Pitney Bowes MapInfo Professional - Manual (Page 291)

• One buffer of all objects - Select this option to create one buffer for all of the objects you have
selected. For example, if you are buffering Pennsylvania, New York and New Hampshire, one
buffer will be created for all three of these objects.
• One buffer for each object - Select this option to create one buffer for each object you have
selected. For example, if you are buffering Pennsylvania, New York and New Hampshire, each
object will have a separate buffer.
• Buffer Width Distance using Spherical - Select this option if you want the buffer to take into
account the curvature of the Earth. Using this method, MapInfo Professional converts the data to
Latitude/Longitude and then creates a mathematical calculation of the buffer. You cannot use this
method for non-Earth projections.
• Buffer Width Distance using Cartesian - Select this option if you want the buffer to be calculated
as if the map is on a flat plane. Cartesian coordinates are a pair of numbers, (x, y), defining the
position of a point in a two-dimensional space by its perpendicular projection onto two axes which
are at right angles to each other. If you are using a Latitude/Longitude projection, this option is
disabled.
4. When you have completed your entries and selections in this dialog box, click the Next button. The
standard Data Aggregation dialog box displays.
If the editable layer is the Cosmetic layer, the Data Aggregation dialog box will not display
because there is no data in the layer to aggregate. The OK button displays in place of the
Next button. Click OK to begin the buffer operation. Note:
5. Highlight each of the columns to complete the fields in this dialog box.
• No Change - Select this option to keep the value for the selected column in the target row
unchanged. This option only displays when you combine objects into a target object.
• Blank - Select this option to store blank values in the selected column(s). To store blank values
in all displayed columns, select the No Data check box. Only choose the Blank option to blank
out individual columns.
• Value - Select this option to store the value that displays in the edit field in the new row. When you
select this option, enter an appropriate value in the field.
• No Data - Check this check box if you want no data aggregated to any column.
6. After setting the appropriate data aggregation parameters, click OK. MapInfo Professional calculates
the buffer according to the parameters you set and creates the new objects in the editable layer. The
original objects remain unchanged. Once MapInfo Professional has created the buffer region, it puts
it in the editable layer.
291 MapInfo Professional User Guide
Chapter 11: Buffering and Working with Objects