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Re: [udig-devel] Data Format, Text Delimited - another quick question
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Adrian,
I followed this procedure by opening the usa_counties.dbf file used
for the Walkthrough. Added a column named MBR,N,8,0. Entered a member
count (number) for each county. Some counties had "0" members, most
had at least "1" member. Saved the .dbf file.
Opened uDIG, added a new map, added a new layer using the
usa_counties shape file. Selected the Style Editor for the layer.
Selected MBR as the attribute. Set Classes to 5. Initially used
Quantile but this changed to Custom when I changed the values. Left
Normalize and Hide alone. Changed the values to: 0..1, 1..25,
25..100, 100..250, 250..19000.
When the map is updated, there are several counties who show a color
for 250+ which only have 1 or 0 members so the color representation
is inaccurate. When I click on Information and click on the county,
both the property "MBR" and Value "0" are accurately reflected.
Any thoughts as to what I might be doing wrong?
I am using a Mac Intel Powerbook. Thanks for your help...John
On Nov 30, 2006, at 11:41 AM, Adrian Custer wrote:
John,
As a workaround for now, you might be able to use OOcalc to edit the
dBase file directly. I just tried and it works.
Shapefiles come in sets with the same base name and different
extensions. All of the attribute data in shapefiles reside in the .dbf
file. OpenOffice.org's Calc spreadsheet can read and write .dbf files.
So you can open up the .dbf file as well as your data file, sort them
into a similar order, paste your data into the .dbf file and save that
file. Then, when you open your shapefile into uDig, the data will
appear.
Next you're going to want to style your maps according to the
attributes, aren't you? Well we just can't quite to that yet either
but
are getting close.
--adrian
