Menu Sidebar

National Park System

If you look at all the National Parks across the US, there are about 60:

The National Park Service manages many more “park units” other than just the officially-designated “National Parks.” These include things like National Lakeshores, National Monuments, National Parkways, National Preserves, etc. In total there are about 400 units across the US:

The National Park Service has an open data portal where you can get an API of all the locations of these parks, so I took that data feed and put it into ArcGIS Web AppBuilder to create an application that allows you to filter the map by park types.

NPR, Where are the Landing Pages for Podcast Episodes?

I was just trying to share a single episode of NPR’s Podcast “How I Built This” with a friend. When I searched for the episode, no authoritative episode landing page showed up. Odd … so I go to the podcast general show page. For each recent episode you have options to:

  • Listen (on same page)
  • Add to Listen Queue (on same page)
  • Download (Direct link to MP3 via Podtrac website)
  • View a transcript

Well-run podcasts should always have an episode landing page, where you could go if you’re linking to an episode, find show notes, and also be the place for search engines to return if a user is searching for a particular episode. This last case, SEO, is particularly interesting in NPR’s case, because if you do search for this episode, you can see that many other websites are grabbing the users that should be landing on NPR’s site.

NPR, I want to share your podcast episodes, so please provide episode permalink landing pages!

Using the R-ArcGIS Bridge in Jupyter

I was sitting in a presentation a few weeks ago on the R-ArcGIS bridge and I had a question: “Can I use the R-ArcGIS bridge in my Jupyter Notebook?” When I asked one of the presenters if this would be possible, he said, “Yes”.  So, after the presentation, I set out to get the R-ArcGIS bridge running in Jupyter.

Installing the ArcGIS-R Bridge

The first thing I did was install the R-ArcGIS bridge. I installed it using ArcGIS Pro by following the installation instructions. I am currently using R-3.4.2 and arcgisbinding ‘’. I can verify this by going to the Geoprocessing tab in the Options section in ArcGIS Pro.

Cloning My arcgispro-py3 Environment

I did not want to break my arcgispro-py3 conda environment (the default ArcGIS Pro Python environment) so the first thing I did was clone the environment. I named the cloned environment arcgispro-r. I did this from the command line using

conda create --name arcgispro-r --clone arcgispro-py3

Switching Environments

Next, I switched to the cloned environment by deactivating the arcgispro-py3 environment and activating the arcgispro-r environment.

activate arcgispro-r

Installing R-Essentials

Then, I installed r-essentials, a bundle of over 80 of the most used R packages created by the Anaconda team.

conda install -c r r-essentials

Running arcgisbinding in Jupyter

After I installed r-essentials, when I launched my Jupyter Notebook, I had the option to create a Python or an R notebook.

I created an R notebook. To test whether the ArcGIS-R bridge is installed and accessible to my notebook, I loaded the arcgisbinding package and checked the product version number and there it was, package version ‘’, the same one I see listed in ArcGIS Pro above!

But Does It Work?

Yes, I can use the arcgisbinding package to read spatial data into R! In order to test whether I could read in data, I used to read in a point feature class of seagrass data. I was also able to use to put that feature class into a dataframe.

I shared my sample notebook on GitHub at the repo arcgisbinding-in-jupyter. I am interested to know if there is anyone else out there who has tried this or is interested in using R, ArcGIS, and Jupyter. If you are, let me know!

~ A guest post by Gregory Brunner

Inline Footnotes WordPress Widget – Version 2 Released

Version 2.1.0 of one of the WordPress plugins that I manage, Inline Footnotes, has been released.

This new version:

  1. Fixes mobile issues by showing the footnote content in the center of the screen when on mobile.
  2. Allows `background_color` attribute in the footnote tag.
  3. Adds option to show footnote on hover
  4. Has minified JS/CSS files

To facilitate the first item above, I had to change how the show/hide behavior of the footnotes works a little bit. After this update, if you click a second footnote open while a footnote is already open, the first one will close (previously both would stay open).

Here are some of the new features in action (The third footnote is colored “red” with the new “background_color” attribute):

Please check out the plugin over here.

2017 Lambert St. Louis Airport Passenger Data

The St. Louis Airport recently released the 2017 information on passenger data. I really appreciate that they are releasing this information, but would love if the data was in a better format for working with this. To help others use this data, I’ve created GitHub repository where you can download this data. I’ve also created a few graphs based on this live data.

The data is here:

And I created a few graphs here:

It’s not a lot of data. I would love if the Airport released other data, like:

  1. Carrier information on how many flights are in/out of the airport
  2. How many flights per date
  3. Information on revenue sources
  4. How many flights to each destination?
Newer Posts
Older Posts

Gavin Rehkemper

JavaScript, WordPress, and GeoDev