Clicking the Advanced button on an OGC Layer will allows you to configure the following information for your Layer.
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| Area | Point |
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Polygon Mapping: This will display your polygons with a different colour depending on the value in the selected Field Name. | Point Mapping: This will display points with symbols of a differing size dependent on the value in the selected Field Name. |
Field Name
Select the Field name that you wish to use to create your Thematic. Only fields of numeric types may be selected for thematic calculations.
Method
Equal Count: This will classify your data such that for each range of data, there are an equal number of records (or rows in the table). Ranges will not be of equal size.
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Standard Deviation: This places ranges at various standard deviations either side of the mean value of your data. Ranges will not necessarily be the same size, or contain the same number of records.
Note that records with null values for the thematic field will be ignored.
Number of Ranges
Select the number of Ranges you wish for your Thematic Layer
Shape
Select the Shape you wish for your Point Thematic Layer
Min Size
Select the minimum size you wish for your Point Thematic Layer
Max Size
Select the minimum size you wish for your Point Thematic Layer
Colour
Choose the colour you wish for the Point Thematic Layer.
Start Colour
Choose the colour you wish for the Start of your Area range.
End Colour
Choose the colour you wish for the End of your Area range.
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To display the geometry options first check the Geometry box.
Source
This can be used to specify a Select statement for retrieving the geometry for a different table. Please speak to your Astun Consultant for more information if required.
Field
Use the Field drop down to select the field containing the geometry information.