Just signed up for TerrAvion subscription imagery? Need to know how you can see your farm in our web app? Not comfortable yet of TerrAvion Overview web interface features? Need a refresher on all features? Continue to read to learn about the tools and features of the TerrAvion OverView web interface.
Login! If you are a TerrAvion customer, go to maps.terravion.com and enter in your TerrAvion login info. You can also access the login page from www.terravion.com in the right top corner. If you are not a customer and are interested in taking a look at OverView with a demo account, request a demo here.
Once you log into OverView, you see the Farm and Field index on the left side of your screen. This is where you can search for a farm or field, or browse a list of your farms and fields for any given year that you have purchased data. For users with a lot of imagery, there is a filter feature that lets you filter your imagery by farmer, farm, and crop. This is important as many of the features in OverView will adjust according to which field you have selected.
Sharing Your Imagery
Did you know TerrAvion users can share their imagery with an unlimited amount of people at no additional cost? When users share their fields, the person that they have shared it with will get an email that prompts them to set up an OverView account of their own. After they set up an account, they will be able to view the data you shared with them. They will continue to receive image delivers at the same frequency as the primary user does for the rest of the season. Users can select from two sharing settings. The first one allows a person to view and share the imagery. The second option allows only the viewing of the fields.
The timeline towards the bottom of the screen is where users can select different image dates to view. There is a slideshow feature that enables users to better visualize the performance of their fields throughout the season. If you have not looked at the image from certain date, it will show with the crossed out blue eye symbol as is shown in the image above. The green colored date is the date of the image that you currently see on your screen.
As part of our standard product offering, TerrAvion currently provides 10 - 17 cm natural color, infrared and NDVI imagery, as well as 2 m thermal imagery. Starting in May, we will be introducing two new products; a pansharpend thermal and a synthetic natural color image. Users can select the desired map layer from a list from the menu on the bottom center of the screen. The default map layer is 'color' which stands for natural color. The selected image layer is shown in blue.
Natural Color Imagery
This is the same kind of image you would take with your camera or what your eye would see from a plane. Natural color imagery can be used to spot plant growth variability, but also is valuable as a reference for multispectral and thermal imagery. The natural color images are hard to process, and for this reason, most imagery companies do not include them in their product offerings.
Color infrared images depict plant biomass. Infrared imagery illustrates vegetative areas because nearly every plant reflects infrared light at a constant rate. Plants with heavy biomass show up as bright red colors in the imagery, with areas of bare soil appear as a grey color. Infrared imagery is a great tool that helps with highlighting specific issues when other map layers lack that information.
Our NDVI, or vigor layer is a plant health index that shows you where your crops are thriving and where they are stressed. NDVI imagery is a combination of TerrAvion's red-green-blue (RGB)/natural color imagery and our Infrared imagery. The red band in RGB imagery correlates to photosynthetic activity in plants. This, combined with infrared data which relates to plant biomass, provides growers with a very accurate visual representation of the health of their fields.
There are two vigor layers, a standard vigor layer and a dynamic vigor layer. The standard vigor layer has a color scale that stays constant as you change fields and image dates. This layer is an excellent tool to assess changes in vigor from image to image through the growing season as the same colors will always represent the same NDVI values. However, in many cases, this layer doesn’t provide great detail. That's where the dynamic vigor layer comes in. The dynamic vigor layer has a color scale that automatically adjusts to fit the current range of NDVI values for that specific image. This layer provides much more detail, but it is important to note that the scale will adjust as you switch to different dates, so the colors you see in one image may not represent precisely the same NDVI values on the same field at another time. Users also can manually adjust their NDVI color scales. For more information on standard and dynamic vigor imagery, click here.
At the top of the screen is a histogram button that allows users to see the histogram graph for there NDVI data. This graph will tell you how many acres and what percentage of your field corresponds to specific NDVI values. This is also where you would manually adjust your color scale.
In addition to the two types of NDVI layers, users can also select from a menu of different color maps. While we recommend our default, red-yellow-green color map to most users as it is the most intuitive, we off a variety of color maps that all offer different levels of contrast when viewing your data. These different color maps can be useful for focusing in on a particular issue that has a specific NDVI characteristic, such as weeds. To change NDVI color maps, just click on the color scale at the bottom right of the screen to prompt the color map menu. This scale is only visible in the NDVI and zoning map layers.
TerrAvion also provides a third type of vigor layer; the zoning map layer. The zoning map layer is our NDVI data but presented in a lower resolution. This layer allows you to get a different perspective of your NDVI imagery and can help certain issues stick out a little more clearly than they would in the normal vigor imagery.
TerrAvion’s 2 m thermal layer shows approximate crop or ground temperature. Due to the high resolution for a thermal map, it is very precise in indicating any changes in temperature in your fields. The thermal layer is a great tool for monitoring irrigation systems and other moisture situations in your field. It is a dynamic map which means that the color represented in the data at one date, is different from another date. The purple color is always the lower temperature, while yellow represents a higher temperature.
Zone Creation Tool
The TerrAvion zone creation tool allows users to turn high-resolution NDVI maps into simplified, more actionable management zone maps that can be exported as shapefiles and imported into any farm management platform or directly into a controller. These NDVI zoning maps can be easily incorporated into variable rate application plans, allowing growers to direct their resources to exactly where they will be most effective based on real-time data. NDVI zoning maps can also be used to make scouting, sampling, and harvest zones. This feature was introduced in 2018 and is one of the most popular features in OverView. To learn more about the zone creation tool, click here.
Polygon Tool and Labeling Menu
The polygon tool and labeling menu can be found in the top right menu. With the polygon tool you can draw a zone in your field. In the labeling menu, you can see the size of your zone or see the NDVI data for only within that zone. In that same labeling menu, users can also make notes on your zones which you can share with other people who have access to the imagery. Users can select to have their polygon visible on their maps as they view their new imagery throughout the season, or they can hide their polygons. You can also export a SHP-file of your zone. The labeling menu is a great place to communicate with all people involved in the management of a field. Coming soon, scouting notes that growers make in their TerrAvion mobile app will also be available in the labeling menu. Click here for more information on the polygon tool.
Summary View Tool
The summary view tool in the left top corner allows you to view a summary of all four map layers for a single field in one window. Users can then quickly cycle through their image dates, allowing them to visualize the progression of their fields throughout the season while viewing all four images at once. You can download a PDF version of this summary view as a single or multi-page download.
Downloading Your Imagery
OverView Users can download their imagery in a number of ways other than the summary view PDF download mentioned above. Users can download high-resolution JPG images as well as a regular and multi-band geotiffs. In addition, users can create a PDF report of a single field. You can select which map layers should be included and add notes to your PDF report. The report automatically also includes the farm, field, and image data information. Click here for more information on the PDF downloader tool.
By opening the analytics tool from the MORE menu at the bottom of the screen, users can compare different images to a single field to each other either side by side or by a split view with a slider. This is helpful to visualize changes in your fields throughout the season.
OverView users have a number of dashboard tools available to them under the Dashboards drop-down menu at the top of the screen.
The user dashboard is just another way to view your farms and fields. Customers with a lot of imagery may find that navigating their imagery in the user dashboard is more convenient than using the normal farm and field index.
Field Management Dashboard
New for 2019, OverView users now have the ability to change the names of their farms and fields in the field management dashboard. Users can also mass share imagery by selecting multiple fields and then sharing the entire group of selected fields.
The Field Dashboard allows users who have connected their OverView account to SST/Proagracia or the John Deere Operations Center to manually select which TerrAvion images they would like to push to their connected accounts. Click here for more information on connecting to MyJohnDeere. For the 2019 season, users will also be able to connect their TerrAvion imagery to their Agrian and EFC accounts, amongst others.
Flight Status Dashboard
The flight status dashboard allows users to see the status of their flights and image deliveries. This screen shows when their fields are scheduled to be flown and when the plane is actually in the air. Other flight-related information includes when their flight has been completed, when the imagery is being processed and when it is delivered to their account.
Also found in the MORE menu, growers can access a statistics table for their NDVI imagery. Users can download a CSV file of the statistical information for a single field for the entire year, or for all of their fields on a specific date. For more information on the statistics table, click here.
This was a brief walk through of tools and features in the TerrAvion OverView web interface. For more details on any of the tools and features mentioned in this video, please visit our help site. To discuss subscription types and prices, please contact firstname.lastname@example.org. For any other questions, please contact email@example.com
To learn about our new, 2019 mobile app, click here.