Example #1
0
 private long GetFOFIdPrefix(LittleFOF fof)
 {
     if (fof == null)
         return 0;
     else
         return fof.fofId * multiplier;
 }
Example #2
0
        /// <summary>
        /// 
        /// </summary>
        /// <param name="file"></param>
        /// <returns></returns>
        void ReadLittleSubHalos(String file, LittleFOF[] fofs)
        {
            if (fofs.Length == 0)
                return;
            List<String[]> rows = ReadGAVO_CSV(file + "\\subhalo.csv");
            LittleFOF currentFOF = fofs[0];
            int subhaloCount = 0;
            int ifof = 0;
            for (int i = 1; i < rows.Count; i++)
            {
                String[] words = rows[i];
                LittleSubHalo sh = new LittleSubHalo();
                sh.subhaloId = long.Parse(words[0]);
                sh.np = Int32.Parse(words[1]);
                if (sh.fofId != currentFOF.fofId)
                {
                    while (true)
                    {
                        ifof++;
                        currentFOF = fofs[ifof];
                        if (currentFOF.fofId == sh.fofId)
                            break;
                        if (ifof >= fofs.Length)
                        {
                            throw new Exception("ReadLittleSubHalos: Invalid state, found subhalo without fof group");
                        }
                    }
                    subhaloCount = 0;
                }
                try
                {
                    currentFOF.subhalos[subhaloCount++] = sh;
                }
                catch (IndexOutOfRangeException ioe)
                {
                    DebugOut.PrintLine("Help");
                    throw ioe;
                }
            }
            // set first particle ids
            foreach (LittleFOF fof in fofs)
            {
                if (fof.numSubs == 0)
                    continue;
                long particleId = GetFOFIdPrefix(fof);
                foreach (LittleSubHalo subhalo in fof.subhalos)
                {
                    subhalo.firstParticleFofId = particleId;
                    particleId += subhalo.np;
                }

            }
        }
Example #3
0
 /// <summary>
 /// Read and write snapshot files as ordered by Mik Boylan-Kolchin.
 /// Write IDs
 /// </summary>
 /// <param name="snap"></param>
 /// <summary>
 /// 
 /// </summary>
 /// <param name="file"></param>
 /// <returns></returns>
 LittleFOF[] ReadLittleFOFs(String file)
 {
     List<String[]> rows = ReadGAVO_CSV(file+"\\fof.csv");
     LittleFOF[] fofs = new LittleFOF[rows.Count - 1];
     for (int i = 1; i < rows.Count; i++)
     {
         String[] words = rows[i];
         LittleFOF fof = new LittleFOF();
         fof.fofId = long.Parse(words[0]);
         fof.np = Int32.Parse(words[1]);
         fof.numSubs = Int32.Parse(words[2]);
         if(fof.numSubs > 0)
             fof.subhalos = new LittleSubHalo[fof.numSubs];
         fofs[i - 1] = fof;
     }
     return fofs;
 }