Latest Contributions by MichaelWeigel

‎11-07-2019

I guess I'm envisioning each polygon having a border of all the surrounding zip codes. So, if zip code 11111 was adjacent to the four other polygons, the new polygon would be made up of all five of those ZIP code areas. (11111 would also be part of the new polygons resulting from the other four ZIP code areas as well). The idea would be to be able to connect the ZIP+adjacent file to other point shapefiles and do spatial joins based on the points showing up in a certain ZIP code areas as well as all those ZIPs directly adjacent to them. Generating a list of adjacent ZIP codes in a table could prove to be helpful: I suppose I could just use a join/relate from there, although I'm not sure how that would work with doing spatial joins based on a separate point shapefile later in the process. Appreciate the response! Hope that clarifies what I'm envisioning a bit... this seems like it'd be simple enough to do, just still learning the software and where to get queries answered. Would love to know what you (or anyone else) would advise! -Michael

‎11-07-2019

Good morning! For economic analysis purposes, I'm hoping to utilize an existing polygon shapefile I have of all ZIP codes in the United States to create a new shapefile with polygons for all zip codes and any directly adjacent zip code areas. The total number of polygons shouldn't at all change, they should just each be larger and overlapping. Is this possible to do within ArcMap? If not, what are some steps I could take to create something similar? Feel free to ask for clarification if any of that doesn't make sense, and I apologize if that's a pretty basic question. Any advice is appreciated! -Michael

‎02-24-2019

My apologies if this turns out to be a fairly basic question to answer: I have a .csv file of approximately 6000 rows that comprise (among other data columns) city names accompanied by latitude and longitude values (see photograph attached). I've successfully managed to convert the XY data to lines within ArcMap; however, the number and density of lines makes it difficult to interpret these results in any meaningful way. I'd like to find ways to edit the line symbology, density, or color based on how many repeat instances of identical destinations are within the dataset. Some specific examples of changes I'd like to experiment with: Color changes based on direction: lines begin red at their starting cities and end up green Thickness/density of lines based upon frequency of occurrence: if there are 60 or so instances of los-angeles-ca to new-york-ny, it should be much more noticeable than a single instance of movement between tiny cities (if there is a way to make those small lines disappear, that'd also be interesting to me) Gross/net flow: to further clean up the data presentation, is there a way to have ArcMap take instances of movement in opposite directions between two cities and reduce them to either gross flow (where density is based upon total movement between the two cities) or net flow (based upon taking the smaller total from the larger)? That could be a way to simplify the data visualization further I believe the solutions to what I'm looking for can be found by right-clicking on the mapped data lines and accessing Properties > Symbology, but I don't know which specific steps to take beyond that. I appreciate any and all advice that can be given on this issue, or any additional suggestions on interesting ways to present this data. Thanks in advance for your time.

‎11-28-2018

I converted the dbf to an Excel file and changed the data type from "text" to "number" for the relevant LAT and LONG columns. However, when I attempt to perform the 'Display X Y Data' operation, I'm now only given the option of using the ID field (see picture). This remains true whether I add the data as an Excel doc or as a dbf. I have no clue what might be causing this issue, but would definitely like to rectify it. Thanks so much!

‎11-27-2018

Very helpful, thanks so much! One minor question though about that editing process: Do I need to convert the .dbf file into an Excel format first to change the data type? I would've hoped there would've been an easy method to make that change within ArcMap, but it doesn't appear to be very obvious at first glance. I apologize if that's a basic question; I'm rather new to this program! Thanks again, Michael

‎11-27-2018

I have a series of datafiles of all place names within several different countries saved as .dbfs that I'd like to display in ArcMap. Each row contains an ID as well as a latitude and longitude value; however, whenever I attempt the conversion ArcMap doesn't allow me to select the corresponding lat/long columns within the 'Display X,Y Data' action window. I've attached one of the relevant .dbfs and a screenshot of the issue to assist anyone who may understand this issue better than I. I've skimmed through several online help files on this topic, but don't fully understand where the issue lies and/or what steps I can take to rectify this issue. Any advice is appreciated, thanks in advance.

‎11-25-2018

I'm currently about 2 months into a trial of ArcGIS that I downloaded through a code found in the back of a copy of a book called "Getting to Know ArcGIS" purchased via Amazon. I recently had a hard drive crash on my laptop and switched to a newer model. I was able to preserve all of my files, but no downloaded programs were able to be transferred. What steps should I take to redownload the software onto my laptop? I already used the download code, so I fear that the website won't allow me to download the software to multiple devices. I apologize if this is an obvious question, but thank you in advance for any helpful advice that can be offered.

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Date Last Visited	‎11-11-2020 02:25 AM

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Latest Contributions by MichaelWeigel

Re: Can ArcMap create new polygon shapefiles based on the old polygon + all adjacent polygons to the original?

Can ArcMap create new polygon shapefiles based on the old polygon + all adjacent polygons to the original?

'XY to Line': Edit Symbology based on Counts

Re: Issue with conversion of .dbf file into X,Y coordinate data for ArcMap?

Re: Issue with conversion of .dbf file into X,Y coordinate data for ArcMap?

Issue with conversion of .dbf file into X,Y coordinate data for ArcMap?

How should I redownload my free trial of ArcGIS software after switching to a new laptop?