Question

I have such a list List<Double[,]>. Let’s call each 2-dimensional array in the list a layer. So I should compare each element in each layer and extract max. And construct layer of max values.

How do I do that? Maybe with use of LINQ? Or foreach loop construction?

Help!

And Thanks!

Answer 1

Assuming that all your layers are the same size sizeXxsizeY, because otherwise this makes no sense:

var maxLayer = new Double[sizeX,sizeY];

for( int x = 0; x <= maxLayer.GetUpperBound(0); x++ )
    for( int y = 0; y <= maxLayer.GetUpperBound(1); y++ )
        maxLayer[x,y] = Double.NegativeInfinity;

foreach( Double[,] layer in list )
    for( int x = 0; x <= maxLayer.GetUpperBound(0); x++ )
        for( int y = 0; y <= maxLayer.GetUpperBound(1); y++ )
            maxLayer[x,y] = Math.Max( maxLayer[x,y], layer[x,y] );

Nothing clever here.