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Home ![]() ![]() If you are an experienced user, you can go directly to the viewer: Browsers | Viewer | Map | Scale | Layers/Legends | Redraw Map | Help | Tools IntroductionWelcome to The National Map Viewer. This viewer allows you to interactively view The National Map data as a map, customize the view, and print a map. Map tools allow you to move around the map, zoom in and out, identify features, and perform other functions. In the future, advanced functions will be available.Browser Recommendations and System RequirementsBe aware of the following requirements/recommendations for this application. We strongly recommend using one of the following browsers to view this application on Windows-based computers:
Important Note: The Viewer uses pop-up windows for some data entry and to display some results. You must temporarily disable any pop-up blocker that you have installed on your machine for these windows to work. Also, it has been determined that some firewall products may prevent navigational content (for example, buttons) from appearing on this site; this may require additional adjustment to the firewall software on the user end. The National Map Viewer interface does not support the use of the browser "Back" and "Forward" buttons. The ViewerThe map viewer window is divided into three active areas. The map is in the center of the window. The Scale, Layers/Legend, and Redraw Map functions display to the right of the map, and the Tool Bar displays to the left of the map.Click an area of the viewer screenshot below to find out more. ![]() Map ![]() ![]() Help ![]() ![]() Scale ![]() Layers/Legend A Layers/Legend selector shows below the Scale tool. Clicking on the Layers option causes the layer list to display in the pane below the selector. Clicking on the Legend option causes a legend to display. The currently selected option is highlighted. If either the Layers list or the Legend is longer or wider than the available space, a scroll bar will appear to the right or bottom as needed.
![]() ![]() LegendWhen Legend is selected, the legend pane shows a list of all visible layers and ![]() ![]() Redraw Map ![]() ![]() Tools in the Tool BarOverview | Zoom In | Zoom Out | Zoom Back | Find Place | Full Extent | Re-center | Identify | Elevation | Measure | Clear | Bookmark | Print | Download | Options![]() ![]() ![]() ![]() ![]() ![]() ![]() Click the Zoom In tool and then click on a spot on the map to zoom in to that selected spot. You can also zoom in to a selected area by clicking and dragging the cursor to create a selection box over the area of interest. The displayed layers will update if any have been selected or deselected in the Layers list. Note that some layers may appear or disappear depending upon the current scale. ![]() Click the Zoom Out tool and then click on the map to zoom out. The displayed layers will update if any have been selected or deselected in the Layers list. Note that some layers may appear or disappear depending upon the current scale. ![]() Click the Zoom Back tool to return to the previously viewed map extent. Note, however, that if changes have been made to the layer selections, the previous layer selections will not be preserved. The last layer selection and the current map scale will determine what layers are displayed. You can zoom back to previously viewed map extents as many as five times. ![]() Click the Find Place tool and a popup window will open that allows the user to select from the following options: Zoom to a State—Included in the dropdown menu are the 50 States and the District of Columbia. Zoom to a Partner Dataset—Entries in the dropdown menu take you to our current Partner datasets that contain high-resolution and larger scale data. For certain partners, you may need to zoom in to see available data. ![]() Address—Click the Zoom to an Address link and an entry form will appear in a popup window. Enter the Street Address, City, State, and Zip Code of a valid address within the United States. Partial entries of Street Address, City, and State or City and State only will zoom to the general area but may not include the street location. Street Address and Zip Code entries will center on the generalized street location within the Zip Code area. Zip Code only entries will zoom to the approximate center of the Zip Code area. Zip Codes may be entered as 5 digits or as ZIP+4 (for example, 12345-6789). Click on the Zoom to Address button to initiate the Viewer zoom action. Click on the Return to Menu button to return to the Find Place menu window. Click on the Close Window button to cancel and return to the Viewer main window. ![]() ![]() Named Feature—Click the Geographic Name/Feature Lookup (GNIS) link to query the Geographic Names Information System (GNIS). A form will appear in a popup window. Enter at least two parameters into the form. Feature names can be searched as an "Exact Match," "Starts With," or "Contains." "Exact Match" will match only those records where the feature name is identical to the words entered. "Starts With" will match records starting with the words entered. "Contains" will match records with feature names containing the word or words entered. Click on the Submit Query button. A number of records will be displayed with basic feature information and several links for viewing the feature and accessing further information. There are two links to show the feature in the Viewer. Click on the "Zoom" link to zoom to the feature in the Viewer. Click on the "Re-center" link to re-center the Viewer on the feature, at the current scale. Click on the GNIS "Details" link to go to more detailed feature information on the GNIS Web site. The ID number is the GNIS identification number for the named feature. Click on the QuickView "DRG," "DOQ," or "Composite" links to show simple images centered on the feature. There are also links to additional instructions, to send an email to a GNIS manager, and to view GNIS Frequently Asked Questions ![]() ![]() Zoom to a Point—Click one of three options: Longitude–Latitude, U.S. National Grid (USNG) Coordinates, or Universal Transverse Mercator (UTM) Coordinates and a corresponding entry form will appear in a popup window. For Longitude–Latitude, the default entry form is for Decimal Degrees but includes a link to switch to Degrees-Minutes-Seconds format. A Quick Entry form is available for users who have experience with the USNG format. For all Zoom to a Point options enter point coordinates and select an option from the Zoom Level dropdown box. The Re-center option will display the map centered on the entered coordinates at the current scale. Local, City, Region, State, and Multi-State options will set the scale at appropriate values for these features. Click on the Zoom to Point button to initiate the Viewer zoom action. Click on the Return to Menu button to return to the Find Place menu window. Click on the Close Window button to cancel and return to the Viewer main window. For all three options, a green triangle marks the coordinate spot that you zoom to. The green marker will remain visible even if you move or pan your view. To clear the marker, use the Clear tool. Extent—Click the Zoom to Bounding Box link and an entry form will appear in a popup window. The default bounding box form is for Decimal Degrees, but includes a link to switch to a Degrees-Minutes-Seconds format. Enter North, South, East, and West bounds in the designated text boxes. Click on the Zoom to Extent button to initiate the Viewer zoom action. The Viewer may adjust the boundaries to fill out the display window. Click on the Return to Menu button to return to the Find Place menu window. Click on the Close Window button to cancel and return to the Viewer main window. ![]() ![]() Click the Full Extent tool to zoom to the full extent of the main map. ![]() Click the Re-center tool and then click on a point anywhere in the map display to re-center the map to the clicked point. When you re-center, the displayed layers will update if any have been selected or deselected in the Layers list. Alternatively, click on the small black arrows in the border surrounding the map display to pan in the direction of the arrows. ![]() Click the Identify tool and then click on the map to display information for available features at the point selected. The information will be displayed in a separate popup window. At the top of the window is a table that contains image coordinates for the point selected. Below the table is a list of layers that you can query. Note that there may not be any features available in a particular layer for the point selected, which will result in a "No features found at specified location" message or a blank page, depending on the map service that is being used at the time. ![]() ![]() Click the Elevation tool and then click on the point of interest on the map. A popup window will show the results of your elevation query, including the surface elevation of the point clicked, the coordinates of the point clicked, and the source of the information. ![]() ![]() Click the Measure tool and then on your starting point on the map. A green dot will appear where you click. Then click on the next point where another green dot will appear. Both the total length and the segment length will be shown in a results box at the top of the map display. Continue to click on points to create as many segments as needed. Note that only the last five green dots will show on the map, but the total length displayed is for all segments. Use the Clear tool to close the Measure tool. ![]() Click the Clear tool to close the Measure tool or to remove the coordinate marker in the Zoom to a Point option in the Find Place tool. ![]() Click the Bookmark tool and a popup window will open that shows the URL (also known as the address) for the map currently displayed in the Viewer. The information displayed includes the primary Viewer URL along with the properties for the current display’s bounding box, classes, layers-on, and layers-off parameters.
1. The current URL properties can be copied and pasted into a document as text or as a link and saved or copied and pasted into an email message for sending to a friend. To recreate the map, open a Web browser and paste the text into the address box at the top of the browser page. Or, if you have saved the information in a document, you can simply click on the link and your default browser will open to the bookmarked map.
2. The URL can be saved as a browser “Bookmark” or “Favorites”
• If the browser you use does not support automatic bookmark creation (as in Netscape or Safari), then you will see a Reload button at the bottom of the Bookmark popup window. Click on this button to reload the URL into the address box to capture all the necessary information about the map currently displayed. When the reload has completed, go to the browser’s Bookmarks menu to create a bookmark. Be sure to give a name to your map for easy reference. ![]() Click the Print tool to print the current map view. A popup window will appear with a Create Printable Map link. It will take from 5 to 30 seconds for the map to be generated depending upon the number of layers included and the retrieval time to get these individual layers. Once the map is generated, a View Printable Map link will allow you to view the map in Adobe® Portable Document ![]() ![]() ![]() Click the Download tool to open a popup window displaying a list of extractable layers. Extractable layers are available for download and will be clipped to the current Viewer map extent. Layers that are currently visible in the Viewer are underlined. The initial page will have no checkboxes selected. Click the checkbox next to layers that you want to download. Currently, vector (line-based) layers backed by ESRI® ArcIMS™ map servers and certain raster (image-based) layers are extractable. Links to raster layers available for download from The National Map Seamless Data Distribution System will be provided on the results page, as appropriate. Due to the distributed nature of The National Map application, map layers will be downloaded from one or more servers. The results page will contain a link to a ZIP-archived data bundle of shapefiles, one ZIP-file for each extract server. Processing time should take from 5-30 seconds. There is a server timeout period of 30 seconds. If an extract server does not respond within the timeout period no results will be listed on the results page for that server. ![]() ![]() Click the Options tool to open a popup window to change Viewer options. The Redraw Map option affects when the map is redrawn or "refreshed" as layers are clicked on or off in the list. With the delayed option, ![]() ![]() The Measurement Units option is used to select the type of units displayed for distances and elevations. Choices are the Miles/Feet (U.S. Customary units) or Kilometers/Meters (Metric Units). The Measure Tool Units option enhances the Measure tool functionality by switching from miles or kilometers to smaller units (feet or meters) when you are zoomed in. previously, the units were displayed as a percentage of the larger units. The Mouseover Coordinate Format allows you to choose how coordinates will be displayed, based on cursor location. The coordinates are displayed in the status bar in the lower left corner of the window. You can now specify Decimal Degree format or a Degrees-Minutes-Seconds format or a Decimal Degree format. |
U.S. Department of the Interior ||
U.S. Geological Survey 12201 Sunrise Valley Drive, Reston, VA 20192, USA URL: http://nationalmap.gov/nmjump.html Maintainer: TNM Webmaster Last modified: Monday, 17-Apr-2006 07:07:26 EDT |
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