|USA Relief||Tech Spec||MapCatalog||Guide||Download||License|
Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas - East Texas - West Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming
USA Relief provides a set of 4 full color shaded relief maps along with one grayscale relief map. These raster maps constitute a highly detailed topographic base over which the EPS vector data features such as coastlines, rivers, interstate and major road systems, railroads, county, state and international borders, town locations, town names text, latitude and longitude grids, are overlayed. The map images in this collection have been computed from the USGS 3 arc second, gridded elevation database and generated at a scale of 100 meters per pixel - giving over 4 Gb of terrain imagery per color style for the entire USA.
Coverage & Organization
The collection includes an individual portfolio of maps for each of the 50 states within the entire continental United States and for Alaska and the islands of Hawaii. A portfolio may be sized from 20 Mb to over 200 Mb depending on the physical size of the state. The collection is grouped in contiguous state sets which ship on individually complete with HTML instructions.
Each state map varies in size - at 300 dpi, the base relief image for Indiana measuring 6,000 X 6,000 pixels produces an image 20 by 20 inches, or an umcompressed file size of 108 Mb. As a rule of thumb to calculate the image dimensions, the distance across the state in miles can be multiplied by 16 to give the approximate pixel size, or 1,200 pixels per degree of latitude or longitude - in both cases, multiply the height by the width by 3 to give the file size of the resulting image. For a full specification for each of the 50 state maps, see the detailed state map specification page which shows degree boundaries for each state, number of one degree quads used to make up the map, width and height in pixels and in inches at 300 dpi, and full bitmap image size in megabytes. Remember to double the image size for desktop or exhibition printing at 150 dpi or for screen use in multimedia or web quadruple the image dimensions - this allows small areas to be viewed.
The 5 relief maps are in high quality JPEG format and the vector overlays are provided in a layered (see layers palette to the right) and editable EPS file format, all delivered on CD-ROM. The vector maps may be edited giving clients the option to change line widths and color, font styles and colors, and allowing the placement of any of the 5 relief maps as the bottom layer. Layers themselves may be switched on or off at will and the sequence may be altered to suit any specific circumstances that you wish to portray. Detailed user instructions using Illustrator and Photoshop are given on this web site and with the USA Relief map portfolio.
The scale of the relief map images at 72 dpi is 1:280,000. At 300 dpi this would be equivalent to approximately 1:1,000,000. The base relief images are generated from 100 meter USGS DEM data presenting exactly one pixel per 100 meter of terrain.
Projection & Map units
Geographic projection; each map extends to the next nearest degree line around the state and includes a longitude / latitude grid at 1º interval on its own EPS layer.
The grayscale relief map can either be pre-colored or manipulated in Adobe Photoshop or tinted by applying a colored layer in Adobe Illustrator. Use of these maps is not limited to the applications mentioned here, but can be used with any Image Editor, Graphics or Layout software capable of opening or importing JPEG bitmap and EPS vector files.
Color and Styles
Four color relief map styles shown below are RGB 24 bits per pixel, 300 pixels per inch. The color schemes feature a low contrast (shown in full scale above), a strong high-contrast look, a natural look and a standard cartographic map elevation color scheme. In addition, one grayscale relief map is supplied in 8 bit Grayscale, 300 pixels per inch; this is provided for designers to generate color scheme to match or who wish to apply their own custom house styles to the relief maps.
Cartographic Style Natural Look Style
High-Contrast Style Low-Contrast Style
Ordering options / More Info
The USA Relief collection of 50 US states exceeds 8 GB and 400 files. Each state available separately at $19 by immediate download. The entire USA State collection is available on Flash drive and is priced at $190; separate East and West US collections are priced at $95 each. The division between East and West follows approximately the 95º line of latitude;
East DVDR: Alabama Arkansas Connecticut Delaware Florida Georgia Illinois Indiana Iowa Kentucky Louisiana Maine Maryland Massachusetts Michigan Mississippi Missouri New Hampshire New Jersey New York North Carolina Ohio Pennsylvania Rhode Island South Carolina Tennessee Vermont Virginia West Virginia Wisconsin
West DVDR: Alaska Arizona California Colorado Hawaii Idaho Kansas Minnesota Montana Nebraska Nevada New Mexico North Dakota Oklahoma Oregon South Dakota Texas - East Texas - West Utah Washington Wyoming
Click here to Request more information or click here to place an Order for USA Relief State CD's or Collection DVD's.
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