Convert List[] to double[,]

Asked May 25 '15 at 12:19

Active May 25 '15 at 12:19

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i want to convert an Array of Lists

public static List<string>[] Data { get; private set; }

to a 2 dimensional Array of double.

My attempt looks like this:

var data = Data.Select(c => c.Select(double.Parse).ToArray()).ToArray();

But with this method i got as a result a double[][], an array of arrays. How can i convert to a 2-dimensional array double[,]?

Each List<string> is a column.

For example Data is an array of 10 List<string>. Each List has 160.000 entries. I want to convert this to a 10x160.000 matrix.

Thanks in ahead.

asked May 25 '15 at 12:19

christian212

1

Use a loop like in the linked question/answer and insert the `double.Parse()`. – Raidri May 25 '15 at 12:22
1

Multidimensional array doesn't work well with linq. You need to use a for loop. – Sriram Sakthivel May 25 '15 at 12:26
Thanks for the answer. My idea was to avoid a for loop (2 of them), to gain speed improvements. But i tried the solution above, and it works well. So thank you for your help. – christian212 May 25 '15 at 12:33

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