d3：如何将外部CSV文件加载到数据中？

Question

I am trying to learn how to load external data (in my computer) into d3 code.

However, I can't load data just as the tutorial do d3.csv("data.csv", type, function(error, data) .

I tried to attach the URL like d3.csv("users/file/data.csv") but it didn't work.

Please let me know how to load the CSV file that is located in my computer.

Answer 1

The trick is that your browser needs to be able to access the file using the URL that you provide, so if you host your d3 code on a web server, then you have to host the data.csv as well.

If you use a relative path, then the path is relative to your HTML file.

Try using

d3.csv("data.csv", type, function(error, data)]

but make sure that data.csv is in the same location as the HTML file that you are using for your HTML.