According to the U.S Census Bureau's 2015 estimate, the offical poverty rate in United States of America is 13.5 percent.
That year, an estimate 43 million americans lived in the poverty according to the official measure.
According to the Census Bureau, 19.4 million people reported deep poverty, which means a household income below 50 percent of their 2015 poverty threshold.
These individuals represented an estimated 6.1 percent of all Americans and 44.6 percent of those in poverty.
A cursory look at the chart shows that northern and western states have lower poverty as compared to southern states. Population seems to a major factor but trend is not consistent. For example, Both Wyoming and Montana are low population states and geographically close to each other. Yet, Montana has higher poverty rate than Wyoming.
The project follows the Martini Glass narrative visualization structure. The Home page represents the base of the visualization structure. The user is being exposed to the author driven content and will be led through two additional scenes representing stem. The Scene3 page is the "jumping off point" and leads user to the final page. Final page contains reader driven content and it allows users to draw their own conclusions.
Each page/scence contains About the Visualization section at the bottom of the page. User can learn more about the user interface events, triggers, annotations and paramters for that particular page.
The menu items in the navigation bar and the Prev, Next button at the bottom of this page enable the User Interface events. User interacts by clicking on the button or menu items to navigate to various part of this story. The mouse hover is another user interface event. The hover event allows proper positioning of the tooltip. As mouse moves from one bar to another, changes in X and Y position causes opacity to revert back to its original state in the previous bar and change in the new bar.
The annotation is represented by the legend on the top-right of the chart and a tooltip when mouse is hovered over different bars in the chart. The legend and labels along the X and Y axis provides additional annotations for the chart.
The mouse click acts as a trigger event for navigation. The mouse hover (mouseover) event is a trigger for the tooltip in the bar chart. The highlighted items in the navigation bar and colored buttons with icons provide visual clues about the user actions triggers to the user.
User can expand the About the Visualization section by clicking on the + icon. Once the section is expanded, the + icon changes to - icon. User can click the - icon to collapse the section.
This section is hyper linked to the next section. The name of the target section is passed as an input paramter to the buttons and items in the navigation bar.
The charts in this and next two scenes are rendered through Vega library. Vega is a declarative language and entire chart including data is defined as a JSON object. The data for the chart is passed as a JSON object to Vega API function for rendering axis,bars and tooltips for the chart. The JSON object is stored seperately in the overallpoverty.json file under data folder.
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