title: MATLAB: Interactive tool to "draw" a Plot?
body: <p>Do you know a simple way to draw arbitrary splines or lines in a plot-figure? I've got the following figure which I created in powerpoint with more or less arbitrary spline-curve (blue) but I'd like to do the same in MATLAB now because of a better look in the final plot-output.</p>
  
  <p>I'm now wondering if I've got to manually "find" data-values to draw some sort of spline (which looks roughly like the blue one below) myself or if there's maybe a tool where I can simply insert some points into a plot interactively and there's a curve fitted though it to create something similar!?</p>
  
  <p>The green and red lines I can figure out myself (probably also have to plot them manually, do I)?!?</p>
  
  <p>Thanks in advance!</p>
  
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  <p><strong>EDIT</strong>
  Okay I found a way myself doing it in MATLAB to gnerate a nice spline: Use <code>splinetool</code>, then either use an example or import some data and then you can interactively add and delete points until your spline looks roughly like it should. Then file->print to figure and then tools->edit plot! You can then delete everything you don't need, add title, xlabel and ylabel etc. and then export it to latex with e.g. matlab2tikz :-) Very nice stuff!!</p>