Choose an attribute field you would like to display: right click on counties layer and open attribute table
For map #1 Circle Map:
Style using “graduated symbols”
- Find this option in the layer properties/style dialogue
- We want to represent percent of county populations, so click the Equation symbol next to the column selector. Divide your selected column by the county population and multiply by 100. For example (WIDOWED_CY/TOTPOP_CY)*100
- Change method from color to size
- Adjust size range of your point symbols (2 to 10 is usually a good range). Unit should be "Points." Select 5 for classes. Select a classification method. Make sure your highest value is represented by the biggest point size.
Style point symbols’ color, outline color, and transparency
Style counties layer with greyish fill and white outlines (width should be 0.5 point)
Style state outlines with transparent fill and white outlines (width should be 1 point)
- Export map and legend to PDF: Project > New Print Layout > [name the map layout] > add map or add legend > export as PDF. Remember to zoom in to show only the 48 contiguous, then Alaska, then Hawaii. Also rember to reproject Alaska and Hawaii before exporting them.
For map #2 Heat Map:
In the same QGIS file, style the centroids layer using “heatmap”
Open the layer palette and create a new layer with the menu that is accessible in the top right of the layer palette. Make sure that this layer is on top.
Select one of the state outlines. Then go to Select > Same > Stroke Weight. Now, all of the state outlines should be selected. Copy just the outline of the state(s) and paste (paste in place) into the new layer. This outline will be the clipping path.
Convert this outline to a single path by going to Object > Compound Path > Make.
Select both the clipping path and the objects you want to mask. You can use Select All.
Choose Object > Clipping Mask > Make. Select the outline and give it the proper stroke color.
Copy and paste into its own layer in the tabloid sized map layout .ai file.
Create map layout in Illustrator. Add engaging design elements.