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Old tricks for creating large maps


Remark: Many map viewers can be enlarged by the following trick:
  1. Enter the link to your map in your favorite map viewer:
  2. Choose the desired size of map viewer (in pixels): (width) x (height)
  3. Click button

Method 1: Awesome Screenshot

A convenient way to take a screenshot of a large webpage is to use extension Awesome screenshot in browser Google Chrome.
With this extension, one can take a screenshot of the content of a page of arbitrary dimensions (Awesome screenshot scrolls the page and assembles the screenshots automatically).
Awesome screenshot allows to crop the image before saving it. This is useful to remove unwanted white margins, if needed. Awesome screenshot might crash occasionnaly. After a crash, select "Windows->Extensions" in Chrome and re-activate Awesome Screenshot. This extension seems to work best when the window size is small (irrespective of the map viewer size).
Once you have the map image, transfer it into Multiplans to use it in the field!

Method 2: DownThemAll!

The maps displayed in many mapping sites are made up with small tiles that form the map once assembled together. It is relatively easy to download these maps and to import them in Multiplans, as explained below with the example of the OpenStreetMap website (this method works also with many other map sites). The method requires to use browser Firefox, in which you need to install the extension DownThemAll.
  1. Open the map in Firefox (eg MapQuest )
  2. Choose "DownThemAll! ..." in the "Tools" menu. In the window, select tab "Pictures and embedded objects"
    In "Renaming mask", choose "*subdirs*\*name*.*Ext*"
  3. Mark in the list the images that will be downloaded.
    For this,
    • Select the entire list (command + A), then right-click and choose "Uncheck the selected options".
    • Select the right items in the list (here addresses beginning with "otileX.mqcdn.com"), then choose "Check the selected options".
  4. Click button "Start!".
    All tiles are then downloaded (see screenshot showing the contents of the created folder "tiles").
  5. Select the folder labeled with the zoom level (here folder "8"), and compress it into a zip archive.
    Rename the zip archive with a name ending in "-tiledES.zip", eg "map-tiledES.zip".
  6. Import this archive in Multiplans.
Note: The letters "ES" in "-tiledES.zip" correspond to the order in which the tiles are arranged in folders, here the order "East then South."
For a swiss map, the order is usually "South then East", and you have to use the extension "-tiledSE.zip".

In the case of a Google map, the tiles are not distributed in several folders, but have names with coordinates "X = ...& Y = ... ". Save these tiles in a zip archive and rename the archive with a name ending in "-tiledXY.zip".

Your map can now be used in Multiplans!

Note that Google maps imported in this way in Multiplans are calibrated automatically and can thus be used straight away. For other maps, you will need to define two calibrations points to have GPS localization enabled on the map.

Method 3: SnapToMap (windows program)

Program SnapToMap automates the assembly of screen captures to create large maps. This program, which is compatible with many map websites, is quite easy to use.
Download: see link given in this discussion (in french) on forum gpspassion.
How to use SnapToMap:
  1. Fill-in box (1) with any name for the map
  2. Fill-in box (2) with the name of the website serving the map (See menu Fichier->Charger STM... for some adresses of websites). Click on button [=>] to open a web browser (Firefox) on that address.
  3. Fill-in box (3) by clicking on button [L] and then on the name of the map window in Firefox.
  4. Click on button [GR] to define (with the mouse) the region of the window that should be captured (4).
  5. Choose the number of screen capture to assemble (for example a grid of 5 x 8 screen captures)
  6. Click on button "Démarrer" (=Start)
For some websites, SnapToMap can also write a calibration file in the OziExplorer .MAP file format (see help of SnapToMap for more explanations).