The “Where we work” page is an interactive mapping application supported by Environmental Scientific Research institute (ESRI)’s cloud-based system for hosting spatial data and performing basic spatial analysis. This application has been carefully developed to serve information on areas of operation of USAID in Ghana, poverty prevalence, per capita expenditure and agricultural production in the areas above the eighth (8th) parallel of Ghana, also known as the Savannah ecological zones comprising the three northernmost regions and parts of Brong Ahafo and Volta Regions that are neighboring the Northern region of Ghana.
A click on the “where we work” tab displays the window below indicating regional boundaries.
Overview of the default “Where we work” window
The “where we work” default display window comprises the following;
A title bar, a search window, zoom-in/out tools, home, map window and a set of tools for viewing and running some operations on the layers contained in the application.
The title bar which also contains some tools for use on the content of the page such as Legend, Layer List, Basemap Gallery, Bookmark and Print icons. By hovering over each of these icons, a pop-up of what each does is displayed as shown in the following pictures.
A click on the Legend icon displays symbols of the active layer in the window as shown below.
The Layer List icon shows a list of all layers contained in the application. By clicking on it, you should see something similar to the image below
The Basemap Gallery is a collection of basemaps that the user can choose from. Basemap as used in this user-guide refers to the background reference information onto which other datasets or thematic information is placed. Its purpose is to provide background detail necessary to orient the location of the map and to give it an aesthetic appeal and authenticity.
The Bookmark icon allows the user to save a link for later use and easy retrieval.
The Print icon makes it possible to print the displayed map to any user defined format such as pdf, png, jpg etc
The Zoom-in/out as the name indicates, makes the displayed image appear bigger or smaller
The home icon returns the user to the default “Where we work” page
In the pages following, a detailed view of each part of the page is presented.
When the Legend icon is clicked, it expands, as shown in this picture, displaying the legend of the layer that has been activated. In this example, the regional boundary layer is active, with each color representing a specific region in the map.
With the icons and on the title bar of the Legend window, the window can either be collapsed or closed respectively.
THE LAYER LIST
The Layer List window displays a list of all layers contained in the application under the heading “Operational Layers”.
To activate a layer, click on the box to the left of the layer. It turns and the layer appears in your map window as seen above. The name of the layer is shown to the right of the. In this example, the activated layer is ADVANCE Nucleus Farmers.
To view the symbols of each layer, you can either click on the name of the layer, which turns gray as seen below, or click on the black arrow to the left of the box, which turns to expose the symbol.
To view additional information about the layer, click on the three dots to the right of the layer. This displays a window similar to the image below showing what the user can do on a layer.
|The zoom to, allows the user to view the extent of coverage of a particular layer.|
By sliding the bar on the transparency, the user is able to tone down the color intensity of the symbols used in representing the layer as shown in the pairs of images below.
Images before transparency was set
Images after transparency of 50% was se
Disable Pop-Up leads to the disappearing of a window that suddenly appears (pops up) when an object is clicked in the map view. When this property is activated, no pop-ups will be displayed on the layer whose pop-up is disabled. After disabling pop-ups, it can be enabled by clicking it again. See the image on the side for an example of a pop-up.
The default application presents all available layers in a certain order. To alter this arrangement, which only applies to a session, unless bookmarked, the Move up or Move down option helps the user to re-arrange the layers to suit his/her needs.
In the image to the left, one may be interested in toggling between ADVANCE Nucleus Farmers and the Prevalence of Poverty, which was originally found at the lower parts of the Layer List, and may require scrolling down the page each time, which can be inconveniencing sometimes.
To avoid that, the user can use the Move Up on the layer required to be moved up in this case, Poverty Prevalence, into a position that makes it easier for the user to toggle with other layers of interest.
View in Attribute Table, when clicked, opens a table of descriptive information on the layer at the bottom of the map view. Each table contains a number of columns and rows with each row representing one symbol/item contained in the layer while each column represents the descriptive properties of the layer. See image below.
In the attribute table above, a number of things can be done, including querying the data using the Options tab directly above the table, clicking a row of information in the table to select an item, zooming to the selected item, clearing the selection and finally refreshing the page.
When the options tab is clicked, it displays an image similar to that below;
Click on Filter to open up the Filter window as seen below
In this window, click on to open the definition windows as below
Define your query. Example; we will like to select all the females in the ADVANCE Nucleus Farmer layer.
Since “female” is under gender. The query will be defined as shown in the following images, when “Unique” radio button is checked.
To define multiple selection, click on the as seen below, the user wants to select all females in Brong Ahafo region.
The result of the above query/filter is the image below. Showing two (2) outputs in Brong Ahafo, also highlighted in the map view.
Finally, the last on the Layer List’s menu/pop-up window, Show Item Detail, as the name connotes, provides detailed information on the layer. This is however not going to be used in this application.
THE BASEMAP GALLERY
The Basemap Gallery provides the user the options to choose a background or canvas to apply to his/her map view. The options available are as shown in the image to the left of this text.
|The images following presents the effects of some of the choices.|
|Light Gray Canvas|
The Bookmark icon allows the user to save a link for later use.
To bookmark in this application, enter a meaningful name or copy the URL in the web address bar into the Bookmark Name window and click the to add it to the window as seen in the image below.
Several bookmarks can be added to the list and any of them can be deleted by simply clicking the delete button at the bottom of the bookmark window.
The Print option allows users to print out map products in various formats.
In this window, the user is expected to enter an appropriate title for his/her map, choose the layout, i.e., Landscape or portrait as well as paper size and the print format. See below for available formats.