String to useable variable?

I've parsed a string and if I print to log Debug.Log(GPSdata[2]); it does receive the appropriate data, however, I am unable to use the data as it is read only. I am trying to get GPSdata_received to populate a Gameobject's position and rotation, but it can't seem to get the information in the array to be useful. Any assistance is appreciated

Edit: I have added the string format of the string below.

$GPRMC,220516,A,5133.82,N,00042.24,W,173.8,231.8,130694,004.2,W * 70

The Editor error states:

Assets\Serial.cs(38,17): error CS0200: Property or indexer 'string.this[int]' cannot be assigned to -- it is read only.

Here is the code

Code (CSharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4. using System.IO.Ports;
5.  
6. public class Serial : MonoBehaviour
7. {
8.     SerialPort stream = new SerialPort("COM5", 9600);
9.     public GameObject GPS;
10.     public Vector3 rot;
11.     public Vector3 rot2;
12.     public string receivedstring;
13.     public string[] GPSdata;
14.     public string[] GPSdata_received;
15.     void Start()
16.     {
17.         stream.Open(); //Open the Serial Stream.
18.         Debug.Log("Port open");
19.     }
20.     void Update()
21.     {
22.         receivedstring = stream.ReadLine(); //Read the Serial Stream
23.         stream.BaseStream.Flush(); //Clear the serial information so we assure we get new information.
24.         if (receivedstring.Contains("GPRMC"))
25.         {
26.             string[] GPSdata = receivedstring.Split(','); //Seperate stream by "," Delimiter
27.             foreach (var GPSdata_received in GPSdata)
28.             {
29.                 GPSdata_received[0] = GPSdata[0]; // NMEA Format GPRMC
30.                 GPSdata_received[1] = GPSdata[1]; // TimeStamp UTC-0
31.                 GPSdata_received[2] = GPSdata[2]; // Validity
32.                 GPSdata_received[3] = GPSdata[3]; // Latitude
33.                 GPSdata_received[4] = GPSdata[4]; // North/South
34.                 GPSdata_received[5] = GPSdata[5]; // Longitude
35.                 GPSdata_received[6] = GPSdata[6]; // East/West
36.                 GPSdata_received[7] = GPSdata[7]; // Speed in Knots
37.                 GPSdata_received[8] = GPSdata[8]; // True Course
38.                 GPSdata_received[9] = GPSdata[9]; // Date Stamp
39.                 GPSdata_received[10] = GPSdata[10]; // Variation
40.                 GPSdata_received[11] = GPSdata[11]; // East/West
41.            
42.             }
43.         }        
44.     }
45.  

Changed my string parsing to :

Code (CSharp):

1.             string[] GPSdata = receivedstring.Split(','); //Seperate stream by "," Delimiter
2.             for (int i = 0; i < dataLength; i++)
3.             {
4.                 GPSdata_received[i] = GPSdata[i];
5.                 if (i == 2)
6.                 {
7.                     Debug.Log(GPSdata[i]);
8.                 }
9.             }

 

You've named your iterator variable in the foreach the same as your class-level member, which I reckon is where the error stems from. The whole foreach feels superfluous as you're indexing the resulting array manually anyway.

I don't know what format the data is in, you didn't give an example, but I imagine you want to use

float.Parse

or

float.TryParse

to convert it to "useable" data.

 

You are using the same var name for your member and your foreach loop, namely "GPSdata_received". The error makes sense since using it in the for loop means you are trying to write to the data you are reading from (which is readonly). Rename your member and put "GPSdata_received" to the right of the = sign and you should be fine.