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Map Basics

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Map Basics

Get to Know the Map Interface

Look around the interface to familiarize yourself with all its features and tools. Hover your cursor over buttons and click them to see what you can do. Close windows by clicking on the "X" in the upper right of the window.

lidar data viewer map interface

See a larger version of this image.

Zoom In and Out and Move Around the Map

Use the zoom controls to move to preset scales. You can also zoom in and out by using the roller wheel of your mouse. Pan around the map by clicking and holding down the mouse button while dragging the cursor around the map. Reset the map to the default opening scale and extent by clicking on the Home button.

Go to an Address

Type an address in the "Find address" field to zoom to that location. As you type, some suggested locations will appear. Be sure to choose the Oregon address!

Show/Hide Map Layers

Toggle the checkbox next to a layer to turn it on and off. The higher-level layer must be toggled on for a sublayer to display, even if you have checked a sublayer's checkbox. Click on the down-pointing arrow to the left of a layer to see what's in that layer. Click on the down arrow to the right of a layer to see options for that layer.

Available layers:

 

Click on the Map to Get Pop-up Information

When you click anywhere on the map, a Pop-up window appears. The content of the popup window depends on which layers are showing. If many layers are showing, the top bar in the window will display an arrow so you can click through the layer information. Layer information appears in the order the layers are displayed in the legend. The window may show a number of elevation and "NoData" layers because of the way the map was constructed: In some areas there are overlapping lidar collections or areas where lidar has been collected multiple times. The most recent lidar collection is layered on top of older lidar collections. Elevation values show all bare earth and highest hit elevation values for all lidar collections at the cursor location. The most recent collection displays first; older collection elevation values follow in subsequent windows.

For example, if you have these layers turned on:
multiple layers in popup

you will get popups associated with each layer as you click on the arrow:
multiple layers popup sequence

Downloadable Lidar layer:
A blue border appears around the area. Popups for this layer show the USGS 7.5 minute quadrangle name, the Ohio grid code, the link to download the lidar data, in zip file format, for the quadrangle, covered project area(s), and data acquisition dates in the same order as the covered projects. To learn more about the covered projects, turn on the Projects layer or find the reports on this page. To see what is included in lidar data zip file, see the section above: Downloadable Lidar Data.
lidar data downloadable layer popup info

In progress OLC lidar projects:
A blue border appears around the area. Popups for this layer show the project name, program, project area in square miles, acquisition date(s), map projection, and horizontal and vertical datums being used.
in progress OLC lidar projects layer popup

OLC developing projects:
A blue border appears around the area. Popups for this layer show the project name, partners, area in square miles, the status, and the contact email if you would like more information.
OLC developing projects popup

Completed OLC projects:
A blue border appears around the area; note that the project area in question may be bordered by or overlapping other completed project areas. Popups for this layer show the project name, program, area in square miles, acquisition date, map projection, horizontal and vertical datums, links to survey and acceptance reports in PDF format for the project, and a link to a shapefile in zip format that shows the status of all current OLC project areas.
completed OLC projects popup

Other Completed Lidar Projects (Non-OLC):
A blue border appears around the area; note that the project area in question may be bordered by or overlapping other completed project areas. Popups for this layer show the project name, program, area in square miles, acquisition date, map projection, and horizontal and vertical datums.
completed non OLC lidar project popup

Highest Hit Lidar Hillshade:
Popups for this layer show the elevation in feet at the clicked location, for example, at a tree top. The window may show additional "NoData" layers because of the way the map was constructed: In some areas there are overlapping lidar collections or areas where lidar has been collected multiple times. The most recent lidar collection is layered on top of older lidar collections. Elevation values show all bare earth and highest hit elevation values for all lidar collections at the cursor location. The most recent collection displays first; older collection elevation values follow in subsequent windows.
highest hit lidar hillshade elevation popup

Bear Earth Lidar Hillshade:
Popups for this layer show the elevation in feet at the clicked location, for example at a location with a tree removed. The window may show additional "NoData" layers because of the way the map was constructed: In some areas there are overlapping lidar collections or areas where lidar has been collected multiple times. The most recent lidar collection is layered on top of older lidar collections. Elevation values show all bare earth and highest hit elevation values for all lidar collections at the cursor location. The most recent collection displays first; older collection elevation values follow in subsequent windows.
bare earth lidar hillshade popup


Change the Transparency of Layers

Change the transparency of some layers so you can more easily see the layers below that layer, such as the annotation on a basemap. To change the transparency of a layer, click on the down-pointing arrow to the right of a layer name. If Transparency is available, click on it to open the transparency slider, then move the slider until you at the transparency level you desire.

transparency option

transparency 3

 

Change the Basemap

You can choose from a variety of basemaps to suit your needs. Click on the Basemap gallery button to select the one you want.

basemap gallery

Print a Map

You can print a map to your local printer or to a PDF. Click on the Print tool button, then follow the directions given in the window. You can adjust the print window area, page layout, page size, scale, and resolution (dots per inch, or dpi), and add your name to the map. The resulting map will not include a legend.

print menu

 

 

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More Map Tools

Measure Distances and Areas

You can measure areas and distances on the map, or get the latitude and longitude of a point. Click on the Measurement tool button, then select Area, Distance, or Location as the type of measurement. Select the units to be used for the measurement. To clear a measurement, double-click again.

measurement tool result

Then click on the map to start the measurement. Move the cursor, then click once to end a line, or for an area click repeatedly to create the area shape. Double-click to end the measurement.

measuring an area

Get the Latitude and Longitude of a Location

Click on the Measurement tool button, then the Location button. On the map, click where you want to see the coordinates. The green marker shows the coordinates where you clicked, while cursor shows your present cursor location.

Get the lat/long of a point