Filtering two arrays to avoid Inf/NaN values

Posted by Gacek on Stack Overflow See other posts from Stack Overflow or by Gacek
Published on 2010-05-07T16:26:41Z Indexed on 2010/05/07 16:38 UTC
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I have two arrays of doubles of the same size, containg X and Y values for some plots.

I need to create some kind of protection against Inf/NaN values. I need to find all that pairs of values (X, Y) for which both, X and Y are not Inf nor NaN

If I have one array, I can do it using lambdas:

var filteredValues = someValues.Where(d=> !(double.IsNaN(d) || double.IsInfinity(d))).ToList();

Now, for two arrays I use following loop:

List<double> filteredX=new List<double>();
List<double> filteredX=new List<double>();

for(int i=0;i<XValues.Count;i++)
{
   if(!double.IsNan(XValues[i]) &&
         !double.IsInfinity(XValues[i]) && 
         !double.IsNan(YValues[i]) && 
         !double.IsInfinity(YValues[i]) )
     {
       filteredX.Add(XValues[i]);
       filteredY.Add(YValues[i]);
     }
}

Is there any way of filtering two arrays at the same time using LINQ/Lambdas, as it was done for single array?

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