Latest Contributions by KevinWilliams

‎08-05-2014

Sorry for the delayed response, but my meeting was pushed back until today. Just to put this question out of its misery... I made a copy of her feature class, changed the 'name' field in the copy to her specs, then merged the original feature class with the copied feature class. This allowed her to query based on two separate 'name' fields. For example, one feature class with several polygons. Each polygon had a name ranging from 100 - 410; each polygon is now duplicated within her feature class, but the 'name' can now be identified by 100, 101, etc. but also 1000. Hopefully that makes sense for everyone, because while this was not my preferred method, it seemed to be exactly what she wanted.

‎07-24-2014

My apologies for not presenting the question as it should have been, but I was simply relaying the information given to me. Like all of you, my mind immediately went in several directions. Unfortunately, working with someone who does not understand Arc and not having a chance to see what she was referencing made comprehending the desired outcome a bit difficult. I appreciate all the responses, and as I mentioned, I suggested several options, but was rebuffed. After a lengthy phone conversation and getting full details, the answer should be overly simplistic. My understanding is... she has one feature class consisting of 67 polygon features. She categorized these based on a single attribute. She needs to "group" some of these features (for example: Police Beats 100, 101, and 102) into a single category within the main feature class. She wants to maintain the single feature class, but have less categories to work with. I will know for certain when I meet with her tomorrow, but I believe all she wants is to group values using the symbology tab. My only concern is explaining to her that when someone else adds this feature class to a new mxd, the symbology will not be reflective of her "grouping".

‎07-24-2014

I'm trying to help someone with their mxd and I'm not sure why I can't recall how to do what is needed. I am attempting to "group" polygons within the mxd. They currently have several polygons, for instance police beats, but would like to group them by a certain attribute for later use. The catch is that they don't want to remove them from their current gdb into a separate feature dataset or feature class, which leads me to grouping them within the mxd. Unfortunately, this eliminated selecting by attribute and creating a new layer. Is there an alternative method to "grouping" certain polygons based on an attribute within the mxd?

‎12-07-2013

Sorry for the ridiculous question. I continually thought it was in the division of rows, so I looked into my fields a little closer. Turns out, Row[0] and Row[1] were Double and Row[2] was Long. Fixed that aspect and the code works as is.

‎12-07-2013

I tried your suggestion, but still no luck. However, looking at the ArcGIS 10.1 resource documentation, it should be as shown. I can't help but think it has something to do with the division of the rows... row[2] = row[1]/row[0].

‎12-07-2013

I'm trying to use an update cursor to calculate a field. Basically, I'm trying to avoid division by 0 by looking in row[0] and see if it's 0. My code thus far is: import arcpy fc="C:/Temp/crimeGrid.shp" fields="'MEAN_GRIDC', 'SUM_Join_C', 'crimeRate') with arcpy.da.UpdateCursor(fc,fields) as cursor: for row in cursor: if (row[0] > 0): row[2] = row[1]/row[0] else: row[2] = 0 cursor.updateRow(row) Any ideas or help on what I'm missing? I presume that it's the calculation aspect of my code.

‎10-04-2013

Perfect, Thanks! I wasn't quite expecting something as detailed as a video demonstration when I asked that question.

‎10-04-2013

I was hoping someone could guide me to an easy to understand tutorial on areal interpolation (at least I believe this is what I'm looking for). I'm attempting to distribute Census population numbers from a Census tract into a fishnet grid. I'm open to any other ideas or options, and all feedback is greatly appreciated.

‎10-05-2010

Please help.... I am a complete novice with any type of programming. I have my base map (with Bing map tiled layer), my accordion content pane with appropriate headings. I have multiple dynamic map service layers that I have set the opacity to 0.1. My issue now is that I need to display various information "onclick" to the accordion content pane layers. More importantly, I need to display (in the content pane) the distance from the point clicked to my dynamic layers. For example, if I click a spot on the map, and my dynamic layers are population and fault lines, I need to be able to display if there is a population greater than X within 1 mile, as well as how far the nearest fault line would be. I have found various examples but nothing recent enough or simple enough for a complete novice. Any and all suggestions would be appreciated.

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My Ideas

Latest Contributions by KevinWilliams

Re: Grouping polygons

Re: Grouping polygons

Grouping polygons

Re: Update Cursor to Calculate Field

Re: Update Cursor to Calculate Field

Update Cursor to Calculate Field

Re: areal interpolation

areal interpolation

Identify/Query with results in Accordion Content Pane