Differences

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--- census:qgis_using [2025/12/19 20:05] – created mlivolsi
+++ census:qgis_using [2025/12/19 21:55] (current) – [Assigning Colors to Areas] mlivolsi
@@ Line 22: / Line 22: @@
 Menu --> Project --> New
-==== Showing a map ====
+==== Showing a street map ====
 Menu --> Web --> Quick Map Services --> OSM --> OSM Standard
 You can zoom in on an area by using the scroll wheel on your mouse
+==== Adding files to your project ====
+  * Menu --> Layer --> Data Source Manager
+  * On the left hand menu, it should default to "Browser"
+  * On the main panel, choose the directory where your data is located (ie. /opt/qgis)
+  * For each state do:
+    * Choose the file with the extension ".shp"
+    * Double click the file
+==== Assigning Colors to Areas ====
+I want each state to have it's own color, and each region to be a gradient of that main color.
+We'll have 4 main map colors (<fc #ff0000>red</fc>/<fc #00ff00>green</fc>/<fc #4682b4>blue</fc>/<fc #ffa500>orangello</fc>)
+  - In order for each PUMA region to have it’s own color,
+    - right click the layer
+    - Go to Properties --> Symbology
+  - On the VERY UPPER drop down, choose "Categorized"
+  - The "Value" is a field that included in the file (a long story). Choose GEOID10
+  - Click "Classify" to display all the GEOID10 values
+  - For the "Color Ramp", choose a pre-installed theme (like "Reds)
+  - In the file, choose a unique value that will identify each individual region
+    - (in this case, column PUMACE10)
+  - In the “Color Ramp”, I chose “Randomize Colors”
+  - Click the “Classify” button and all the values will appear next to it’s respective color.
+  - Click “OK”
+{{:census:qgis_assign_colors.png?600|}}