Google earth doesn’t stores up the maps data in the cache and it is also not accurately predictable or dependable. If you are moving in a remote area you must have a static topo map which must be loaded in your phone, where you can access it anytime until your phone battery goes down.
It has got solid, but not messy, sets of mapping aspects that is based on the US geological Survey topo maps. It will be showing up contour lines to indicate the mountains and canyons, roads, lakes, river and also forests. They generally have a scale of 1:24,000. They wise thing about the USGS maps is that they are offering the consistent coverage of the U.S. country. I don’t think they don’t require any license to use, which means that the iphone application developers can take these maps and then they scan it to a higher resolution and then integrating it with the GPS locations and build app for the iPhone.
The disadvantage of top maps is that most of these maps may be decades old, created and last updated in the year 1980s. Apparently the trails, roads and waterways might be changed after 35 years or so.
In few cases, for instance, Global Positioning focused a company that makes the committed outdoor Global Positioning devices have the access over the high quality maps than what you will be getting out of the USGS Topo maps.
So if you have an iPhone and $7.99, Topo maps will be working astoundingly very well for you.
Topo maps had also developed to add up the way points which you can add up to your maps and also it permits you to search thro’ internet and download the waypoint files. Map setting controls allows you to decide the slope shading so that you can easily duplicate the sun’s position and also you can set up the height shading so that the highest peaks looks brown.
For instance on a topo map by knowing the distances between the two counter lines you can find out the distances, but it can be a time consuming one. A button called distance button will be generating the concentric circles to show up the distances in KM, miles and also in feet.
Topo map has a feature called visibility mode which computes what you will be doing it as theoretical see from the location on the map. If you are choosing a position very deep in a canyon, you will be having the visibility down to the end of the feet. If you are choosing a mountain’s top the visibility will be shoots out to miles — and the deep spaces present in the canyons will be remained out of sight. Topomapsapp.com has a start up guide which will give you the detailed information about the topo maps.
One final thing: Topo maps working on iPhone 4 and it is not working cent percent. This is because the iphone 4 has high resolution screen, when you are zooming far into the map, it will be showing you the 4-tiles duplicated view of an area. If you zoom out to a larger extent the view will be returning back to the normal view. The developer said that he is working on it for an update.
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