haotu : an open lab notebook

2016/02/03

add unique id to attributes table ArcMap 10.3.1

Filed under: arcmap, Python — Tags: , , , — S @ 08:39

This requires a bit of Python scripting, but it is simple. See here for the original post

1. Add a numeric field (column) to attributes table (the column in blue is an example of what I want to produce):

uniqueid1

2. Right click on the new field and select field calculator.

uniqueid2

3. Make sure parser is Python and type is Numeric. In the code box put in:

counter = 100000
def uniqueID():
 global counter
 counter += 1
 return counter

and in the field = box make sure to give the function name

uniqueid()

in this example.

uniqueid3

4. Then it should produce a unique id for each element in the table. Note that you can change the starting number (1000000) and the increment number (1).

uniqueid4

 

Advertisements

Leave a Comment »

No comments yet.

RSS feed for comments on this post. TrackBack URI

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Blog at WordPress.com.

%d bloggers like this: