1-Downloading forecast data
To download the latest available forecasts, right-click with the mouse the "My forecasts" button and select the type of forecast data you want to download.
The free forecasts are always available. For the subscription forecasts you must have a valid subscription available from boutique.nasca.fr. For high definition forecasts, you must have valid download tokens, also available at boutique.nasca.fr.
The downloading process is managed automatically. The displayed window allows you to follow the download progress but no action from you is required.
Once the download has been completed, the program automatically decompresses the data files.
If any new updates are available, the program manages the downloads automatically. If there are no new updates available the program will automatically terminate the downloading process.
In the section labeled "My forecasts" you will find the zones for which downloaded forecasts have been collected. Each forecast is identifiable by its time and date. This time and date represent the time at which the forecasts were calculated. Under each forecast time and date you will find the list of parameters available for display. By default the first parameter in the list is automatically displayed on the map, but you can select any parameter for display simply by clicking on it in the list.
The forecast data were calculated at the time and date indicated for each forecast file. Free forecasts are calculated for a period of 7 days and for every 3 hours. Subscription and high definition forecasts are calculated for a period of 4 days and for every hour. The first hour of forecast data represents the hour at which the data were calculated.
The slider bar at the top of the map window allows you choose the day and hour of the displayed forecast data from the 4 or 7 days available in the downloaded forecast file.
By clicking on the "Text" button to the right of the time slider bar you can choose the day and time of the displayed forecast data using a text tool instead of the graphic slider bar.
Given that the forecast data are calculated at differing hours of the day, the first and last days of the forecasts do not necessarily contain 24 hours. The first day contains the number of hours remaining after the time of the forecast data calculations. The last day contains the number of hours preceding the calculation of the forecast data on the first day. In other words, the addition of the number of hours in the first and last days of the forecast period will equal 24 hours.
WARNING! The displayed times are in either LOCAL TIME or UNIVERSAL TIME, depending on YOUR choice in the display parameters. The program indicates which time display is currently active next to each time used in the forecasts.
To modify the current time display parameter, go to "Configuration" on the main eNav-Viewer window and select "Hour type". The program uses the time configuration of your computer in order to calculate local time.
The choice of pointers located to the upper right of the eNav-Viewer window allows you to do the following:
Display the forecast data for one point
Display the tides for one point: NOT AVAILABLE in the free version
Zoom to an overview of the currently displayed forecast data
You must have a connection to the Internet in order for the program to download the necessary files for proper functioning. Once the files have been downloaded, it is no longer necessary to be connected to the Internet for the program to function.
The parameter "Internet connection" in "Configuration" allows you to test your connection to the Internet.
The button "Check now..." will test the connection to the Internet. If at the end of the test you see "OK", your Internet connection is operational. If you see "FAILED", your Internet connection is not operational or your firewall is blocking access to the Internet for the eNav-Viewer program.
If this is the case, you must modify your firewall parameters to allow Internet access for eNav-Viewer.