[Qgis-user] Create a table of unique values with counts for a field?

[Chrest, David]

I tried Group Stats and for the life of me could not get it to work. I have an airports layer with 75 points and 4 types in the USE field. I want a simple table listing the 4 types of airport uses in 4 records, then a count column giving me a count of each use type. In the Group Stats plugin, I put the Use field in Rows and the count function in value. The Calculate button is grayed out and I can't do anything. I tried different combinations and nothing worked. Not sure what to put in the Columns box. Everything I tried still gave me a grayed, unusable Calculate button. Anita Graser's tutorial at http://anitagraser.com/2013/02/02/group-stats-tutorial/ just shows two examples that are nothing like what I am trying to do. What exactly am I doing wrong?

 

From: carlos.psig at gmail.com [mailto:carlos.psig at gmail.com] On Behalf Of Carlos López PSIG
Sent: Wednesday, November 13, 2013 9:55 AM
To: Chrest, David
Cc: List QGIS user
Subject: Re: [Qgis-user] Create a table of unique values with counts for a field?

 

Hi David,

You can use the "Group Stats" plugin.

 

Regards,

 

 




 <http://www.psig.es> 

 

Carlos López Quintanilla


www.psig.es

carlos.lopez at psig.es <mailto:carlos.lopez at psig.es> 
+34 699.680.261

 

 

2013/11/13 Chrest, David <davidc at rti.org>

Is there a straightforward way to create a frequency table of a field? To get a list of all the unique values and the counts for each of those unique values for a field in a table, attribute table?

 

David Chrest

Research GIS Analyst

RTI International

3040 Cornwallis Rd, PO Box 12194

Research Triangle Park, NC  27709-2194

 


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