Možné operace v OziExploreruCE



Co je pro OziExplorerCE mapa?

Mapa je pro OziExplorerCE obrázek, který má jakýkoli bod kalibrovaný (georeference) tak, že každý z těchto bodů může být používán jako pravdivá zeměpisná souřadnice.

Tato verze OziExplorerCE NEUMÍ kalibrovat mapy, musíte to proto udělat na svém stolním PC s plnou verzí OziExplorer. (Zkušební verzi nedělá kalibraci na dobré úrovni, neboť používá jenom 2 body). Výsledkem kalibrace jsou *.map soubory, obsahující kalibrační údaje a napojení na obrázek, který chcete používat jako mapu. (POZOR - stolní OziExplorer může používat i obrazové formáty map, které vám na OziExplorerCE nebudou pracovat! Je proto dobré se nejdřívě seznámit s tím, že pro tuto verzi musíte mít mapy ve formátu OZFx. nebo ECW (OZF2, OZF3, ECW)).

Map soubor obsahuje tyto informace:

  • propojení (link) na obrázek, ke kterému patří kalibrační údaje
  • datum (souřadnicový systém), ve kterém je mapa kalibrována
  • mapová projekce, použitá pro tuto mapu
  • kalibrační (georeferenční) informace pro tuto mapu

MAP_file

 

Pro použití je nejlepší, pokud se název mapy (obrázku) shoduje s názvem MAP souboru a liší se pouze koncovkou. (Není to však bezpodmínečně nutné).

OziExplorerCE potom z MAP souboru přečte a vykoná:

  • jméno mapového souboru (obrázku) a otevře ho
  • načte si souřadný systém a mapovou projekci
  • načte kalibrační údaje a vypočítá si nezbytné údaje k tomu, aby mohl přepočítávat polohu jednotlivých obrazových bodů do zeměpisných souřadnic

"Mapu" pro OziExplorer tedy tvoří dva soubory:

  1. MAP - obsahující kalibrační údaje
  2. Obrázek ve formátu (.ozf2, .ozfx3 nebo .ecw) jako mapový podklad

Nezapomeňte, že mapy pro použití v PDA musí být v jednom ze 3 uvedených formátů - ozf2, ozfx3 neboecw. Jestliže máte mapu v jiném formátu (nejčastěji GIF nebo JPG), musíte použít převodní program Img2Ozf, dosažitelný ze stránek www.oziexplorer.com. (Obecně doporučuji do formátu OZFx převést všechny mapy, protože stolní verze umí pracovat se všemi formáty a neusíte na to později - při použití map v PDA - myslet).

 


Otevření map

Použijte menu " File" nebo příslušnou nástrojovou lištu.

Maps (the .map file) must be created in the full OziExplorer on a PC and then copied to the CE device, OziExplorerCE does not have the capability to create maps.

Select a map to load from the list in the Open Map File dialog. (You can navigate through the folders on your system to find a map path.)  

 


How a Map Image is Located

When a .map file is opened OziExplorerCE searches for map images in this order.

The map image name is read from the .map file and the path and file extension removed.

The .ozf2, .ozfx3 and .ecw extensions are added to the file name to search for maps in any of these formats.

  • The Image File Path 1 is searched for the name.
  • If not found Image File path 2 is searched.

If not found

  • The path where the .map file was loaded from is searched.

If not found then the name of the map file name is used for the image name and the above process repeated.

If all this searching fails the message "Image File not Found" will be displayed.

 


Index Files for Faster Map Searching

For faster map searching, the map files are indexed and the indexes are stored in the "System Files" folder attached to the main "OziExplorer" folder.

These index files are created the first time a map search is initiated. The time it takes to create the indexes for the first time will vary depending on the number of map files in each of the active Map File Paths (see Configuration / Map & Data Files).

The indexes are used to find maps when -

  • looking for a map during moving map operation if the "More Detailed Map" option is turned on
  • using the Map Menu or Screen Control options
    • Find Maps at Cursor
    • More Detailed Map
    • Less Detailed Map

 


Scrolling the map - There are 3 ways to scroll the map.

  1. Tapping the screen with the finger or stylus moves the point you tap to the center of the screen. Tapping near the edge of the screen scrolls quicker than tapping near the center.
  2. Moving the stylus across the map will drag the map. If "Drag Object" is selected, do not press on an object at the start of the drag motion or the object will be moved.
  3. Using the arrow or cursor keys if available.

You cannot scroll when -

  • the screen control is activated.
  • or in moving map (real time tracking) mode if the Track GPS Position option is ON.  The map can be scrolled during moving map operation by turning OFF the Track GPS Position option on the System Toolbar.

 


Full Screen Mode

Use the option on the System Toolbar to switch between full screen mode and normal mode.  This option only works on Pocket PC's

 


Map Objects, Popup Information and Menu

Popup Information - Press and hold the stylus on the map or any map object (waypoint, route waypoint or active track point) until a red circle appears (approximately 0.5 seconds), release the stylus to show a window with information about the map or map object. (The circle color may change depending on the underlying map color.)

The window will display for 10 seconds, to hide it immediately tap the stylus on the window.

Popup Menu - Press and hold the stylus on the map or any map object (waypoint, route waypoint or active track point) for at least 1 second to show a popup menu with several menu options. The map popup menu has zoom selections, Full Map or 100% Zoom. Map Object popup menus are different for each object type.

 


GPS Info Status line - Shows the position coordinate on the left and NMEA status and activity on the right.

  • "ON" indicates communication is turned on.
  • "NF" (white text on red)  indicates communication is turned on but the GPS has reported it does not have a good fix - however it may still be reporting a position.
  • " * " will toggle on and off as NMEA sentences are processed.
  • " L " will appear when a track point is logged to disk.
  • " T " will appear when a track point is logged to the screen.
  • "Busy" (white text on blue or green) indicates the software has not finished processing the previous NMEA sentence and a new one has arrived, the new sentence is not processed.

The GPS Fix data (0-no fix, G-GPS fix, D-DGPS fix + number of satellites being tracked) + the DGPS last update time are also displayed on the status line.

 


Moving Map (Real Time Tracking)

For Moving Map operation you need a GPS which can output the NMEA sentence $GPRMC, $GPGGA, $GPGLL, the $GPVTG sentence is also use to obtain additional information if required.

You need to configure OziCE and select the sentence type your GPS outputs, if your GPS outputs $GPRMC always select this one as it contains most information, the next best is $GPGGA and then $GPGLL.

Select the highest baud rate you can for communication, make sure OziCE and the GPS are both using the same baud rate.

Compared to PC's CE devices are very slow and they cannot refresh the screen, draw the track and waypoints, check for proximity waypoints etc etc etc in the time between the NMEA sentences, when this happens they start missing characters arriving from the GPS and scrambling the information, I have not found anyway to protect against this in code. When this happens bad data is collected and incorrect positions are calculated usually resulting in the track shooting off the map into oblivion. The other symptom is the NMEA positions will lag behind your true position.

To protect against this you need to :

1. Increase the time between screen updates to 2 or 3 or more, position data is still collected, speed is still updated on screen, proximity waypoints are still checked but the screen is only refreshed each update interval. This is the BEST and preferred method to prevent these problems.

2. Have "Use Chk Sum" (Use Check Sum for NMEA sentences) turned on in NMEA (GPS) configuration. The checksum will be calculated and compared to the checksum in the sentence, if they do not agree the sentence will be rejected. This prevents bad data from being processed but does not prevent the NMEA position from lagging behind you actual position.

3. Keep the Track Tail length set up in configuration very short, there is a limit of 1000 points but even 100 may cause problems. Turn the screen track off if necessary.

4. Keep the Track Width as narrow as possible, no more than 2 pixels.

5. Have the Screen Track Logging interval set to a reasonably high number so fewer track points are collected for on screen display, this has the advantage that a shorter track tail can be used. The logging of track points to disk is independent of this.

Changing maps - A new map will be searched for when the neat line (corner markers) are crossed. The most detailed map will be selected. If activated in configuration a more detailed map will be searched for every 90 seconds regardless of current position on the map. The maps are searched for in the Active Map File paths only (marked as active in configuration). This allows you to separate you maps into different categories, I keep my touring maps separate from my marine maps etc.

Starting Moving Map - Select the Connect to GPS option on the Map menu or press the button on the Toolbar.

Track GPS Position - The Track GPS Position option on the System Toolbar will turn GPS Tracking on and off. When tracking is turned on the map will be automatically centered. When turned off, the gps is still connected but will not automatically center the map, so the map can be dragged to view other sections of the map.

 


Finding Maps

Selecting the Find Map at Cursor option on the Map menu will scan the folder where the current Map was loaded from and the active Map File Paths and find all the maps which will have the current cursor position contained within them.

A map in the list can be opened -

  • by double clicking on it (Map Find dialog will remain), this allows additional maps to be viewed quickly if desired.
  • or highlighting it and pressing the OK button (dialog will disappear)

 


Map Scale

Selecting the Scale option on the View menu will display a scale bar on the map. The number shown on the bar is the distance covered by each segment of the bar (in other words the number represents the distance covered by the white segment, all segments are the same size.

The scale bar can be dragged by clicking on it and then dragging the caption, click on the bar again to hide the caption. The scale bar cannot be rotated.

 


Map Zoom

The map can be zoomed by clicking on the magnifying glass buttons on the toolbar or selecting a zoom option on the view menu. Configure the zoom levels above 40% you require in File / Configuration / General Settings / System menu. Zoom levels below 40% are always available.

The Full Zoom option means a zoom level will be chosen for the map so it just roughly fills the screen, the zoom level chosen automatically must be one of those in the zoom list so the map may just exceed the screen size or be smaller than but it will be close.

The Full Zoom option is so useful it is also available on the Toolbar as a button and on the popup menu which can be activated by pressing and holding on the map, the 100% zoom level is also available so you can quickly return to normal zoom.  The Full zoom can be used a little like MapView.

Please Note - Infinite zoom levels will not be made available (technical reasons), zooming by dragging on the map is not available.

 


Map View

The map view window displays the full map. 

  • Clicking on the Map View map will scroll the main map to the same position.
  • Click on the colored border around the map to display a list of the available maps at that position.
  • Use the + / - buttons on the MapView window to change the size of the Map View window.
  • Use the button with the red dot to turn On/Off the display of Waypoints, Map Features and Map Comments.

 


Replay Track

To replay a track select the "Replay Track" option on the File / Track menu option. Load the track you want to replay. Select the "Moving map (GPS)" option on the map menu or press the Start GPS button on the toolbar. The track will be replayed using the same configuration settings used for normal moving map operations. To cancel track replay mode you must select the "Replay Track" menu option again.

The CE track replay option can use track files produced by the full OziExplorer.

 


Navigation

Navigation can be set up by -

  • select a waypoint in the Waypoint List and click the GoTo button.
  • create and/or load a route and turn on navigation along the route. Note: this is not auto-routing, you must define the route manually.  See the "Working with Routes" section for details.
  • select a location in the Name Search dialog and click the Gt button.

Navigation information can be displayed on a status bar. It can be turned on or off by an option on the View Menu.

 


Speed Monitor

The speed monitor will play wav files when the speed thresholds are crossed. If the wav files are not found the standard beeps are used.

  • Min Speed - The minspeed.wav file is played when the speed goes below the specified min speed. The sound will not play again until you go above the set speed and then below the min speed again.
  • Set Speed - The setspeed.wav file is played when your speed goes above the specified set speed.
  • Max Speed - The maxspeed.wav file is played when your speed goes above the specified max speed.

The speeds can be activated independently by ticking the active check boxes.


 

Link: Toulky, wendabr, ailcik, navigace, OziExplorer, OziExplorerCE, Des Newman, Make Next Track Active, Add a Track Point , Insert a Track Point, Delete Track, Display the Track List, Load a Track, Save a Track, doporučení pro instalaci

(c) srpen - září 2008 TOULKY team - Brno Medlánky