{{  :manual:user_guide:ic_map_overlay_alt.png?nolink&}}

====== Map Overlays ======

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===== About =====

  * <wrap box>Menu > More functions > Map Overlays</wrap>

This feature enables laying **two maps over each other**  in semi-transparent mode so that it is possible to compare their details, coverage, accuracy etc. or two maps can complement each other.

===== 1. Select your base map =====

Choose from your [[:manual:user_guide:maps_mmanager|Map manager]]:

  * //Online maps//  - all
  * //Offline maps//  - vector maps (.MAP format), MBT, GEMF and some SQLite databases (Orux SQLite and other formats are not supported)
===== 2. Select your overlay map =====

  * Start the feature in //Menu > More functions > Map Overlays//.
  * Switch it on.
  * Select the overlay map - online or offline - the same formats as for the base map are supported. \\ {{  :manual:user_guide:maps_tools:overlay.png?nolink&  }}

===== 3. Set visibility and blend mode =====

  * Adjust //visibility//  with the //slider//  from opaque to transparent.
  * //Blend mode//  of the two maps is disabled by default. If necessary, select one from the menu - try which one suits you the best. Here are a few examples:\\ {{ :manual:user_guide:maps_tools:blend_modes.png?nolink&350 |}}\\ [[http://ssp.impulsetrain.com/porterduff.html|More about blend modes used in Locus map >>]]\\ 
  * Close the dialog.

{{  :manual:user_guide:maps_tools:overlay1.png?nolink&  }}If you want to **switch the function off**, switch it off (or tap //Remove//) in the **Overlay settings dialog**  and close the window.

===== Example =====

LoMaps center of Prague with and without satellite image map overlay:

{{  :manual:user_guide:maps_tools:overlay2.png  }}

{{  :manual:user_guide:maps_tools:overlay3.png  }}