The values table must be set to mappable (Table>Maintence>Modify Structure, Table is mappable check box) and have map objects to show in layer control.
Assumptions- Tables are called Boundary. tab and data. tab, and there is a common field between the 2 that relates the data to the boundary, we'll call them Data.ID and Boundary.ID. Add a col to the boundary file to hold the key value from the Data file, Update the boundary file with the data file col you want to map, join where data.ID = boundary.ID and then thematic map the boundary file on the newly added data, OR... write a join query and thematic map that. Open SQL, Place the boundary file and the data file in the table section, in the Field section, list all *, or only the fields you need from each table, in the where section place the field from each table that will join them (.IDs), and name a table for the Into Table Name section, or use the default QueryN, For example Select Boundary.ID, Data.Thematic_Value_Field From Boundary, Data Where Boundary.ID = Data.ID into SomeTableName. Thematic map on SomeTableName Save the workspace, and that query will be there and refreshed every time its opened. I would use the first approach if that value will be around and needed again and again, the second if its not needed often or again, as the newly added data will be carried in the boundary file. William "Woody" Woodruff Zoning Administrator Charter Township of Union, Isabella County, Michigan -84.80947000 43.61095100 2010 S Lincoln Rd, Mt. Pleasant, MI 48858 (989) 772 4600 EXT 41 Visit our web site at http://www.geocities.com/ctuzoning/index.htm -----Original Message----- From: Landau Nicholas (5NC) PAC Information Manager [mailto:[EMAIL PROTECTED] Sent: February 19, 2004 08:39 To: [EMAIL PROTECTED] Subject: MI-L FW: Problem Using Layer Control > I have the mapping boundary file in a folder and the table of values that > I want to shade in the same folder. > > I open MapInfo and load both files. > > The map appears but when I open Layer Control only the Cosmetic Layer and > the Mapping Boundary layer are shown. > > When I try and add the Table layer, the Mapping Boundary layer is again > added. > > What am I doing wrong? > > Nick Landau --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 10526 --------------------------------------------------------------------- List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Message number: 11035
