Frequently Asked Questions

What is the usefulness of choosing a workspace during the installation of the software?

The choice of a 'workspace' allows the definition of the area on disk where the files of the different projects will be saved, it is also there where the preferences of the interface are saved. A different workspace will allow a different customization of the environment. Useful for example to perform trials without corrupting the working environment.

Most of the users will use only one workspace and will automatically connect to it.

At the launch of a simulation, I get the error  :
    "Unhandled Exception : System.FormatException  the format of the input string is incorrect".

It is related to decimal point definition. It means that a different symbol than a point is used as decimal point. Go to Start/Control Panel/Date, Time, Language and Regional Options/Regional and Language Options. There click the Customize tab and select the decimal point as the Decimal Symbol and another symbol for digits grouping.

How can I restore the plan (x,y) view I had before making rotations  ?

  • In order to reinitialize the basin view only, hit Escape key
  • In order to reinitialize the rotations only, hit F1 key

The map displaying the DEM (Digital Elevation Model) is lacking relief.

Go to layer properties (right click the layer title) then remove the selection "No altitude map". Notice : this problem of visualization appears when the DEM parameters are altered where no altitude map is set by default !

I could not save the modifications in an editor.

Check the "error log". If the message "guest cannot save" is found, it means there is an error in the password or in the user name.

I have a problem of software update : The message "no update available" displays despite there is one.

It is an access privileges problem to the installation folder. Make sure one has the right to write to the installation folder of Pegase and its sub-folders. Under Windows Vista, Windows 7 and Windows server 2008, if the User Account Control is configured, start the Pegase interface in administrator mode by right-clicking on Pegase icon and "Run as administrator".

I want to export the daily graphs but I no longer know how to do it.

One has to right-click on the graph and do a "save As..." to save to a png image. If one wants the buttons of the right and left parts, one should perform a "Print Screen": - click on "Daily Graph" tab and scroll it out of Pegase window - give the desired size to the window - press <ALT>-<PrtScr> (or perhaps <ImprEcr>?) - paste the image in Word or Paint - click on "Daily Graph" tab (not the window border but the tab itself!) and scroll it back to its usual place.

The properties do not display when I click on an object in the basin view because the object properties window has disappeared.

Click Window/Show View/Other (or press <ALT><SHIFT>Q then Q), open "General" tab then click "Properties"
Alternatively: right click on perspective Pegase on the upper right side of the workbench and check "Reset". All the windows will be reinitialized.

I get no curve when I display nstxx although I click on a right point.

Check that temporal curves are displayed not longitudinal ones.

When I start a simulation, It stops immediately without a message. Only the message "<Finished> Pegase [Pegase Model] Pegase Model" displayed at the top of the console.

Check Windows registry key HKLM\Software\Microsoft\Command Processor\Autorun. If it contains "Exit", suppress it (virus Win32/Autorun.worm.h or else)
Check also the key HKCU.

When I click on a second file in the project explorer, It doesn't open in my editor.

One has just to click elsewhere (editor, properties, etc.) then a double-click will open the file in its default editor.

The results are grayed out in catchment head for some rivers, why ?

There is a flag "basin head truncature" in the simulation configuration file (.pegase). It is accessible via the "General" tab, in group "Misc. Flags". When it is checked, results in river points draining less than 2 km2 and preceding a confluence are not shown on that points. (because the concentrations on that points are usually unrealistic)

The computation per water body seems incorrect. How to check it ?

The delimitation of water bodies can be checked in output file ".wbdmap" (or previously ".wbd_limits"). Every entry constitutes an adjoining part of a water body. A water body appearing many times on a given river with "holes" in its curvilinear coordinates (lx_ini and lx_fin) constitute an error in its definition.
The file ".wbdmap" could be manually modified to "glue" discontinuous water bodies together and used as an input file (to copy in dat_<dom>, modify its header and specify its extension in .pegase files in order to use it).
In order to become an input file, its header must be modified as follows:


Masse eau Type_riv iriv codusr codpeg lx_ini lx_fin bv_ini bv_fin Nom riviere x_debut x_fin y_debut y_fin


becomes:


Mapping of water bodies - Walloon Region --> "raw" usage of data
0 iwbd_unit (0 --> by pass, 1 --> total re-initialization , 2 --> partial re-initialization)
Masse eau Type_riv iriv codusr codpeg lx_ini lx_fin bv_ini bv_fin Nom riviere

where the 2 first charaters of the second line indicate if the file is ignored (0), if all is re-initialized from this file (1) or only the nodes of listbv that were not present in a water body are initialized (2). Note the disappearence of the blank line (2nd line of the output file) (cf. Pegase reference manual, § 3.4.6)

I just selected another scale or northern reference (or hide it) and still there is no change.

Some changes require a refresh of the view: hit <F5>.

The gage stations and releases layers are moving relatively to the rivers when the map is moved, why ?

Stations layers and releses layers are lacking altitude information. This is a parallax effect of a 3D projection, which amplifies with the river height.
If equivalent files are opened (releases only) in the results folder, where height has been added by Pegase, this effect disappears.

I cannot display rivers with a width other than 1 pixel.

The problem is probably related to the graphics card, whose processor is not compatible with MSAA algorithm for anti-aliasing computation. One must uncheck the option "Smooth river lines" in layer display properties. The curve will no longuer be smoothed but will display with the required width.

When starting PegOpera GUI, the screen freezes on basin view.

display the workspace location in a windows explorer. in the folder .metadata/.plugins/org.eclipse.runtime/.settings, locate or create a file named org.eclipse.ui.workbench.prefs and edit it with a text editor. The file should at least contain the following lines (order doesn't matter):

eclipse.preferences.version=1
USE_IPERSISTABLE_EDITORS=false

When restarting the GUI, the editors should not be automatically re-open. The property can be restored in the Window/Preferences form, tab General/Editors, using the check box Restore editor state on startup.