private void btnQuant_Click(object sender, EventArgs e)
{
//Create a new instance for MapWinGIS.Table
MapWinGIS.Table myTable = new MapWinGIS.Table();
//Define the data source of Table instance
myTable.Open(@"D:\GISSampleData2\arabcntry.dbf", null);
//Define the index of the field will used in symbology
int myFieldIndex = 1;
//Get the number of rows in the table
int numberOfRows = myTable.NumRows;
//Create an array to store the cell values of the field
double[] myCellsValues = new double[numberOfRows];
//Populate the array with cell values restored from the Table instance
for (int i = 0; i < numberOfRows - 1; i++)
{
myCellsValues[i] =
System.Convert.ToDouble(myTable.get_CellValue(1, i));
}
//Get the minimum and maximum values
double minValue = myCellsValues.Min();
double maxValue = myCellsValues.Max();
//Create a new instance for MapWinGIS.ShapefileColorScheme
MapWinGIS.ShapefileColorScheme myScheme = new MapWinGIS.ShapefileColorScheme();
//Set the layer handler to the MapWinGIS.ShapefileColorScheme instance
myScheme.LayerHandle = intHandler;
//Set the field index to use in symbology
myScheme.FieldIndex = myFieldIndex;
//Create a new instance for MapWinGIS.ShapefileColorBreak
MapWinGIS.ShapefileColorBreak myBreak = new MapWinGIS.ShapefileColorBreak();
//Set the minimum value in the field as a start value
myBreak.StartValue = minValue;
//Set the start color of the scheme
myBreak.StartColor =
(UInt32)(System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.Aqua));
//Set the maximum value in the field as an end value
myBreak.EndValue = maxValue;
//Set the end color of the sceme
myBreak.EndColor =
(UInt32)(System.Drawing.ColorTranslator.ToOle(System.Drawing.Color.DarkBlue));
//Add the break to the color scheme
myScheme.Add(myBreak);
//Upgrade display using the scheme
axMap1.ApplyLegendColors(myScheme);
}
private static bool ImportScheme(MapWinGIS.ShapefileColorScheme sch, MapWinGIS.Shapefile sf, XmlElement e)
{
string FldName;
int i;
MapWinGIS.ShapefileColorBreak brk;
XmlNode n;
bool foundField = false;
if (e == null)
{
return(false);
}
FldName = e.Attributes["FieldName"].InnerText;
for (i = 0; i < sf.NumFields; i++)
{
if (sf.Field[i].Name.ToLower() == FldName.ToLower())
{
sch.FieldIndex = i;
foundField = true;
break;
}
}
if (!foundField)
{
MapWinGIS.Utility.Logger.Message("无法找到 field \'" + FldName + "\' 无法导入coloring scheme.");
return(false);
}
sch.Key = e.Attributes["Key"].InnerText;
for (i = 0; i < e.ChildNodes.Count; i++)
{
n = e.ChildNodes[i];
brk = new MapWinGIS.ShapefileColorBreak();
brk.Caption = n.Attributes["Caption"].InnerText;
brk.StartColor = ColorScheme.ColorToUInt(Color.FromArgb(System.Convert.ToInt32(n.Attributes["StartColor"].InnerText)));
brk.EndColor = ColorScheme.ColorToUInt(Color.FromArgb(System.Convert.ToInt32(n.Attributes["EndColor"].InnerText)));
brk.StartValue = n.Attributes["StartValue"].InnerText;
brk.EndValue = n.Attributes["EndValue"].InnerText;
sch.Add(brk);
}
return(true);
}
private static bool ExportScheme(MapWinGIS.ShapefileColorScheme Scheme, XmlDocument RootDoc, XmlElement Parent)
{
int i;
XmlElement brk;
XmlAttribute caption;
XmlAttribute sValue;
XmlAttribute eValue;
XmlAttribute sColor;
XmlAttribute eColor;
MapWinGIS.ShapefileColorBreak curBrk;
for (i = 0; i < Scheme.NumBreaks(); i++)
{
curBrk = Scheme.ColorBreak[i];
brk = RootDoc.CreateElement("Break");
caption = RootDoc.CreateAttribute("Caption");
sValue = RootDoc.CreateAttribute("StartValue");
eValue = RootDoc.CreateAttribute("EndValue");
sColor = RootDoc.CreateAttribute("StartColor");
eColor = RootDoc.CreateAttribute("EndColor");
caption.InnerText = curBrk.Caption;
sValue.InnerText = (curBrk.StartValue).ToString();
eValue.InnerText = (curBrk.EndValue).ToString();
sColor.InnerText = (ColorScheme.UIntToColor(curBrk.StartColor).ToArgb()).ToString();
eColor.InnerText = (ColorScheme.UIntToColor(curBrk.EndColor).ToArgb()).ToString();
brk.Attributes.Append(caption);
brk.Attributes.Append(sValue);
brk.Attributes.Append(eValue);
brk.Attributes.Append(sColor);
brk.Attributes.Append(eColor);
Parent.AppendChild(brk);
curBrk = null;
}
return(true);
}
/// <summary>
/// 将图层颜色设置输出到一个指定路径
/// </summary>
public static bool ExportScheme(Interfaces.Layer lyr, string path)
{
XmlDocument doc = new XmlDocument();
XmlElement mainScheme;
XmlElement root;
XmlAttribute schemeType;
root = doc.CreateElement("ColoringScheme");
if (lyr == null)
{
return(false);
}
if (lyr.LayerType == Interfaces.eLayerType.LineShapefile || lyr.LayerType == Interfaces.eLayerType.PointShapefile || lyr.LayerType == Interfaces.eLayerType.PolygonShapefile)
{
MapWinGIS.ShapefileColorScheme sch = (MapWinGIS.ShapefileColorScheme)lyr.ColoringScheme;
MapWinGIS.Shapefile sf = (MapWinGIS.Shapefile)lyr.GetObject();
XmlAttribute fldName;
XmlAttribute key;
if (sch == null || sch.NumBreaks() == 0)
{
return(false);
}
schemeType = doc.CreateAttribute("SchemeType");
schemeType.InnerText = "Shapefile";
root.Attributes.Append(schemeType);
mainScheme = doc.CreateElement("ShapefileColoringScheme");
fldName = doc.CreateAttribute("FieldName");
key = doc.CreateAttribute("Key");
fldName.InnerText = sf.Field[sch.FieldIndex].Name;
key.InnerText = sch.Key;
mainScheme.Attributes.Append(fldName);
mainScheme.Attributes.Append(key);
root.AppendChild(mainScheme);
doc.AppendChild(root);
if (ExportScheme(((MapWinGIS.ShapefileColorScheme)lyr.ColoringScheme), doc, mainScheme))
{
doc.Save(path);
return(true);
}
else
{
MapWinGIS.Utility.Logger.Message("导出 coloring scheme 失败.", "错误");
return(false);
}
}
else if (lyr.LayerType == Interfaces.eLayerType.Grid)
{
MapWinGIS.GridColorScheme sch = (MapWinGIS.GridColorScheme)lyr.ColoringScheme;
MapWinGIS.Grid grd = lyr.GetGridObject;
XmlAttribute AmbientIntensity;
XmlAttribute Key;
XmlAttribute LightSourceAzimuth;
XmlAttribute LightSourceElevation;
XmlAttribute LightSourceIntensity;
XmlAttribute NoDataColor;
XmlAttribute GridName;
XmlAttribute GroupName;
XmlAttribute ImageLayerFillTransparency;
XmlAttribute ImageUpsamplingMethod;
XmlAttribute ImageDownsamplingMethod;
if (sch == null || sch.NumBreaks == 0)
{
return(false);
}
GridName = doc.CreateAttribute("GridName");
GroupName = doc.CreateAttribute("GroupName");
schemeType = doc.CreateAttribute("SchemeType");
schemeType.InnerText = "Grid";
root.Attributes.Append(schemeType);
AmbientIntensity = doc.CreateAttribute("AmbientIntensity");
Key = doc.CreateAttribute("Key");
LightSourceAzimuth = doc.CreateAttribute("LightSourceAzimuth");
LightSourceElevation = doc.CreateAttribute("LightSourceElevation");
LightSourceIntensity = doc.CreateAttribute("LightSourceIntensity");
ImageLayerFillTransparency = doc.CreateAttribute("ImageLayerFillTransparency");
ImageUpsamplingMethod = doc.CreateAttribute("ImageUpsamplingMethod");
ImageDownsamplingMethod = doc.CreateAttribute("ImageDownsamplingMethod");
NoDataColor = doc.CreateAttribute("NoDataColor");
GridName.InnerText = lyr.Name;
GroupName.InnerText = Program.frmMain.Legend.Groups.ItemByHandle(lyr.GroupHandle).Text;
AmbientIntensity.InnerText = (sch.AmbientIntensity).ToString();
Key.InnerText = sch.Key;
LightSourceAzimuth.InnerText = (sch.LightSourceAzimuth).ToString();
LightSourceElevation.InnerText = (sch.LightSourceElevation).ToString();
LightSourceIntensity.InnerText = (sch.LightSourceIntensity).ToString();
NoDataColor.InnerText = (ColorScheme.UIntToColor(sch.NoDataColor).ToArgb()).ToString();
ImageLayerFillTransparency.InnerText = ((System.Convert.ToInt32(lyr.ImageLayerFillTransparency * 100)) / 100).ToString();
MapWinGIS.Image img = new MapWinGIS.Image();
img = (MapWinGIS.Image)(Program.frmMain.MapMain.get_GetObject(lyr.Handle));
if (img.DownsamplingMode == MapWinGIS.tkInterpolationMode.imBicubic)
{
ImageDownsamplingMethod.InnerText = "Bicubic";
}
else if (img.DownsamplingMode == MapWinGIS.tkInterpolationMode.imBilinear)
{
ImageDownsamplingMethod.InnerText = "Bilinear";
}
else if (img.DownsamplingMode == MapWinGIS.tkInterpolationMode.imHighQualityBicubic)
{
ImageDownsamplingMethod.InnerText = "HighQualityBicubic";
}
else if (img.DownsamplingMode == MapWinGIS.tkInterpolationMode.imHighQualityBilinear)
{
ImageDownsamplingMethod.InnerText = "HighQualityBilinear";
}
else if (img.DownsamplingMode == MapWinGIS.tkInterpolationMode.imNone)
{
ImageDownsamplingMethod.InnerText = "None";
}
else
{
ImageDownsamplingMethod.InnerText = "None";
}
if (img.UpsamplingMode == MapWinGIS.tkInterpolationMode.imBicubic)
{
ImageUpsamplingMethod.InnerText = "Bicubic";
}
else if (img.UpsamplingMode == MapWinGIS.tkInterpolationMode.imBilinear)
{
ImageUpsamplingMethod.InnerText = "Bilinear";
}
else if (img.UpsamplingMode == MapWinGIS.tkInterpolationMode.imHighQualityBicubic)
{
ImageUpsamplingMethod.InnerText = "HighQualityBicubic";
}
else if (img.UpsamplingMode == MapWinGIS.tkInterpolationMode.imHighQualityBilinear)
{
ImageUpsamplingMethod.InnerText = "HighQualityBilinear";
}
else if (img.UpsamplingMode == MapWinGIS.tkInterpolationMode.imNone)
{
ImageUpsamplingMethod.InnerText = "None";
}
else
{
ImageUpsamplingMethod.InnerText = "None";
}
mainScheme = doc.CreateElement("GridColoringScheme");
mainScheme.Attributes.Append(AmbientIntensity);
mainScheme.Attributes.Append(Key);
mainScheme.Attributes.Append(LightSourceAzimuth);
mainScheme.Attributes.Append(LightSourceElevation);
mainScheme.Attributes.Append(LightSourceIntensity);
mainScheme.Attributes.Append(NoDataColor);
mainScheme.Attributes.Append(ImageLayerFillTransparency);
mainScheme.Attributes.Append(ImageUpsamplingMethod);
mainScheme.Attributes.Append(ImageDownsamplingMethod);
root.AppendChild(mainScheme);
root.Attributes.Append(GridName);
root.Attributes.Append(GroupName);
doc.AppendChild(root);
if (ExportScheme(((MapWinGIS.GridColorScheme)lyr.ColoringScheme), doc, mainScheme))
{
doc.Save(path);
return(true);
}
else
{
MapWinGIS.Utility.Logger.Message("导出 coloring scheme 失败.", "错误");
return(false);
}
}
return(false);
}
/// <summary>
/// 从mwsr中取得每个shape的颜色设置，并应用到图层中
/// </summary>
private void LoadShpFileColoringScheme(XmlElement legend, int handle)
{
MapWinGIS.ShapefileColorScheme shpscheme = new MapWinGIS.ShapefileColorScheme();
int numOfBreaks;
MapWinGIS.ShapefileColorBreak _break;
int i;
try
{
//设置ShapefileColorScheme
shpscheme.FieldIndex = int.Parse(legend.Attributes["FieldIndex"].InnerText);
shpscheme.LayerHandle = handle;
shpscheme.Key = legend.Attributes["Key"].InnerText;
try
{
Program.frmMain.Legend.Layers.ItemByHandle(handle).ColorSchemeFieldCaption = legend.Attributes["SchemeCaption"].InnerText;
}
catch
{
}
//设置所有的breaks
numOfBreaks = legend["ColorBreaks"].ChildNodes.Count;
for (i = 0; i < numOfBreaks; i++)
{
object with_1 = legend["ColorBreaks"].ChildNodes[i];
_break = new MapWinGIS.ShapefileColorBreak();
_break.Caption = legend["ColorBreaks"].ChildNodes[i].Attributes["Caption"].InnerText;
_break.StartColor = System.Convert.ToUInt32(legend["ColorBreaks"].ChildNodes[i].Attributes["StartColor"].InnerText);
_break.EndColor = System.Convert.ToUInt32(legend["ColorBreaks"].ChildNodes[i].Attributes["EndColor"].InnerText);
if (legend["ColorBreaks"].ChildNodes[i].Attributes["StartValue"].InnerText == "(null)")
{
_break.StartValue = null;
}
else
{
_break.StartValue = legend["ColorBreaks"].ChildNodes[i].Attributes["StartValue"].InnerText;
}
if (legend["ColorBreaks"].ChildNodes[i].Attributes["EndValue"].InnerText == "(null)")
{
_break.EndValue = null;
}
else
{
_break.EndValue = legend["ColorBreaks"].ChildNodes[i].Attributes["EndValue"].InnerText;
}
if (legend["ColorBreaks"].ChildNodes[i].Attributes["Visible"] != null && legend["ColorBreaks"].ChildNodes[i].Attributes["Visible"].InnerText != "")
{
_break.Visible = bool.Parse(legend["ColorBreaks"].ChildNodes[i].Attributes["Visible"].InnerText);
}
shpscheme.Add(_break);
}
if (numOfBreaks > 0)
{
//set that layers scheme and redraw the legend
//设置Layer的颜色设置，并重回legend
Program.frmMain.Layers[handle].ColoringScheme = shpscheme;
Program.frmMain.Legend.Refresh();
}
}
catch (System.Exception e)
{
m_ErrorMsg += "在LoadShpFileColoringScheme()方法中出错：" + e.Message + "\r\n";
m_ErrorOccured = true;
}
}