0.068, 0.063, 0.062,0.076, 0.089, 0.095, 0.086, 
  0.056, 0.053, 0.063, 0.082, 0.08,  0.099, 0.101, 0.067, 0.065, 0.058, 0.066, 
  0.086, 0.103, 0.088, 0.051, 0.072, 0.06, 0.08,  0.078, 0.067, 0.084, 0.086, 
  0.067, 0.066, 0.068, 0.087, 0.087, 0.071, 0.063, 0.065, 0.067, 0.087, 0.104, 
  0.108, 0.086, 0.057, 0.063, 0.056,0.064, 0.087, 0.084, 0.07,  0.063, 0.061, 
  0.06,  0.076, 0.095, 0.11,  0.088, 0.057, 0.062, 0.067, 0.079, 0.097, 0.105, 
  0.079, 0.055, 0.064, 0.066,0.087, 0.104, 0.12,  0.113, 0.063, 0.07,  0.075, 
  0.073, 0.104, 0.111, 0.091, 0.072, 0.07,  0.05,  0.083, 0.114, 0.11,  0.098, 
  0.083, 0.077, 0.07, 0.078, 0.098, 0.105, 0.069, 0.062, 0.045, 0.046, 0.083, 
  0.106, 0.106, 0.093, 0.077, 0.075, 0.073, 0.057, 0.088, 0.105, 0.094, 0.084, 
  0.082, 0.081)
  
  x &lt;- c(1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  
  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10,13, 16, 19, 1,  
  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 
  19, 1,  4,  7,  10, 13, 16, 19, 1, 4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 
  13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  
  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 
  1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4, 7,  10, 13, 
  16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  
  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  
  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 
  19, 1,  4,  7, 10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 
  13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19,1,  4,  
  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 
  1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10,13, 16, 19, 1,  4,  7,  10, 13, 
  16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  4,  7,  
  10, 13, 16, 19, 1, 4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19, 1,  
  4,  7,  10, 13, 16, 19, 1,  4,  7,  10, 13, 16, 19)
  
  y  &lt;- c(0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 
  0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 
  0.1,0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 
  0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 
  0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 
  0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1,  0.1, 0.1, 0.1, 
  0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 
  0.1, 0.1, 0.1, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 
  0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 
  0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 
  0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 
  0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 
  0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 
  0.2, 0.2, 0.2, 0.2,0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 
  0.2, 0.2, 0.2, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 
  0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 
  0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 
  0.3,0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 
  0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 
  0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 
  0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 
  0.3, 0.3, 0.3, 0.3)
  
  wireframe(z ~ x * y, xlab="Parameter 1", ylab="Parameter 2", zlab="Fitness Value")
  </code></pre>
  
  <p>Using plotly I would like to do something similar, but it always says that z needs to be a matrix. And I don't understand how this maps to x and y.</p>
  
  <pre><code>library(plotly)
  p &lt;- plot_ly(x = x, y = y, z = z) %&gt;% add_surface()
  p
  </code></pre>
  
  <p>Even better would be a data.table example, because my data is actually in a data.table where z is a column, x and y are columns, and there are a large number of other parameter columns that will be used for plots. </p>
  
  <pre><code>df.ex &lt;- data.table(Output=z,Input1=x,Input2=y,Input3=rnorm(315),Input4 = 
  abs(rnorm(315)+.5))
  
  wireframe(df.ex$Output ~ df.ex$Input1 * df.ex$Input2)
  </code></pre>