MathGroup Archive 2005

[Date Index] [Thread Index] [Author Index]

Search the Archive

Intepolation of an array with missing points

  • To: mathgroup at
  • Subject: [mg62323] Intepolation of an array with missing points
  • From: dkjk at
  • Date: Sat, 19 Nov 2005 23:19:19 -0500 (EST)
  • Sender: owner-wri-mathgroup at


I have an array representing the heights of a surface over the x-y
plane. Unfortunately, the heights at several points are unknown so have
been replaced by empty strings. For an example, see

arr = Import["output.csv"] // MatrixForm

My ultimate goal is to create an interpolating function of this data
which will allow me to produce a contour plot. As a very inexperienced
user of Mathematica, my initial thoughts have been someting like this:

1. Convert arr to an list of 3-tuples, ignoring the empty entries. (not
sure how to do this)
2. Use Interpolation to create an InterpolatingFunction which can be
plotted in ContourPlot.

Does anyone know of a simple method to achieve 1. and whether or not 2.
will work in this case?



  • Prev by Date: Re: Same scaling for plots/ charts
  • Next by Date: Re: Recursion
  • Previous by thread: Thanks to dave bailey and chris chiasson, NDsolve problem solved!
  • Next by thread: Re: Intepolation of an array with missing points