public void DoSimulation()
{
try
{
//0准备开始模拟
ResourceManager resourceManager = VariableMaintainer.CurrentResourceManager;
FormANNCAWizard formANNCAWizard = VariableMaintainer.CurrentFormANNCAWizard;
Random random = new Random();
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
//0.1获得数据
int rowCount = formANNCAWizard.CurrentStructRasterMetaData.RowCount;
int columnCount = formANNCAWizard.CurrentStructRasterMetaData.ColumnCount;
float[,] simulationStartImage = formANNCAWizard.SimulationStartImage;
float[,] simulationEndImage = formANNCAWizard.SimulationEndImage;
float[,] simulationImage = formANNCAWizard.SimulationImage;
//0.2计算初始每种土地利用类型的单元数量
List <StructLanduseInfoAndCount> listLanduseInfoAndCount; //记录每种土地利用类型的单元数
listLanduseInfoAndCount = new List <StructLanduseInfoAndCount>();
StructLanduseInfoAndCount landuseInfoAndCount;
foreach (StructLanduseInfo structLanduseInfo in formANNCAWizard.LandUseClassificationInfo.AllTypes)
{
landuseInfoAndCount = new StructLanduseInfoAndCount();
landuseInfoAndCount.structLanduseInfo = structLanduseInfo;
landuseInfoAndCount.LanduseTypeCount = 0;
listLanduseInfoAndCount.Add(landuseInfoAndCount);
}
for (int i = 0; i < rowCount; i++)
{
for (int j = 0; j < columnCount; j++)
{
CommonLibrary.GeneralOpertor.ChangeLandUseCount(simulationStartImage[i, j], -10000, listLanduseInfoAndCount);
}
}
//0.3显示输出结果窗体和图表窗体
dockableWindowGraphy.GraphTitle = resourceManager.GetString("String40");
dockableWindowGraphy.XAxisTitle = resourceManager.GetString("String41");
dockableWindowGraphy.YAxisTitle = resourceManager.GetString("String42");
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String43"));
Application.DoEvents();
//0.4绘制初始的图表
List <string> listPointPairListName = new List <string>();
List <string> notToDrawList = new List <string>();
notToDrawList.Add(resourceManager.GetString("String44"));
dockableWindowGraphy.CreateGraph(listLanduseInfoAndCount, notToDrawList, out listPointPairListName);
dockableWindowGraphy.RefreshGraph();
int convertedCellCount = 0; //模拟中总共转换的元胞数量
int randomRow, randomColumn; //Monte Carlo方法选取的随机行和随机列
int convertCountInOneIteration = formANNCAWizard.ConvertCount / formANNCAWizard.Iterations; //每次迭代应转换的数量
int convertCountOnce = 0; //每次迭代已经转换的数量
float oldValue, newValue; //每次转换前土地利用类型的新值和旧值
int iteration = 0; //迭代的次数
List <float> listLanduseValues = new List <float>(); //记录土地利用类型值的List
for (int j = 0; j < formANNCAWizard.LandUseClassificationInfo.AllTypesCount; j++)
{
listLanduseValues.Add(formANNCAWizard.LandUseClassificationInfo.AllTypes[j].LanduseTypeValue);
}
int neiWindowSize = formANNCAWizard.NeighbourWindowSize;
int inputNeuronsCount = formANNCAWizard.InputNeuronsCount;
int outputNeuronsCount = formANNCAWizard.OutputNeuronsCount;
//2.开始进行转换
while (convertedCellCount < formANNCAWizard.ConvertCount)
{
convertCountOnce = 0;
//2.3选择元胞与随机比较进行转换
//完成一次迭代
while (convertCountOnce < convertCountInOneIteration)
{
//随机选择一个栅格进行计算
randomRow = random.Next(0, rowCount);
randomColumn = random.Next(0, columnCount);
//计算逻辑为：
//这里需要首先获取当前元胞的输入值
//然后通过神经网络计算每种土地利用类型的概率，乘以随机量
//然后选出最高的概率
//再查看是否是同样的土地利用类型，如果不是则转变
//如果不是并且概率大于一个值，则进行转变（目前先不用）
//如果是空值，则不进行计算
if (simulationImage[randomRow, randomColumn] == -9999f)
{
continue;
}
double[] tempInputsArray = new double[inputNeuronsCount];
double[] tempOutputsArray = new double[outputNeuronsCount];
//获取该栅格的空间变量值
for (int i = 0; i < formANNCAWizard.ListVaribaleImages.Count; i++)
{
tempInputsArray[i] = formANNCAWizard.ListVaribaleImages[i][randomRow, randomColumn];
}
//获取该栅格的邻域值
NeighbourOperator neighbourOperator = new NeighbourOperator();
float[] counts = neighbourOperator.GetNeighbourCount(simulationImage, randomRow, randomColumn, neiWindowSize,
rowCount, columnCount, formANNCAWizard.LandUseClassificationInfo.AllTypesCount, listLanduseValues);
for (int z = 0; z < counts.Length; z++)
{
tempInputsArray[formANNCAWizard.ListVaribaleImages.Count + z] = counts[z] / (neiWindowSize * neiWindowSize - 1);
}
//获取该栅格的土地利用类型
tempInputsArray[inputNeuronsCount - 1] = simulationImage[randomRow, randomColumn];
//计算神经网络输出的概率值
double[] output = formANNCAWizard.ANN.ANNActivationNetwork.Compute(tempInputsArray);
double maxOutput = 0;
int maxIndex = -1;
Random r = new Random(1);
double gamma;
double disturbance;
double probability;
double[] probabilityArray = new double[output.Length];
for (int k = 0; k < output.Length; k++)
{
gamma = random.NextDouble();
disturbance = 1 + Math.Pow((-Math.Log(gamma)), formANNCAWizard.Delta);
probabilityArray[k] = disturbance * output[k];
if (maxOutput < probabilityArray[k])
{
maxOutput = probabilityArray[k];
maxIndex = k;
}
}
probability = maxOutput; //计算最高值的最终概率
//未使用邻域因素模拟较为散，所以加入邻域因素。但可能导致难以达到需要的转换数量，模拟时间过长。
double neiValue = 0f;
for (int t = 0; t < listLanduseValues.Count; t++)
{
if (listLanduseValues[t] == formANNCAWizard.LandUseClassificationInfo.UrbanValues[0].LanduseTypeValue)
{
neiValue = Convert.ToDouble(counts[t]) / (neiWindowSize * neiWindowSize - 1);
break;
}
}
probability = probability * neiValue;
//得到应转变为的土地利用类型值，以及当前土地利用类型值
newValue = formANNCAWizard.LandUseClassificationInfo.AllTypes[maxIndex].LanduseTypeValue;
oldValue = simulationImage[randomRow, randomColumn];
//oldValue有时取到0值等不正确的值
bool isOldValueCorrect = false;
for (int w = 0; w < formANNCAWizard.LandUseClassificationInfo.AllTypes.Count; w++)
{
if (oldValue == formANNCAWizard.LandUseClassificationInfo.AllTypes[w].LanduseTypeValue)
{
isOldValueCorrect = true;
}
}
if (!isOldValueCorrect)
{
continue;
}
//根据转换矩阵进行判断是否可以转换
DataTable dtMatrix = formANNCAWizard.DTMatrix;
int oldValueIndex = -1;
for (int k = 0; k < formANNCAWizard.LandUseClassificationInfo.AllTypesCount; k++)
{
if (formANNCAWizard.LandUseClassificationInfo.AllTypes[k].LanduseTypeValue == oldValue)
{
oldValueIndex = k;
break;
}
}
string canConvert = dtMatrix.Rows[oldValueIndex][maxIndex].ToString();
if (canConvert == "0")
{
continue;
}
//与设定的阈值进行比较
double convertThreshold = formANNCAWizard.ConvertThreshold;
if ((oldValue != newValue) && (probability >= convertThreshold))
{
simulationImage[randomRow, randomColumn] = newValue;
CommonLibrary.GeneralOpertor.ChangeLandUseCount(newValue, oldValue, listLanduseInfoAndCount);
//以城市用地的转变量为总转变量的标准
for (int w = 0; w < formANNCAWizard.LandUseClassificationInfo.UrbanValues.Count; w++)
{
if (newValue == formANNCAWizard.LandUseClassificationInfo.UrbanValues[w].LanduseTypeValue)
{
convertCountOnce++;
convertedCellCount++;
}
}
//System.Diagnostics.Debug.WriteLine(convertedCellCount + " - Old: " + oldValue + " New: " + newValue);
}
}
iteration++;
System.Diagnostics.Debug.WriteLine("iteration: " + iteration);
//2.4.刷新外部界面并输出中间结果数据
if (convertedCellCount == 1 || (iteration % formANNCAWizard.RefreshInterval == 0 && convertedCellCount != 0))
{
//刷新图像
formANNCAWizard.SimulationImage = simulationImage;
VariableMaintainer.IsNeedRefresh = true;
//刷新图表窗体
string landuseTypeName = "";
for (int k = 0; k < listLanduseInfoAndCount.Count; k++)
{
for (int l = 0; l < listPointPairListName.Count; l++)
{
if (System.Globalization.CultureInfo.CurrentCulture.Parent.Name == "zh-CHS")
{
landuseTypeName = listLanduseInfoAndCount[k].structLanduseInfo.LanduseTypeChsName;
}
else if (System.Globalization.CultureInfo.CurrentCulture.Parent.Name == "zh-CHT")
{
landuseTypeName = listLanduseInfoAndCount[k].structLanduseInfo.LanduseTypeChtName;
}
else
{
landuseTypeName = listLanduseInfoAndCount[k].structLanduseInfo.LanduseTypeEnName;
}
if (landuseTypeName == listPointPairListName[l])
{
dockableWindowGraphy.UpdateData(iteration, listLanduseInfoAndCount[k].LanduseTypeCount, l);
}
}
}
dockableWindowGraphy.RefreshGraph();
//刷新输出结果窗体
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String45") + iteration.ToString()
+ resourceManager.GetString("String46"));
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String47") + convertedCellCount.ToString());
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.ScrollTextbox();
Application.DoEvents();
}
//输出中间结果
if (formANNCAWizard.IsOutput && (iteration % formANNCAWizard.OutputImageInterval == 0))
{
GeneralOpertor.WriteDataFloat(formANNCAWizard.OutputFolder + @"\" + GeneralOpertor.GetNowString()
+ "_ann_iterate_" + iteration.ToString() + @".txt", simulationImage, rowCount, columnCount);
}
}
//3.完成模拟，输出结果。
stopWatch.Stop();
VariableMaintainer.IsSimulationFinished = true;
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String48"));
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String49") +
GeneralOpertor.GetElapsedTimeString(stopWatch.Elapsed));
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText("\n");
//修改结果栅格的属性表
IWorkspaceFactory workspaceFactory = new RasterWorkspaceFactoryClass();
IRasterWorkspace rasterWorkspace = workspaceFactory.OpenFromFile(
VariableMaintainer.CurrentFormANNCAWizard.OutputFolder, 0) as IRasterWorkspace;
IRasterDataset rasterDataset = rasterWorkspace.OpenRasterDataset(VariableMaintainer.CurrentFoucsMap.get_Layer(0).Name);
IRasterDatasetEdit3 rasterDatasetEdit3 = rasterDataset as IRasterDatasetEdit3;
rasterDatasetEdit3.BuildAttributeTable();
IRasterDataset3 rasterDataset3 = rasterDataset as IRasterDataset3;
rasterDataset3.Refresh();
if (formANNCAWizard.SimulationEndImageName != "")
{
//GeneralOpertor.WriteDataFloat(formLogisticCAWizard.OutputFolder + @"\CA_ANN_Reslut" + GeneralOpertor.GetNowString() + ".txt",
// simulationImage, rowCount,columnCount);
DataTable dtMatrixNumber = GeneralOpertor.GetMultiTypesMatrix(
simulationImage, simulationEndImage, rowCount, columnCount, formANNCAWizard.LandUseClassificationInfo);
double overallAccuracy = 0d;
double kappa = 0d;
GeneralOpertor.GetMultiTypesAccuracy(dtMatrixNumber, ref overallAccuracy, ref kappa, formANNCAWizard.LandUseClassificationInfo);
FormConfusionMatrix formConfusionMatrix = new FormConfusionMatrix();
formConfusionMatrix.DataTableValues = dtMatrixNumber;
DataTable dtMatrixPercent = dtMatrixNumber.Clone();
GeneralOpertor.CopyDataTableValues(dtMatrixNumber, dtMatrixPercent);
formConfusionMatrix.DataTablePercents = dtMatrixPercent;
formConfusionMatrix.DataGridViewConfusionMatrix.DataSource = dtMatrixNumber;
formConfusionMatrix.LabelOverallAccuracy.Text = (overallAccuracy * 100).ToString("0.00") + " %";
formConfusionMatrix.LabelKappa.Text = kappa.ToString("0.000");
float[] fomValues = GeneralOpertor.GetMultiFoMAccuracy(simulationStartImage, simulationEndImage, simulationImage, rowCount, columnCount);
formConfusionMatrix.LabelFoMValues.Text = "A: " + fomValues[0] + "\nB: " + fomValues[1] +
"\nC: " + fomValues[2] + "\nD: " + fomValues[3];
formConfusionMatrix.LabelFoM.Text = fomValues[4].ToString("0.000");
formConfusionMatrix.LabelPA.Text = fomValues[5].ToString("0.000");
formConfusionMatrix.LabelUA.Text = fomValues[6].ToString("0.000");
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String84"));
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(GeneralOpertor.WriteCoufusionMatrix(dtMatrixPercent));
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String83"));
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String85") + (overallAccuracy * 100).ToString("0.00") + " %");
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String86") + kappa.ToString("0.000"));
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String87") + fomValues[4].ToString("0.000"));
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String88") + fomValues[5].ToString("0.000"));
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText(resourceManager.GetString("String89") + fomValues[6].ToString("0.000"));
dockableWindowOutput.AppendText("\n");
formConfusionMatrix.Text = resourceManager.GetString("String105") + " - " + formANNCAWizard.SimulationLayerName;
formConfusionMatrix.ShowDialog();
}
dockableWindowOutput.AppendText("-------------------------------------------");
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.AppendText("\n");
dockableWindowOutput.ScrollTextbox();
Application.DoEvents();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}