• Base Layer Map: With the top selection-wheel you can select the Base layer map.
• Transparent Layer Map: With the second selection-wheel you can select the Transparent layer map. A transparent layer is optional. If a transparent layer is selected, a slider appears on the top left. You can adjust the opacity of this layer with the slider.
• Show Scale: Toggles on and off the scale, which is in the bottom left of the screen. The scale will be in units of km and miles, or meters and feet.
• Show GPS: Your present latitude and longitude will be marked with a blue spot.
• Track GPS: The GPS marker will be in the center of the screen. It is updated periodically as you travel.
• Use Cache: By selecting this, you can use map cached on your device, and so use maps when off-line. See Create Cache and "Manage Sources/Cache" below.
• create cache: Start "Create Cache". see below.
• manage sources: Add or remove online source to the selection-wheels. Also Manage caches for off-line use.
• refresh: Occasionally servers are slow in sending map tiles. This refreshes the screen. Right after taping "refresh" you are given the option of a "major reset". This was clear your position and memory and refresh all the tiles in a default, whole Earth view. The button will revert to "refresh in a few seconds".

• draw path or circle area panel will appear at the bottom.
  • If you circle an area, the maps within the circle and under the circle will be marked for the cache.
  • If you draw a path, maps along that path and near that path will be marked for the cache.
  • Tap "cancel" or "continue" when you are done.
• FetchMap will calculate which maps to retrieve. While it calculates, the green status bar will grow.
• When it is done, the selection wheel will be filled with information.
• At the stage you select how much resolution in your cache. Great resolution means a lot of memory.
• The selection wheel gives you information to help your decision
  • selection level
  • number of tiles in that level
  • approximate size of cache for that selection
  • resolution - one pixel represent what distance on Earth
  • symbol, indicating that this level is useful for different types of travel.
• Note: When you select a level, maps at that level AND all larger levels (lower level number) will be part of your cache. From a cache you can always zoom out the the whole Earth.
• Name you cache This name will appear for future selections.
• cancel or continue If you continue, FetchMap will request maps for the map server and cache them on your device. The red status bar tells you about progress. When it is done, this panel with vanish.

draw path or circle area

sample circles area

sample path

create cache panel

• Once the "manage sources" panel has opened, make sure the middle switch is set to "online" (left). The title of the panel will reflect this setting. From here you can chose which maps show up on the "base map" and "transparent map" selector wheel on the main control panel.
• There are about 50 different maps listed on the manage source selector. These have been grouped to help you find the right map.
• When you select a map source, the "base" and "trans" switches tell you if they appear on one of the control panel's selector wheels.
• Maps may appear on zero, one or both wheels.
• The "restore" button reverts all the maps to their default settings.

manage sources: online

• Once the "manage sources" panel has opened, make sure the middle switch is set to "cache" (right). The title of the panel will reflect this setting.
• On the selector wheel you can choose which cache you will manage.
• The wheel also give you information about that cache
  • name of cache
  • level of detail of cache
  • size of cache in your devices
  • number of map tiles
• Once you have selected a cache you can choose to have it appear on one of the selectors of the main control panel. Note: they will only appear when the "use cache" switch on the main control panel is set on.
• show button will re-center your view on the cached region, and outline the cached area.
• delete removes the cached maps from your device.

manage sources: cache

show cached area

• To use a cache, set the "Use Cache" switch on the main control panel.
• Select your cache from the selection wheels.
• You can zoom into the level you selected when creating the cache.
• You can zoom out to a whole Earth view.
• You can pan (finger swipe) like usual. You may get to a white region. This is the edge of the cached maps at that level.

manage sources: cached cached map

• Some map servers require additional information. If you select one of these sources a box appears under the selector wheel.
• In the box, in grey is an example of the type of data you may enter.
• Example: if you select "NASA by Date", the box will appear with "ex. 2012-12-25", which means fill in the date in the format yyyy-mm-dd.
• Example: if you select "NY Public Library", the box will appear with "ex. 12602"
• Note: maps from archives are often scans, so only make sense are a certain resolution and centering. For instance the NYPL map 27272 is of Brooklyn. So if you are viewing a different part of the world, or a zoom level much big then Brooklyn you may not see what you expect.

"NASA by Date" requires more data
(Hurricane Sandy)

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