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Questions tagged [geocoding]

Use when converting street addresses into spatial data that can be displayed as features on a map, by a reference dataset or locator.

http://en.wikipedia.org/wiki/Geocoding

CartoDB users may be surprised to see what they call georeferencing referred to as geocoding on this site. This is because the large majority of the GIS community use georeferencing in a quite different sense and refer to what CartoDB calls georeferencing as geocoding. There has been a Meta discussion which led to the creation of as a synonym for to address this terminology: Tags with multiple definitions and conflicting use considering site convention

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What's the easiest way to do a one-time mass geocode? (580,000 US addresses)

I am working on a civics related project and I need to be able to display all the properties in the City of Philadelphia on a map, so I'll need to get the latitude & longitude for all 580,000 properties. (Only once) Most APIs like Google/Yahoo have…
Tobias Fünke
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How does IP geocoding work?

I'm trying to understand how using each part of an IP address influences the accuracy of geocoding. For example, if 15.201.xxx.xxx is used instead of 15.201.123.xxx what is the approximate distance in KM? I'm using the IP2Location Lite database to…
djq
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Should I consider any other geocoding services?

I need to do geocode lookups so that I can show members of my website other members who are in their vicinity. My approach will be to obtain their latitude and longitude from their mobile device and then do a proximity calculation using the…
Jim
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How to scrape addresses from a web page for geocoding purposes?

I am trying to get addresses from a web page for mapping purposes. I know I could copy and paste the addresses into an Excel file and geocode them but I was wondering if there was any faster way to get the address from a web page and create a point…
Raj
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Geocode from mile marker/milepost to latitude/longitude?

I have a dataset that describes a few million incidents along Texas roadways. The vast majority of incidents only list a highway name and a milepost. For example, milepost 120 on I-20 or milepost 263 on US 60. How would I convert these…
Aren Cambre
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Suggestions for Geocoding Messy, Inconsistent, Single-Field Addresses?

I have nine spreadsheets containing information about a total of 33,401 unique events in the greater Chicago area. I have been asked to geocode all of these, if possible, and I am certainly no stranger to geocoding. However, the location information…
nmpeterson
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Geocoding Levels - zip code versus block face

I'm looking at some massive data, most of which has been geocoded to the block face (front of the building) level, while some of which has been geocoded to the zip code level (less accurate), giving me a lat/long pair for every sample. When we run a…
Coffee_Bean
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Quickly plot 600+ Post Codes in ArcView 9.3

I have 613 post codes covering the UK, stored as an Excel file. I need to plot them - preferably all at once - in ArcMap (ArcView, 9.3). The post codes are 5 figures (e.g. BT19 6). Is there a quick way of doing this? Currently I'm using Arc's search…
the_bonze
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Has MaxMind's GeoLiteCity IP geocoding database been reduced in accuracy?

I took a copy of MaxMind's free city-level geocoding database a year or so ago, and the file size was roughly 30MB. Checking their site again today (July 2012), the equivalent file is now only 17MB, approximately half the size. I cannot find any…
Drew Noakes
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Geocode table with addresses or lat/lon

I am trying to set up a process to map locations to a street centerline by either an address or or by lat/lon (if no address exists). Using ArcGIS Pro 3.0.x I have created a geocoder that only uses the Street Address Role to geocode locations -…
shoman24v
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Geocoding with noisy addresses

I have addresses that are somewhat noisy since they have been entered by humans. What this basically means is that in most cases the addresses make perfect sense, but in other cases it can something such as Right door on 2nd floor, MegaMall, 2100,…
Carl Rynegardh
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How to geocode IP addresses at finer resolution than the city level?

I have tried several Geocoding IP API or tools but found that the Lat/Long output is same for all addresses in the same city, which could not meet my needs. Can anyone suggest a better way to geocode IP addresses at a higher resolution?
Juny
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Why are there missing values in the American National Standards Institute (ANSI) Codes for States

On the US Census Website there is a list of American National Standards Institute (ANSI) Codes for States, the District of Columbia, Puerto Rico, and the Island Insular Areas of the United States? The first three rows of the table read: Alabama …
vy32
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Return street address or lat/lon coordinates from assessor's parcel number?

In the U.S., in any arbitrary state and county (subject to availability — see diagram and description), I want to: start with: state county APN (Assessor's Parcel Number) and return: a physical street address (preferred) or latitude longitude…
Mowzer
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Geocode with csv file does not work

I'm trying to map data that I uploaded with an csv file. Originally this data set only included the country code, e.g. BD, for Bangladesh. I tried to geocode it by admin region and selected the column where the country code is stored. It gives me…
Adam Abu Khamis
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