Limiting the sample size protects you from reading potentially millions of records. The maximum sample size is the maximum number of records to be considered for classifying data. If you want to change the maximum sample size, click the Classify button to open the Classification dialog box, then click the Sampling button and type a new value.If you click Background, you can choose the fill symbol that will be used behind your graduated symbols. Click the Template button to choose another marker symbol.If you are drawing them inside areas, use a light color to shade the areas. Make sure they're dark enough to be seen easily. All the symbols should be the same color.See Working with data frame reference scales for more information. Your symbols will scale as the map's page size is scaled. Right-click the data frame and click Set Reference Scale. If you want your graduated symbols to get larger when you zoom in, set a reference scale.See Working with the classification legend for more information. You can set format properties for the class range labels that appear in the legend and the table of contents.The values in this field will be used to divide the Value field to create ratios. Optionally, select a Normalization field to normalize the data.To set a critical break around a central, important value, right-click the symbol class and click Set as critical break. Classification methods are used for classifying numerical fields for graduated symbology. When you classify your data, you can use one of many standard classification methods provided in ArcGIS Pro, or you can manually define your own custom class ranges. To refine the classification, you can edit the Upper value of each classification manually by typing new values. Natural breaks (Jenks) Geometrical interval. Select the numeric field that contains the quantitative data you want to map. From the Primary symbology tab, on the Classes tab, you can do the following.Click Quantities and click Graduated symbols.Click the Symbology tab on the Layer Properties dialog box.Right-click the layer in the table of contents and click Properties.See Classifying numerical fields for graduated symbology for a good overview on the classification methods available in ArcGIS. Population for Texas counties is classified and displayed using graduated symbols.Ī key design aspect in using graduated symbols for a layer is about classifying numerical data. Click Quantities, then click Graduated colors. Click the Symbology tab on the Layer Properties dialog box. Right-click the layer you want to draw using graduated colors in the table of contents and click Properties. Each class is assigned a graduated symbol from smallest to largest. See Classifying numerical fields for graduated symbology for a good overview on the classification methods available in ArcGIS. Within a class, all features are drawn with the same symbol. Using a graduated symbols renderer, the quantitative values for a field are grouped into ordered classes. The graduated symbol renderer is one of the common renderer types used to represent quantitative information.
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