314 lines
9.3 KiB
C#
314 lines
9.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Data;
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using System.IO;
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namespace mainProgram
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{
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class SpectralProcessor
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{
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public void OpenNolinerData()
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{
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}
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public void OpenCalData()
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{
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}
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public void NonLinearCorrection(double[] coefficient, double[] rawData,int bandnumber)
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{
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for (int i = 0; i < bandnumber; i++)
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{
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rawData[i] = rawData[i] / (coefficient[0]
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+ coefficient[1] * rawData[i]
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+ coefficient[2] * Math.Pow(rawData[i], 2)
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+ coefficient[3] * Math.Pow(rawData[i], 3)
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+ coefficient[4] * Math.Pow(rawData[i], 4)
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+ coefficient[5] * Math.Pow(rawData[i], 5)
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+ coefficient[6] * Math.Pow(rawData[i], 6)
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+ coefficient[7] * Math.Pow(rawData[i], 7)
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);
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}
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}
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public void RadCorrection(double[] calData, int i1,double[] rawData, int i2, int bandnumber)
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{
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for (int i = 0; i < bandnumber; i++)
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{
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rawData[i] = rawData[i] * calData[i] * (i1 * 1.0) / (i2 * 1.0);
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}
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}
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}
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public class SpectralDataReaderWriter
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{
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public SpectralDataReaderWriter(string csvPath)
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{
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mCsvPath = csvPath;
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OpenCSV();
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GetMetaData();
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}
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private string mCsvPath;
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public DataTable mDataTable = null;
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private int mTotalSpectrometer;
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private int mSpectralCount;
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public int findMaxColunmCount(string filePath)
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{
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Encoding encoding = GetType(filePath); //Encoding.ASCII;//
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DataTable dt = new DataTable();
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FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
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StreamReader sr = new StreamReader(fs, encoding);
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string strLine = "";
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string[] aryLine = null;
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int maxColunmCount = 0;
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int tmp;
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while ((strLine = sr.ReadLine()) != null)
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{
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aryLine = strLine.Split(',');
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tmp = aryLine.Length;
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if (maxColunmCount < tmp)
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{
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maxColunmCount = tmp;
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}
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}
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sr.Close();
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fs.Close();
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return maxColunmCount;
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}
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//https://www.jb51.net/article/193012.htm
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public void OpenCSV()//从csv读取数据返回table
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{
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mDataTable = new DataTable();
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int columnCount1 = findMaxColunmCount(mCsvPath);
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for (int i = 0; i < columnCount1; i++)
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{
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DataColumn dc1 = new DataColumn();
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mDataTable.Columns.Add(dc1);
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}
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Encoding encoding = GetType(mCsvPath); //Encoding.ASCII;//
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FileStream fs = new FileStream(mCsvPath, FileMode.Open, FileAccess.Read);
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StreamReader sr = new StreamReader(fs, encoding);
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//记录每次读取的一行记录
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string strLine = "";
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//记录每行记录中的各字段内容
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string[] aryLine = null;
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//逐行读取CSV中的数据
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while ((strLine = sr.ReadLine()) != null)
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{
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aryLine = strLine.Split(',');
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DataRow dr = mDataTable.NewRow();
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for (int j = 0; j < aryLine.Length; j++)
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{
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dr[j] = aryLine[j];
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}
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mDataTable.Rows.Add(dr);
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}
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sr.Close();
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fs.Close();
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}
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public void GetMetaData()
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{
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mTotalSpectrometer = int.Parse(mDataTable.Rows[1][1].ToString());
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mSpectralCount = mDataTable.Rows.Count - 3 - mTotalSpectrometer * 2;
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}
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public void SaveCSV(DataTable dt, string fullPath)//table数据写入csv
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{
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FileInfo fi = new FileInfo(fullPath);
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if (!fi.Directory.Exists)
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{
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fi.Directory.Create();
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}
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FileStream fs = new FileStream(fullPath, FileMode.Create, FileAccess.Write);
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StreamWriter sw = new StreamWriter(fs, Encoding.UTF8);
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string data = "";
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for (int i = 0; i < dt.Columns.Count; i++)//写入列名
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{
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data += dt.Columns[i].ColumnName.ToString();
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if (i < dt.Columns.Count - 1)
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{
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data += ",";
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}
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}
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sw.WriteLine(data);
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for (int i = 0; i < dt.Rows.Count; i++) //写入各行数据
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{
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data = "";
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for (int j = 0; j < dt.Columns.Count; j++)
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{
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string str = dt.Rows[i][j].ToString();
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str = str.Replace("\"", "\"\"");//替换英文冒号 英文冒号需要换成两个冒号
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if (str.Contains(',') || str.Contains('"')
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|| str.Contains('\r') || str.Contains('\n')) //含逗号 冒号 换行符的需要放到引号中
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{
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str = string.Format("\"{0}\"", str);
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}
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data += str;
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if (j < dt.Columns.Count - 1)
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{
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data += ",";
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}
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}
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sw.WriteLine(data);
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}
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sw.Close();
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fs.Close();
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}
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// 给定文件的路径，读取文件的二进制数据，判断文件的编码类型
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public Encoding GetType(string FILE_NAME)
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{
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FileStream fs = new FileStream(FILE_NAME, FileMode.Open, FileAccess.Read);
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Encoding r = GetType(fs);
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fs.Close();
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return r;
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}
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// 通过给定的文件流，判断文件的编码类型
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public Encoding GetType(FileStream fs)
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{
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byte[] Unicode = new byte[] { 0xFF, 0xFE, 0x41 };
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byte[] UnicodeBIG = new byte[] { 0xFE, 0xFF, 0x00 };
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byte[] UTF8 = new byte[] { 0xEF, 0xBB, 0xBF }; //带BOM
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Encoding reVal = Encoding.Default;
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BinaryReader r = new BinaryReader(fs, Encoding.Default);
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int i;
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int.TryParse(fs.Length.ToString(), out i);
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byte[] ss = r.ReadBytes(i);
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if (IsUTF8Bytes(ss) || (ss[0] == 0xEF && ss[1] == 0xBB && ss[2] == 0xBF))
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{
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reVal = Encoding.UTF8;
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}
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else if (ss[0] == 0xFE && ss[1] == 0xFF && ss[2] == 0x00)
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{
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reVal = Encoding.BigEndianUnicode;
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}
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else if (ss[0] == 0xFF && ss[1] == 0xFE && ss[2] == 0x41)
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{
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reVal = Encoding.Unicode;
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}
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r.Close();
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return reVal;
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}
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// 判断是否是不带 BOM 的 UTF8 格式
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private bool IsUTF8Bytes(byte[] data)
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{
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int charByteCounter = 1; //计算当前正分析的字符应还有的字节数
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byte curByte; //当前分析的字节.
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for (int i = 0; i < data.Length; i++)
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{
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curByte = data[i];
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if (charByteCounter == 1)
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{
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if (curByte >= 0x80)
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{
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//判断当前
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while (((curByte <<= 1) & 0x80) != 0)
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{
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charByteCounter++;
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}
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//标记位首位若为非0 则至少以2个1开始 如:110XXXXX...........1111110X
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if (charByteCounter == 1 || charByteCounter > 6)
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{
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return false;
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}
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}
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}
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else
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{
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//若是UTF-8 此时第一位必须为1
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if ((curByte & 0xC0) != 0x80)
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{
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return false;
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}
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charByteCounter--;
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}
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}
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if (charByteCounter > 1)
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{
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throw new Exception("非预期的byte格式");
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}
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return true;
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}
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public bool ChangeFileName(string OldPath, string NewPath)
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{
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bool re = false;
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try
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{
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if (File.Exists(OldPath))
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{
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File.Move(OldPath, NewPath);
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re = true;
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}
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}
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catch
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{
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re = false;
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}
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return re;
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}
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public bool SaveCSV(string fullPath, string Data)
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{
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bool re = true;
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try
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{
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FileStream FileStream = new FileStream(fullPath, FileMode.Append);
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StreamWriter sw = new StreamWriter(FileStream, Encoding.UTF8);
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sw.WriteLine(Data);
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//清空缓冲区
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sw.Flush();
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//关闭流
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sw.Close();
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FileStream.Close();
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}
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catch
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{
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re = false;
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}
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return re;
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}
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};
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}
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