Web Supermap Series products as a platform for GIS development, more in line with the Chinese customs, the operation is more convenient, they have done a period of time, feeling a bit depressed, may wish to write down some experience.
Supermap Deskpro Some of the words of cartography:
Workspace: WorkSpace, in fact, is to focus on a number of map datasets, and on this basis for the map production, map analysis of the environment. In is.net, configuring a mapserver actually corresponds to a working space. And because at present in the Is.net Supermap temporarily does not support the MapServer to switch, therefore the multiple map's case best will all they sit in a work space, in order to facilitate the map the switching.
Map data set: 1. It is important to have some conversion problems because we are generally buying a map dataset. In the integration of the map may have a coordinate system problem, this time if the coordinate registration, you need to know the original coordinate system and the target coordinate system. This can be converted in the properties of the map dataset. 2. The dataset also has a problem with attribute data, which is the map's own data table associated with geo-information. These attribute data will play a very important role in the map query, the simple data can be added in the data table, the querylayer-in the is.net can be set up in the Queryparam returnvalue the corresponding data will be taken out.
Map: The map itself is not difficult, difficult is based on the data set to make a beautiful professional map, this is mainly through the style settings and thematic map settings to achieve. The style setting should pay attention to the point line surface color collocation, the line thickness, the text collocation, the maximum minimum scale and so on. The proposal is to refer to the professional electronic map for style setting.
Other useful winter and winter:
1. Map clipping, sometimes we only need a part of the current map, you can use the map crop, select the cropped layer, store the new data set location, a new map named, you will be cut after the map to obtain.
2. About SMW and Sxw, workspace can store files as SMW and Sxw files, Sxw can be opened directly with WordPad, you can see the code that adheres to the XML standard inside, you can add anything in the visual environment, you can also see the organization structure of the workspace. This is very handy in concentrating the maps of multiple workspaces into a single workspace, and you just have to align the <sml:Maps><sml:Map>.........</sml:Map></sml:Maps> A map copy over, set the location name of the dataset, in the Save SMW file, pour into the symbol library on it. This will save a lot of style-setting effort. At the present Supermap is. NET does not yet support multiple mapserver, this is useful.
Supermap is. NET of some experience
Personally feel that the simple Webgis is not outside the basic map of the operation, based on the map query positioning, query map elements of the attributes (including the connection to the database query related information), thematic map production and interaction.
Map Basic Operation Supermap provides very good control support. The key to a query is how to obtain geographic information. This can be implemented by the Queryparam class by setting Queryparam querylayer query layer, returnfields return field, whereclause query condition. The query result is a resultset, a recordset collection that can get property data.
To be Continued ...
