CLICK HERE TO ENTER THE MAP
This system uses ESRI’s GIS Server to display mapped data for two Brazilian cities in 2000 and 2010. The original data and shape files are drawn from Brazil’s national statistical institute (IBGE). Data are presented at two geographic scale, the Areas de Ponderaçao (APs, average population size about 32,000) and the much smaller Setores Censitarios (SCs). We make data available in a more convenient form, selecting only a subset of important variables at either scale, aggregating SC data to the AP scale, and drawing on available microdata samples provided by IBGE to create a number of additional variables at the AP scale.
The system initially displays a map of Brazil including both Rio and São Paulo. Users can select a data layer from the dropdown menus that appear when clicking the menu selector in the upper left corner. The year slider determines the year of the data, and the user will notice that many variables are available only in 2000 or in 2010. The zoom level determines the scale of data to display – at a low zoom level the maps show data at the AP scale, switching the SCs as the user zooms in further.
For navigation:
- Choose a category in the first dropdown list, then choose a variable in the second dropdown list.
- Choose a year in the time-slider bar. The corresponding layer will show on the map, and the layer’s legend will show in the left-side panel under the time-slider bar.
- Click and drag the mouse to pan the map.
- Zoom in: click the zoom in icon, or mouse scroll forward, or SHIFT + Drag the mouse (draw a rectangle).
- Zoom out: click the zoom out icon, or mouse scroll backward, or SHIFT + CTRL + Drag the mouse (draw a rectangle).
- Click the “Select a basemap” to select a basemap in the expanded window, and click the “Select a basemap” again to close the expanded window.
- Type in the “Find address or place” bar to search your address.
- Click a feature on the variable map you choose, and a pop-up window shows its attributes.
- Click “Select an area (Polygon)” at the top-right corner of the webpage, click on the map to start drawing a polygon, double-click to finish drawing the polygon, and a series of features will be highlighted. Click the highlighted features to identify attributes. You can also click “Download Data (Selected area)” to download the attribute table of all highlighted features in a CSV format.
- Click “Reset” at the top-right corner of the webpage to clean highlighted features.
- Click Printer button at the top-right corner of the webpage to print the map.