Latest Contributions by AndrewNarwold

Thanks for the quick reply. Yes, the data is paired. So what I have done is gotten the centroid of both the zip codes in terms of decimal degrees latitude and longitude. Then used an Excel function to convert the difference between these two locations. Not the most elegant of solutions, but it seemed to work. Andrew Narwold Professor of Economics School of Business, University of San Diego 5998 Alcala Park San Diego, CA 92110 619-260-4875 ... View more

I am sorry, I am not sure what this means. ... View more

I ran the split layers tool and I now have separate layers for the parcels for each assessment zone.  But I am still stuck with trying to figure out how I can generalize the polygon that encompasses all of the individual lots within the zone. ... View more

Hi All: So as you can probably tell by my questions and familiarity with some of these topics, I am an advanced beginner at best.  I have not used scripts to date.  What I am trying to do is to derive the boundaries of special tax assessment districts.  I do not have shapefiles for these.  What I have are individual parcels owned by different individuals that have a field that indicates which, if any, special tax assessment they fall under.  I was thinking that if I could identify all of the individual parcels, then I could in essence create the polygon that contains all of those parcels.  I would like to have attributes of the newly created polygon such as the centroid and area.  This is why neither aggregate polygons or dissolve don't work for me.  Dan, your Split layers by attribute should do this if I can figure out how to run it? Thanks Andrew ... View more

Hi Dan: Bear with me here if you will.  I tried using dissolve, and got the multipart polygon.  I can see why that is an issue and it does not solve my question.  So I could certainly split the data into multiple layers based on each tax assessment district.  But what I would get is hundreds of parcels in each layer with the same tax assessment district number, but as distinct polygons.  How would I go about constructing the district itself.  For instance, I would like the centroid of the district or the area of the district. Thanks, Andrew ... View more

Thanks for the advice.  What I am trying to do is create polygons for different special tax assessment zones.  These are not currently geo-coded.  So I am trying to aggregate separate land parcels (not contiguous) into one assessment zone.  I then want to do some geoprocessing with the larger assessment zones.  Does this make sense?  ... View more