Export to image? about chartkick

[ankane]

Love this idea. The solution should be client-side only, since setting up image processing libraries on the server can be a pain. This sounds like a solid approach: http://stackoverflow.com/questions/3975499/convert-svg-to-image-jpeg-png-etc-in-the-browser

[ankane]

Implemented - https://github.com/ankane/chartkick.js/tree/download

However, it won't work in any version of IE due to security restrictions, so the download button is hidden for IE users. A cross-browser compatible approach would be to setup a public server to convert SVGs to PNGs. This approach would work in any browser but would rely on an external service.

[davidkariuki]

Wow that was fast! I was also thinking about a server-side solution -- maybe using ImageMagick. I haven't had the chance to give it a real try though.

[ankane]

Yeah, I was hoping to get away with a client-side solution for simplicity, but since it isn't cross-browser compatible, a server-side solution makes more sense.

[auzroz]

Looks like the Google Charts API now includes some similar functionality: https://developers.google.com/chart/interactive/docs/printing

[duboff]

Hi,

Is it possible to use this feature in the ruby gem? I couldn't quite figure out how. Do you need to use the JS file from the Download branch since it doesn't seem to be implemented on Master?

[ankane]

Yeah, the branch is pretty outdated, so new features won't be there, but you can just add the file to app/assets/javascripts/chartkick.js and Rails will use it over the one bundled with the gem.

[MatiasL13]

Hi, is possible to integrate the download tree to the new version 1.4.1??

[ankane]

The latest version of Chartkick has a download option.