TerraViewer is a software that can easily access and display USGS maps and images from terraserver-usa.com by downloading them onto your device.
One notable feature of TerraViewer is that it is designed to work with the same data format for the foreseeable future, so there is no need to worry about compatibility issues with later versions. Additionally, the software has a list of ideas for implementation that could make it even more functional in the future.
Using TerraViewer is simple and straightforward. When users launch the program for the first time, they will be prompted to allow the creation of a data directory called "images" within the same folder where the program is installed. Without this directory, TerraViewer cannot be used. Users must answer "Yes" to this prompt to proceed.
By default, the program displays 1 meter images, and users can press 'F' to fill the screen if they have an active internet connection. As the program downloads the images, the progress is displayed in a download program dialog. A maximum of 12 images are downloaded at once, and the remaining requests are held in a queue.
Users can move around the images using the cursor keys, zoom in/out using the Page Up and Page Down keys, or use the slider at the bottom of the screen. As the user changes the zoom level, the program may need to download additional images.
TerraViewer also offers the ability to switch between photos and maps and allows users to go to a specific latitude and longitude using the Goto->Lat/Lon feature. However, there is no sanity check at this time, so be aware that entering strange locations could prevent the program from downloading the intended images.
Overall, TerraViewer is an excellent program for anyone who needs access to USGS maps and photos. Its user-friendly interface and convenient features make it a valuable tool for anyone who works with this type of data.
Version 0.01a: N/A