Data Preparation

Map Theme: Tourism Map for Sichun Province. The map contains main places of interest, main transportations, e.g. railway, express way, etc. Also the hotels and gas stations will be displayed at large scales.

The vector datasets include: places of interest, hotels, gas station, railways, express ways, administrative region datasets, and the Province_R data in the China400 datasource.

First, import the *.shp files you need. Then check the projection of each dataset. Conversion will be required if they have different projections. Dissolve will be used to merge line datasets that have many very small line segments.

Basic Steps

Import Data

1. Open the application. And then create a new datasource: travel_udb.
2. Click Start > Data Processing group > Import Data to open the dialog box Import Data. Click on the Add button in the tool bar,then specifying the shp data you want to import.
3. Check the Import Attributes option and click Import.

Projection Transformation: When datasets have different projection, you can use this feature to show them properly in the same map window.

1. In the workspace manager, right click on any dataset and select Properties to open the dialog box Properties where you can view the coordinate system of each dataset.
2. The point dataset of tourist places uses Beijing1954, while other datasets adopts WGS1984. You need to perform the feature Projection Transformation to transform tourist place data to display all data properly.
3. Click the Projection Transformation button. In the displayed dialog box, click Set Target Projection and set the target projection to WGS_1984. Click Apply.
4. In the Transform Projection dialog box, set Method to Coordinate Frame(7-para) in the Basic Parameters area. Click OK to complete the transformation.

Data Dissolve: The line datasets like a street dataset have a lot of lines having the same name, which will affect the representation of the map. Therefore, you can use Dissolve to merge the lines with the same street name and overlap ends. We introduce the detail operations below on the usage of the feature Dissolve below.

1. Click Data > Data Processing Gallery > Dissolve to open the dialog box Dissolve Dataset.
2. Set Datasource to travel and Dataset to NationalHighway_polyline. Check Name as the Merged Field. The application will merge the lines having the same name and overlap ends to one line.
3. Set Merge Pattern to Dissolve. If you check the option “Process objects which have no field values” the application merges all the objects which have no field values within the dissolve tolerance into one object.
4. Enter the result dataset name and click OK to perform the operation.