Hello Anna,
Somewhat unfortunately, the documentation for importing CSV data through the URL is somewhat buried in CODAP’s github site. You can find it here.
There is another gotcha however, namely that CODAP runs as a “secure” site with. As such, the site accessed by the URL parameter must also be secure. So the URL you would use will need to have the ‘https’ prefix as in
https://codap.concord.org/app/?url=https://mywebsite.com/fjdkfjk.csv
Here’s what Jonathan Sandoe has to say in an email to another user:
The issue is that the link is to an insecure http address and CODAP is running with an https URL. Browser rules (quite reasonably) prevent a secure page from loading an insecure file. I tried modifying the URL to “https://xyz.com/Sample.csv” but the server doesn’t appear to support https.
If you are affiliated with the owners of xyz.com in any way you could request that they support HTTPS. It’s probably a good idea for them anyway.
The other network bugaboo that limits CODAP’s ability to read data from a third party sources are same origin policies (CORS). Servers can be configured to restrict the ability of browser apps to read their data. If a CSV file’s server is configured in this way, CODAP will not be able to use it directly.