This module returns the exact GPS locations of weather stations within a given area specified by two latitudes and two longitudes. It is designed to read the file of Meteorological Station Location Information and display the stations on the world map. The station location information is a part of the METARS (a representation of the current weather situation provided by the National Weather Service for Aviation in USA.)
| Name | Type | Description | UI Control |
| Filename | string | The filename of the station location file. | FileDialog |
| StartLatitude | double | The start latitude of the station location. | UIdial |
| StartLongitude | double | The start longitude of the station location. | UIdial |
| EndLatitude | double | The end latitude of the station location. | UIdial |
| EndLongitude | double | The end longitude of the station location. | UIdial |
| Name | Type | Description | |
| StationLocation | Mesh+Data | output mesh data of the location of stations. | |
| StationID | string | output string array of the ID(Name) of stations. | |
ReadStations is used to read station location information from the ASCII data file. The data file can be downloaded from Station location information page in National Weather Service Website(USA). After the user specifies a area in the world map defined by the longitude and latitude, the module outputs a mesh data for the coordinates of the stations within this area, station ID and the number of stations. With the assistance of two GIS modules: GISWorldDataBank and GISMapTransform, all the station ID strings display on the world map.
The macro includes a user interface. The specified area can be controlled from the four UIDials in the user interface panel.
StartLatitude; StartLongitude
The upper left corner of the specified rectangle area.
EndLatitude; EndLongitude
The down right corner of the specified rectangle area.
StationLocation
The coordinates of the stations. It contains only the mesh data and it does not contains any node data.
StationID
The string array of the station ID. Each ID contain four letters.
The User Macro ReadStations makes use of the Functional Macro ReadStatFunc and the UI Macro ReadStatUI.
An example application ReadStat_Eg is provided, which uses an ASCII data file, to display all selected stations on the world sphere map.
iac_proj/rd_stat/rdst_mods.v contains the V definitions of the ReadStatParams parameter block and the read_Stations module.
iac_proj/rd_stat/rdst_macs.v contains the V definitions of the ReadStatFunc Functional Macro, the ReadStatUI User Interface Macro, and the ReadStations User Macro.
iac_proj/rd_stat/rdst_apps.v contains the V definition of the example application ReadStat_Eg.
This project include the ASCII data file for station location information. However, the lastest version can be downloaded from Station location information page in National Weather Service Website(USA). The format of this data file can be also checked in the download page.
anonymous
MA YingLiang Manchester Visualization Centre
International AVS Centre Manchester Visualization Centre Manchester Computing University of Manchester Oxford Road Manchester United Kingdom M13 9PL