typings and versions of D3

[adamdavi3s]

Dear All,

Brand new to developing for PBI and pretty new to JS / D3 but have a few extensions written and running for qlikview, but this is probably a basic question.

I wanted to try and convert one of these to work with PBI but I get errors and I suspect as using the typings thing with PBI means I have the latest version (4) or D3?

I know the extension works on v3, so can I somehow use this instead? I tried packaging up the d3v3.js and loading that but obviously it didn't work.

I assume typings is used so that you don't have to package the additional js files and everyone is working on the same version?

[v-chuncz-msft]

@adamdavi3s,

Based on my research, you may download the external library of your choice and add the library to your tsconfig.json file.

https://github.com/Microsoft/PowerBI-visuals/blob/master/Tutorial/ExternalLibraries.md

[adamdavi3s]

Hi Sam,

Thank you, I am currently beating my head on the desk trying to figure this stuff out!

I thought developing for Qlikview was bad but this seems way OTT and undocumented.

I had tried adding it, but then just got a bunch of D3 namespace doesn't exist kind of errors. I've figured out (I think) that some of the typings D3 stuff is just a bit different so for example D3.event.foo becomes (d3.event as event).foo etc

I did also find this blog which seems useful as he's managed to store the D3 extension (Rather than library) as separate code and then loads it, however I suspect it might give the same issues.. not had chance to test it yet!

http://blog.jongallant.com/2016/09/powerbi-custom-visual-from-existing-d3.html