[2.23] Event clustering in GIS: You can now view clusters of events in the event layer of the GIS app. This dramatically improves the scalability and lets you visualize millions of events in a single map. Try zooming in and see the clusters being updated. The event layer clusters are based on the longitude/latitude of the events which allows for geospatial analysis of disease outbreaks, surveys and more. Filters can be defined per data element, e.g. you can filter age groups and gender in a similar style as you do in event reports. After drilling down to individual events you can click on points to show a dialog with additional information about the event. You can select start and end dates or relative periods for the time dimension. The color and size of the clusters / points can be controlled under options.
[2.23] Event layer favorites: Maps with event layers can now be saved as favorites. You can combine the event layer with any other map layers in the favorite. Event layer maps can also be used on the dashboard. Have a look at the Malaria dashboard on the demo.
[2.24] Place search in GIS: You can now search for places and regions on the GIS app. Click on the magnifier icon and type the name of the place. You will get suggestions as you type. Select a place in the list to see it marked on the map. Click the x-button in the search field to remove the marking.
[2.23] GIS area measurement: The GIS app now lets you measure areas on the map and provides information about the size of the area and perimeter distance. Use the left-side measurement dialog to put area measurements on your map.
[2.24] Color scales for GIS thematic layers: Select among nice looking color scales from ColorBrewer when you visualise thematic layers.
[2.24/2.25] External map layers: The GIS app now supports TMS (Tile Map Service), XYZ and WMS (Web Map Service) layers. These are all popular protocols for map data and there are numerous map services available, allowing you to display maps for rivers, roads, weather, land data and everything else. External map layers can be set up from the Maintenance app, and then be accessed from the top bar in the GIS app.
[merge] GIS layers for elevation, population density and nighttime lights: DHIS 2 now supports map layers from Google Earth Engine, which includes more than thirty years of historical imagery and scientific datasets, updated and expanded daily. So far we support three datasets, but more layers will be added in the months to come. You find the Earth Engine layers in the top menu, next to the boundary layers. The elevation layer can be used to visualise the risk of Mosquito-borne disease. Select a color scale, minimum and maximum elevation, and the number of steps to divide your range in. The same options are available for the population and nighttime lights layers, which is also an indicator of where people live.