 This session will be an overview of the GIS application within DHIS2. We will start by demonstrating place search. This allows you to find various locations within the DHIS2 GIS application. We will then demonstrate the use of the facility layer, thematic layers, boundary layers, Google Earth Engine, and external map layers. These layers allow you to add various data types to the map, and we will describe these in much more detail as we go through the session. We will also discuss thematic layer options. This includes legends, methods, and classes. These allow you to define how your data will appear on the maps that you have created. We will also show the application of custom legend sets to the maps that you have created. Let's go ahead and get started with the session. In this session, we will go over using the GIS application. In order to access the GIS application, we will go to our apps and find the GIS application. After we enter the GIS application, we can see what the interface looks like. Let's describe the interface a little bit before we move on, as this looks quite a bit different when compared to the data visualizer and pivot table. Up top, we have the various layers that are available. The first layer that's available is referred to as the event layer. This is where we can add individual events to the map. So for example, if we are registering individual cases of malaria, we can map them using the event layer. The next layer is the facility layer. The facility layer allows you to map your facilities within the GIS application. After the facility layer, we have thematic layers 1 through 4. This allows us to map all of our health data in the form of data elements and indicators that are taken directly from DHIS2. After the thematic layer, we have what's referred to as the boundary layer. The boundary layer allows us to add administrative layers to our map. This includes areas such as regions, districts, provinces, states, etc. After the boundary layer, we have another layer called the Google Earth Engine. Have a look online to learn a bit more about how this works in practice. The Google Earth Engine allows us to add some data sets provided by Google satellites to our maps. We will show this feature in a little bit. Lastly, we have the external layer. The external layer allows us to add layers that are external to DHIS2. We will cover this as well in this tutorial. On the right hand side, we have the layer stack. Once we start adding actual layers to the map, we will define this a bit more. The plus and minus sign allows you to zoom in and out of the map. We have a magnifying glass button which allows you to search for locations on the map itself. And then we have a ruler which allows you to measure distances and areas. Let's go over a couple of these features now. Let's start by searching for a location. We can search for a location by using the magnifying glass. We type in the location we're looking for, and it will provide us with a list that match the search term that we're entering. If we click on the location, it will take us to it. We can of course zoom in to the location to see a bit more detail. Let's zoom back out. The next thing we can do is add an external layer to this map. We click on external layer and then edit layer. It will give us a prompt to say select layer. There are a couple external layers already available for you to use. How to add these external layers will be discussed in other academies. For now, we will just focus on using those layers that are already available. When we select a layer, we can then click on update. This will add that layer to the map. On the layer stack, we can quickly add and remove layers. For example, that external layer that I just added, we can remove it by clicking on the check mark next to the external layer option. You can see this quickly removes that layer from the map. We can also add it back to the same process. Let's add one layer from Google Earth Engine. We'll go to Google Earth Engine and click on edit layer. It then provides us with a prompt to select a data set. From the dropdown, there are several data sets available. You can read more about how this data is collected online. After we select a data set, there's a couple of different parameters that we need to define. Here we can define the minimum and maximum elevation, the color scale, and the steps. If we look at another data set, for example temperature, we actually have to select the period associated with the temperatures we want to display. We also define the min and max degrees, the color scale, and the steps. So each data set has different associated parameters that we need to define. Going back to the elevation data set, we'll just leave it as default and click on update.