I’m a CIO. That means a typical day can involve a range of activities: responding to data calls for security audits, reviewing SOC2 reports of prospective platform vendors, managing subscriptions of existing vendors, handling GDPR requests, ensuring data from corporate systems is meaningful and relevant for our internal stakeholders, attending meetings of various sorts. Somewhere…
Tag: PostGIS
Return on Non-Investment
Yesterday evening, I had the pleasure of participating in a panel discussion on Clubhouse, hosted by Todd Barr and Jordan Cullen, and including Will Cadell of SparkGeo. Clubhouse seems to be a really convenient venue for setting up such a forum with low barriers to entry, so that was enjoyable. The topic of the discussion…
Analyzing Location Change Over Time in PostGIS
Following up on my previous post, I decided to attempt the same analysis in PostgreSQL. The analysis doesn’t make use of any spatial logic itself (yet), but I consider this a PostGIS post because it is using PostGIS geometries. In the past, I have noticed that BigQuery SQL is very reminiscent of that of PostgreSQL,…
Attribute Transfer in PostGIS Using Spatial SQL
Data conflation is a meat-and-potatoes task in most GIS workflows. There are numerous reasons one might need to get data from one data set into another. Perhaps you want to attach a new geometry type to existing attributes or a table. Or maybe you need to pull attributes from one or more data sets into…
Watching COVID-19 Data for Your County with PostgreSQL and Node
I have addressed the topic of triggered notifications a couple of times on this blog previously. I’ve taken the opportunity to apply the technique to a current use case – the ability to get notifications whenever the confirmed count of COVID-19 cases changes in my county or surrounding ones. I am basing this workflow on…
The One About PostGIS
James Fee and I released the next episode of our podcast this week. This month, we are taking a closer look at PostGIS and how you can get started with it. We’re both longtime users and huge fans of PostGIS, so it was fun to dig into it a little. You can check it out…
Refreshing a PostGIS Materialized View in FME
I am following up my previous post with an extremely simple example using FME to kick off the refresh of a materialized view (matview) after a data import. I had never used FME prior to coming to Spatial Networks, but now I’m hooked. I’m having a really hard time finding things it can’t do. As…
Working with Materialized Views in PostGIS
It’s been a few months since I’ve posted, owing mainly to getting my feet under me at Spatial Networks. About a month after I started, the company re-merged with Fulcrum, which had previously been spun off as a separate company. As a result, I’ve gotten to know the Fulcrum engineering team and have gotten to…
Personal Geospatial Workflows, July 2016 Edition
It’s hard to believe, but I last touched upon this topic over two years ago, when my family and I were living in our between-houses rental. One of the goals I had when building our current house was to create a space where I could more effectively work from home. To that end, I have…
Revisiting Two Old Friends: ArcGIS and PostGIS
Back in the dark old days of ArcSDE, when it first started to support PostgreSQL/PostGIS as a back-end data store, I did a series of posts about how to work with it. Of course, working with PostGIS in ArcGIS was a theme of the early days of this blog, through my association with zigGIS. Although it’s…