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--- en:offlinemaps [2021/04/05 22:26] – [Check on updates for downloaded maps] lineflyer
+++ en:offlinemaps [2022/10/20 21:19] (current) – add hillshading ztnfny
@@ Line 41: / Line 41: @@
 For this example we use "Mapsforge" as map source and want to download the offline map for Mexico.
-The top level list is usually sorted by coarse geographical regions (typically: continents) and get more specific on each lower level. Click on the magnifier icon to open the desired list/region and see its contents. If you finally found the map file you want to install, simply click on the disc icon next to it to start the download process.
+The top level list is usually sorted by coarse geographical regions (typically: continents) and get more specific on each lower level. Tap on the magnifier icon to open the desired list/region and see its contents. If you finally found the map file you want to install, simply tap on the disc icon next to it to start the download process.
 {{:en:offlinemap_downloader_1.png?direct&300 |}}{{:en:offlinemap_downloader_3.png?direct&300|}}
@@ Line 53: / Line 53: @@
 {{ :en:offlinemap_downloader_4.png?direct&400 |}}
-The download itself is performed in the background by the download manager of your device. When the transfer is complete, the file is copied to the c:geo map folder and set as current map automatically.
+The download itself is performed in the background by the download manager of your device. When the transfer is complete, the file is transfered to the c:geo map folder and set as current map automatically.
+<WRAP center round info 100%>
+Best is to keep c:geo active during the download, so that after the download is completed c:Geo can directly take over the downloaded map.
+</WRAP>
 {{:en:offlinemap_downloader_5a.png?direct&400|}}{{ :en:offlinemap_downloader_5b.png?direct&400|}}
@@ Line 75: / Line 79: @@
 The downloader will either show you, that no map update is available or list the files, which can be updated. To update the maps/themes just click the disc icon next to the file name.
-{{:en:offlinemap_downloader_update_2a.png?direct&400|}}{{:en:offlinemap_downloader_update_2.png?direct&400 |}}
+{{ :en:offlinemap_downloader_update_2a.png?direct&400 |}}
-Once the update has been downloaded you will be asked, whether you want to overwrite the existing (older) map or rename the downloaded map. Usually you may want to replace the old map, therefore you should select ''Overwrite''.
+{{ :en:offlinemap_downloader_update_2.png?direct&400 |}}
-{{ :en:offlinemap_downloader_update_3.png?direct&400 |}}
+Once the update has been downloaded you will be asked, whether you want to overwrite the existing (older) map or rename the downloaded map. Usually you may want to replace the old map, therefore you should select ''Overwrite''.
+{{ :en:offlinemap_downloader_update_3.png?direct&400 |}}
+You need to repeat the process for each map/theme you would like to update.
+===== Usage of offline maps =====
+==== Selecting map files ====
+c:geo will show all downloaded offline map files in the map selection menu on your (live) map and you can use it to change between your installed offline maps.
+{{ :en:offlinemap_map_selector_2.png?direct&400 |}}
+You can also use c:geo Menu -> Settings -> Map and tap on ''Select map source''  to select the offline map to be used.
+{{ :en:offlinemap_map_selector.png?direct&400 |}}
-===== Usage =====
-==== Selecting map files ====
-c:geo will show all downloaded offline map files in the map selection menu on your (live) map and in c:geo Menu -> Settings -> Map.
-{{:en:offlinemap_map_selector_2.jpg?direct&400|}}
-{{ :en:offlinemap_map_selector.jpg?direct&400|}}
 Once selected c:geo will continuously use this map file to render your map instead of using the online maps.
@@ Line 111: / Line 112: @@
 This can be done in the menu of the (live) map using the menu option ''Select map theme''. If you installed a theme alongside with your offline map, please make sure you select the corresponding theme here.
-{{:en:offlinemap_theme_selector.jpg?direct&400|}}
+{{ :en:offlinemap_theme_selector.jpg?direct&400 |}}
-{{ :en:offlinemap_theme_menu.jpg?direct&400|}}
@@ Line 127: / Line 127: @@
 {{ :en:offlinemap_advanced_themeoptions_2.jpg?direct&400 |}}
+==== Hillshading ====
+Hillshading is a technique for creating topographic relief maps by adding a lighting effect to the map to indicate changes in elevation. Sloped will be darkened/lightened to generate a 3D-effect.
+=== How to use hillshading in c:geo? ===
+Hillshading is available only with offline maps. To use it configure a folder containing the hilldshading definition files in "Settings > Map > Map Shading Files Folder".
+=== Where to get hillshading files? ===
+Multiple sources exist for hillshading files with different coverage and resolution. The files are required in "hgt" format and must be placed in your devices "Map Shading Files Folder".
+Most sources offer them by degree-coverage with popular sizes being 1" (1x1°, resolution of 30m) and 3" (3x3°, resolution 90m).
+Sources:
+^ URL                                                                          ^ Coverage                 ^ Resolution ^
+| https://sonny.4lima.de                                                       | Europe                   | 1", 3"     |
+| http://viewfinderpanoramas.org/dem3.html                                     | World                    | 3", 15"    |
+| http://viewfinderpanoramas.org/Coverage%20map%20viewfinderpanoramas_org1.htm | USA, Europe, New Zealand | 1"         |
+=== Hillshading and custom themes ===
+Hillshading requires support by the map theme. If you placed the files correctly but are not seeing any hillshading it might be due to your map theme. Switch to c:geos "default" map theme to see if it's working then.
+If that's the case please use another map theme or contact your map themes author to support hillshading.
 ===== Further reading on offline maps =====

c:geo User Guide

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