and works as intended. However it is not a replacement function for the format function provided by d3. But I guess you can use some other formatter to get the effect you want. For example, if you returned just a plain string ‘hello’ instead of d.toFoxed(2), the graph would show ‘hello’ at each coordinate.
This is my ionic platform info:
Cordova CLI: 6.3.1
Gulp version: CLI version 3.9.0
Ionic Framework Version: 2.0.0-rc.2
Ionic CLI Version: 2.1.1
Ionic App Lib Version: 2.1.1
OS: Windows 10 (x64)
Node Version: v6.7.0
Let me know if this helps you.