Splitting a string array

This should work for you.

Regex regexObj = new Regex(@"\w\d+"); # matches a character followed by a sequence of digits
Match matchResults = regexObj.Match(subjectString);
while (matchResults.Success) {
    matchResults = matchResults.NextMatch(); #two mathches N36102 and W114383
}

If you have the fixed format every time you can just do this:

string[] split_data = data_string.Insert(data_string.IndexOf("W"), ",")
    .Split(",", StringSplitOptions.None); 

Here you insert a recognizable delimiter into your string and then split it by this delimiter.

Forgive me if this doesn't quite compile, but I'd just break down and write the string processing function by hand:

public static IEnumerable<string> Split(string str)
{
    char [] chars = str.ToCharArray();
    int last = 0;
    for(int i = 1; i < chars.Length; i++) {
        if(char.IsLetter(chars[i])) {
            yield return new string(chars, last, i - last);
            last = i;
        }
    }

    yield return new string(chars, last, chars.Length - last);
}

If you use C#, please try:

String[] code = new Regex("(?:([A-Z][0-9]+))").Split(text).Where(e => e.Length > 0 && e != ",").ToArray();

in case you're only looking for the format NxxxxxWxxxxx, this will do just fine :

Regex r = new Regex(@"(N[0-9]+)(W[0-9]+)");

Match mc = r.Match(arr[i]);
string N = mc.Groups[1];
string W = mc.Groups[2];

Using the 'Split' and 'IsLetter' string functions, this is relatively easy in c#.

Don't forget to write unit tests - the following may have some corner case errors!

    // input has form "N36102W114383, N36102W114382"
    // output: "N36102", "W114383", "N36102", "W114382", ...
    string[] ParseSequenceString(string input)
    {
        string[] inputStrings = string.Split(',');

        List<string> outputStrings = new List<string>();

        foreach (string value in inputstrings) {
            List<string> valuesInString = ParseValuesInString(value);
            outputStrings.Add(valuesInString);
        }

        return outputStrings.ToArray();
    }

    // input has form "N36102W114383"
    // output: "N36102", "W114383"
    List<string> ParseValuesInString(string inputString)
    {
        List<string> outputValues = new List<string>(); 
        string currentValue = string.Empty;
        foreach (char c in inputString)
        {
            if (char.IsLetter(c))
            {
                if (currentValue .Length == 0)
                {
                    currentValue += c;
                } else
                {
                    outputValues.Add(currentValue);
                    currentValue = string.Empty;
                }
            }
            currentValue += c;
        }
        outputValues.Add(currentValue);
        return outputValues;
    }