iDesktop FAQ

A: At present, only the attribute query of SuperMap software supports group query, and the spatial query does not support group query currently. The query statement for attribute query is the same as the standard sql query statement. For example, if you want to query the lowest scores of all the subjects among all students, you can use the statement as follows: SELECT table.name, table.subject, min (table.score) as minScore FROM table GROUP by table.name.

A: Firstly, check if the system PATH contains the Oracle installation path. If not, manually add it to the PATH system variable. Secondly, check whether Oracle is 32 bit if iDesktop is 32 bit. If iDekstop is 64 bit, Oracle must also be 64 bit.

A: Yes, you can achieve this purpose with the 8c version of iDesktop. You can generate the corresponding image or grid data in a planar scene with oblique photogrammetry data with the command on the 3D Analysis tab.

A: This feature is available from the 801 version on the Data tab. The image composite operation is based on the additive color composite principle. Image composite assigns the three primary colors of red, green and blue to the three bands of the remote sensing image to get a colored image. Image composite with different bands will get resulting images highlighting different types of feature.

A: 1. Use PL/SQL tool or command to export all the tables under the oracle datasource to dmp files. 2. Create the user and tablespace for the oracle datasource on the target machine. 3. Import the dmp files on the target machine. Note: The import of dmp files cannot be performed in the sqlplus window. The import should be executed on the CMD terminal.

A: 1. Create image pyramids for the raster data. 2. Enable the block drawing parameter for the raster data in the supermap.xml file in the bin folder of the installation directory of iDesktop. 

A: Currently point, line, polygon, text, CAD, and tabular datasets support the operation of appending rows. Network and rout datasets do not support the operation of appending rows now. It requires that the name and type of the appending field for the source dataset should be identical to those of the appended field for the target dataset. 

A: Currently, the CAD data only supports the Rectangular and Offset registration methods, which require two pairs of control points. To employ more control points to enhance the precision, you need to covert the CAD dataset into single datasets first, and then use batch registration to perform registration with more control points.

A: You cannot hide 3D globe directly. You can create a new dataset, draw a global region, convert the vector to a single-valued raster data, add the converted raster data to the 3D scene, and set the color table of the raster data layer to white. Then add your own image data to the top layer of the scene set it translucent.

A: Scales will be reserved in the Mapping for Scales window if you check Fixed Scales and import the required series of scales in the Map Properties window.

A: 1. delete the tables and sequences begin with sm under the current user; 2. run the statement ALTER SYSTEM CHECK DATAFILES; 3. re-create the datasource. The three steps above can solve the problem.

A: You can adjust the LOD scaling ratio in the page of the layer properties. The smaller the LOD value, the finer the display of the model data.

A: There are two ways to modify the picture and text on the splash screen during extension development. (1) Directly set GlobalParameter.SplashFilePath; (2) Replace the Logo_Desktop.gif picture in the bin folder of the installation directory. Please make sure that the new picture should have the same name and format as the original one.

A: Please set the tolerance value to 0 while constructing the network dataset.

A: You can open the attribute table of the dataset, select the rows and columns you want to export, right click and choose to export the selected rows and columns into an excel table.

A: Display the Measure Distance dialog box by clicking Proximity Analysis—Calculate Distance on the Spatial Analysis tab, set source data and neighboring data to the point data, and set the maximum distance to 100 to generate an attribute table. Each record in the attribute table stores the IDs and distance of a pair of points satisfying the condition.

A: The plot objects are stored in the CAD dataset and the styles of the plot objects are stored in the dataset itself. To modify the style of a plot object, select the object, click to display the Properties panel, modify the style including the line color, the background color, etc.

A: There is a “Loop” icon in front of the latitude and longitude information. You can switch back and forth between the two formats by clicking the icon directly.

A: There are two conditions for license lending: (1) Network file license; (2) Available user number for lending. The specific operation is as follows: click the Borrow button in the Borrow and Lend module of the license center, and follow the borrowing process to generate the borrowing file *.id of the computer, copy the file to the lending server and generate the lending certificate *h2r following the lending process. Finally, copy the generated lending certificate to the local machine and activate the license in the license center.

A: The planar coordinate system with no projection can be converted into a latitude and longitude coordinate system by the means of registration. There are two methods for registration: (1) If there is already a reference layer, open the registration tool, set the registration layer and reference layer, and then puncture the same place in the registration layer and the reference layer, select the appropriate registration method, and perform registration. (2) If you already know the latitude and longitude coordinates of some points on the registration layer, open the registration tool, set the registration layer, and leave the reference layer not specified, pick control points on the registration layer, enter the correct latitude and longitude coordinates, select the appropriate registration method, and perform registration.