title: plot 3D surface with R
body: <p>I am having a problem ploting my data as a 3D surface using this script:</p>
  
  <pre><code>wireframe(Z~X*Y, data=FI02, xlab="X", ylab="Y", main="Surface elevation", drape=TRUE, 
            colorkey=TRUE, screen=list(z=-60, x=-60))
  </code></pre>
  
  <p>The output is just a cube without data / surface (see attachment). What was my mistake?</p>
  
  <pre><code>"X" "Y" "Z" "Plot"
  552032.707  413894.885  10.8    2
  552033.707  413896.585  13.4    2
  552036.907  413899.685  18.5    2
  552039.307  413898.085  10.5    2
  552039.807  413894.585  11.2    2
  552044.107  413894.985  9   2
  552044.007  413895.035  11.5    2
  552043.607  413896.985  13.4    2
  552047.407  413897.885  8.2 2
  552045.207  413898.985  10.7    2
  552042.307  413902.085  9.4 2
  552040.907  413902.885  12.5    2
  552036.607  413901.585  11.4    2
  552036.207  413901.435  12.4    2
  552039.907  413905.285  18  2
  552036.707  413906.585  9.7 2
  552037.407  413908.785  6.3 2
  552038.907  413911.085  7.5 2
  552039.607  413911.285  16.8    2
  552041.107  413908.985  9.5 2
  552041.307  413910.385  14.5    2
  552042.207  413909.985  9.3 2
  552050.707  413911.985  12.5    2
  552048.907  413909.985  18.6    2
  552044.507  413906.585  6.7 2
  552047.807  413904.085  6.8 2
  552048.007  413904.285  12.8    2
  552050.407  413903.885  9.7 2
  552049.107  413909.785  5.2 2
  552050.507  413910.785  12.5    2
  552052.407  413908.685  16.5    2
  552057.907  413910.385  10.3    2
  552058.707  413909.785  18.5    2
  552058.907  413910.485  12.4    2
  552059.707  413908.385  15.3    2
  552060.307  413910.785  7.2 2
  552061.207  413911.985  11.8    2
  552071.007  413912.185  17  2
  552068.707  413911.385  8.3 2
  552069.107  413910.885  15.5    2
  552068.607  413908.485  8   2
  </code></pre>