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Tr an sparen c y Bu tton- Click on button. Below the map a
dropdown will appear. Select the layer for transparency. Adjust the
slide bar tothe desired percent transparency. Click Apply
Transparency. The map will refresh with the layer transparent at
the adjusted transparency.This allows the user to see other
reference layers overlaying each other.
S e l ec t P r o du c t t o D o w nl o a d
1. Once the area of interest is decided, the next step is to
selectthe pr odu c t (s)to download.
2. On the right side, click the Down load Tab. Click on the
arrow next the desiredcategory. A list will display of available pr
odu c ts. Click the b o x b e s i d e t h eproduct.This will flag
the system that Nation al Elevation Dataset (NED) 1a r c s e c on d
d a t awill be downloaded.
T o o ls t o D e f in e A r e a
1. Downloadtools are used to mark the area of interest and
submit the information to the system to extract.
2. The f i r st b u t to n i s S e l e c t B y R e c ta n g le.
Click the button. There is a limit to the size of area that can be
downloaded at a time. The type ofproduct and the more products
selected, the smaller the area that can be selected. The limit is
reached when the outline box turnsred. A messagewill display that
the limit has been reached and to redefine the area. Below are two
examples of size limits of products:
E xa mp le Illustra tingN E D 1 a r c s e c o n d M a x im u m S
i z e
E xa mp le Illustra tingH i g h R e s o lu t i o n O r t h oi m
a g e ry
M a x i m um S i z e
(Green box around the state of Kansas) (Green box around
Washington DC area)
3. The s e c o nd b u t to n i s S i n gl e F e a tu r e T e mp
l a t e. Click the button. Below the map a dropdown will appear.
Select th e desir ed template,may need to zoom in depending on the
template selected. U s i ng t h e m o u s e, c l i ck o n t h e a r
e a o f i n t e r e st. This will clip the area using theselected
template. The the processing page will start.
4. The t h i r d b u t t o n i s M u l ti p l e F e a t u r e T
e mp l a te. Click the button. Below the map a dropdown will
appear. Select th e desir ed template,may need to zoom in depending
on the template selected. U s i ng t h e m o u s e, c l i ck t h e
a r e a s o f i n t er e st. More than one area may be
selected.Clic k Su bmit. This will clip the areas using the
selected template. The the processing page will start.
5. The f o u rt h b u t to n i s D e f in e A r e a B y C o o rd
i n at e s. Click the button. A popup will appear. E n t e r c o o
r d in a t es a n d c l i c k O K, then theprocessing page will
start.
6. The processing page will compile the area and product
selected, as well as calculate a size estimate for downloading.
Once the processing pageis complete, the T h e N a t i o n a l M a
p Seamless Ser ver Requ est Su mmar ypage will display the
results.
T h e N a t i o n a l M a p Seamless Ser ver Requ est Su mmar y
Page
1. T h e N a t i o n a l M a p Seamless Ser ver Requ est Su mmar
ypage contains:
L i s t o f p r o du c t ( s ) s e l ec t e d- The list contains
the product (s) selected, a thumbnail of the product, coordinates
of the download piece,
estimated size of the download pieces, data host name, and
download button.
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L i n k t o d i f fe r e nt d o w nl o a d o p t i o n s - - M o
d if y D a t a R e q ue s tallows a user to change the defaults for
the download product.Modifications can be made to Data Format,
Archive Format, and Metadata Format. Products can be checked or
unchecked.
HELP- Information about The National MapSeamless Server Request
Summary page and Modify Data Request.
Note:The National Map Seamless Server Request Summary page can
be bookmarked to save and return to at a later time.
Downloading
1. C l ic k t h e d o w n l o ad b u tt o n f r o mT h e N a t i
o n a l M a p S e a ml e s s S e r v er R e q ue s t S u mm a ry l
i s t . C u r r en t O r de r S t a t us p a ge w i l lappear,
providing messages of the progress of the extraction. A request is
made to the product database to extract the defined area and
product.The extraction progress is displayed in the popup
window.
v. Once 'Raster Extr ac tion Complete' is displayed, a SAVE
option will appear. The random numbered zip file can be saved to
the computer harddrive.
4. U nz i p t h e f i l e a n d i t i s r e a dy t o f o r u s
e.
U.S. Department of the Interior|U.S. Geological SurveyURL:
http://seamless.usgs.gov/tutorial.phpPage Contact
Information:[email protected] Last Modified: November 22,
2007
