Latest Contributions by kju

by " IMultivariateOp.MLClassify" method, I can classify the original raster to a new raster,as the figure below: [ATTACH=CONFIG]29929[/ATTACH] how to convert each of them to raster to polygon,and give them some atttribute like the names and the area? I search for noting,can someone give me some ideal of detail or some code related? Thanks ... ... View more

using the "IMultivariateOp.MLClassify" method, I can classify the raster into many classes,you know that. But now, what I am going to do is to analyze "where and how much the forest areas are decreasing or increasing",That is,for instance,I got two raster layers and I must perform the overlay of raster someway like "raster calculator" in ArcToolbox.So how to perform it using C# in ArcObject? Thanks very much. ... View more

suppose that the shape of the polygon is rectangle,how can I get all the corner coordinates,for example,how to get them by programing in arcgis engine?Thanks very much. [ATTACH=CONFIG]29681[/ATTACH] when switch the polygon to the "editor" status in arcmap,we can see each of the point, [ATTACH=CONFIG]29682[/ATTACH] so how to get them in arcgis engine programing? thanks... ... View more

use the "Image classification" we can classify the raster image by "supervised classification",but how to calculate their area?I mean that,If the classification number is 4,and How can I calculate each of the four item area? Thank you very much. ... View more

I recently gonna an ideal of building a webgis system that using the arcgis server api for silverlight,but I found that silverligth just can build 2d rather than 3d. searching relation info by Google,some saying that it must relate to "balder" or something else. I search for ideal that building 3d map using the google plugin called "stretchup" in arcscene,I never learn anything  about the 3d and I do not if i can usr silverlight and balder to spatial analysis it(3d map building by stretchup in arcscene). Thank you !!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ... View more

My computer is 32-bit Operation,and the ArcServer needs 64-bit,you know that.So I have to install the ArcServer in my VM.So what are the next steps?Install another part in my real Operation-System like ADF or what ? Thanks. ... View more

Using the same way to load the .mxd document as in 10.1 version in arcgis engine,but all the shape files is invisible in the TOCControl,but the raster file load well.I have replaced many shape files but not work.I do not know why.Can any body help me?Thanks very much. ... View more

Post my code at first: #region Member.         private AxMapControl _MapCon = null;    //MapControl from the main form.         private IGeometry _BufferResult = null;         #endregion         public FrmBufferAnalyst(AxMapControl mapControl) {             this._MapCon = mapControl;             InitializeComponent();         }         private void FrmBufferAnalyst_Load(object sender, EventArgs e) {             ShowSelectedFeatures();         }         /// <summary>         /// //Show selected feature.         /// </summary>         void ShowSelectedFeatures() {             lbox_selectedFeature.Items.Clear();             ISelection fSelection = this._MapCon.Map.FeatureSelection;             IEnumFeature enumF = (IEnumFeature)fSelection;             IFeature f = null;             while((f = enumF.Next()) != null) {                 lbox_selectedFeature.Items.Add("Feature layer:" + f.Class.AliasName);                 lbox_selectedFeature.Items.Add("OID:" + f.OID);                 lbox_selectedFeature.Items.Add("-----");    //Separator.             }         } Before,I used the same project to execute buffer analyst,such as compute the area or query feature within the buffered feature.It works well. But now,when I select the specifed feature and past them into another form and load.But it throws exception when trying to get the 'OID' property.Is something wrong with my code?Thanks. ... View more