As an invasion biologist, the process of spatial spread is at the heart of what I do. When I came across this dataset of Walmart store openings since 1962 I couldn’t help but see it as an invasion front which looks a lot like a biological invasion or (albeit slow) epidemic.
The video shows monthly store openings (in red) between 1962 and 2006.
You can get the code I wrote for generating this visualization on my github page.
Very interesting work !
I observe that the new opening are somehow following a “biological” schema: the new openings are closed to the previous ones when I expected to see the first openings in major US cities first.
There was visualization of this dataset on FlowingData: http://projects.flowingdata.com/walmart/
A similar chart just appeared on Mashable:
I wonder if it used your code…
Thanks for the heads up, but I think that vis predates my R implimentation. After I did this I found a few others who had visualized the same data sets using various tools (see the flowing data link above). I would love to see someone take my R code, make improvements and share it, though!
I am having difficulties replicating the post along with the post for and update on bayesian distributions,
this is the error that i get:
Error in png(paste(“plots/”, 1000 + frame, “.png”, sep = “”)) :
unable to start png() device
In addition: Warning messages:
1: In png(paste(“plots/”, 1000 + frame, “.png”, sep = “”)) :
Unable to open file ‘plots/1001.png’ for writing
2: In png(paste(“plots/”, 1000 + frame, “.png”, sep = “”)) :
opening device failed
the error happends in the paste walmart post it happens with the variable year like in:
Could you please help me understand what am I doing wrong? Thank you!
I am guessing that you may not have created a folder called ‘plots’ under your current working directory. If you create that folder, it should work.
I’m glad you found the post interesting.
TOTALLY right! Amazing, thank you so very much, Corey. I will make sure to include your name an refer to your site and work in my lectures!
Thank you, again!
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Thank you for doing this and making the code available! I modified it a bit for my own project – a video to demonstrate the pervasiveness of accusations of child sexual abuse in the Boy Scouts of America throughout the US from 1960-1985 based on the now-released BSA Ineligible Volunteer Files. The video can be found at http://youtu.be/0F8uTZcKBU4 And of course, full attribution is given at the YouTube site. Thanks again!
Very cool. I love seeing code being re-purposed for interesting projects. Thanks for letting me know.
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Loved this… I have been trying hard to find their recent data.. hope i get those and build something similar. Thanks for the idea.