Fields
The Fields drop-down list displays the fields and expressions you are using to build each pie chart. There is one pie chart per record and one pie wedge for each field or expression. Double-click on a field or expression to change the brush style for its corresponding pie wedge.
Brush
Choose Brush when a field or expression is selected in the drop-down list to change the brush style for its corresponding pie wedge.
Chart Type
Enables you to choose the type of pie chart.
Graduated
Choose Graduated to make the size of the pies proportional to the sum of their components.
Half Pies
Choose Half Pies to display half pies instead of full pies.
Pie Dimensions
Enables you to set the size of the pies or half pies.
Diameter
Indicates the maximum diameter of a pie. The default diameter is .25 inches, and the valid range is .1 to 10 inches. Set paper units in System Preferences.
When you select the chart type Graduated, the value in the Max Diameter box is the diameter, in paper units, of a pie when the pie's sum is the sum specified in the for sum text box. If the pies are not graduated, then all the pies are the same diameter, as specified in the Max Diameter box, and the value in the for sum box is ignored.
for sum
Available when Graduated chart type is selected in the Chart Type group box. Indicates that at this sum, the pie is the maximum diameter in size.
Cancel
Cancels customization and displays the Create Thematic Map - Step 3 of 3 Dialog Box.
OK
MapInfo Pro customizes your map according to your specifications and displays the Create Thematic Map - Step 3 of 3 Dialog Box.
Options
The dialog box expands, displaying more customizing options.
Orientation
Choose one of the buttons in the Orientation box to set the pies' placement and direction with respect to the object's centroid in the base layer. Each button shows a different orientation. The base layer is the map view of the table on which you have chosen to base your thematic map.
For example, if you are making a thematic map with pie charts from the States table, the States layer is the base layer. The default is to center the pie chart over the object's centroid in the base layer.
Pie Attributes
Enables you to specify certain aspects of the pie charts.
Start Angle
Specify at what angle you want the first pie wedge to start.
Clockwise
Choose Clockwise to have the pie wedges run clockwise.
Border Pen
Choose Border Pen to set the pen style for the pies' borders. The Line Styles dialog box displays. The default is a black, single width, solid pen.
Graduate Size By
Choose one of the three scaling methods for the pies on your map.
Square Root
Choose Square Root to scale by square root.
Constant
Choose Constant to scale linearly.
Log
Choose Log to scale logarithmically (base 10).
This option is available when Graduated in the Chart Type group box is selected. All graduated pies are scaled down to a zero-sized pie for a zero sum. The default setting is to scale by square root. We recommend that you scale by square root for pie charts because the pies' area varies as a square of the radius.
See Also: