Is it possible to do data-driven styling?

[chriswhong]

Maputnik is awesome, it perfectly fits our use case here at the NYC Department of City Planning where we are consuming MVTs from a self-hosted carto instance, but do not have an editor!

Is is possible to do data-driven styles? I am only seeing the option to pick a single color for a given layer. Thanks, and thanks for making this tool!

[muesliq]

To my knowledge it is not, yet you can always edit a layer's JSON by hand, adding those missing features by hand.

[chriswhong]

Thanks!

…

On Fri, Feb 3, 2017 at 9:39 AM, Helge Fahrnberger ***@***.***> wrote: To my knowledge it is not, yet you can always edit a layer's JSON by hand, adding those missing features by hand. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#96 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABv7XCiy5M34VpeQyj56T1Z4lkn3E161ks5rYzwZgaJpZM4L1l4g> .

[orangemug]

This is a feature I'd also be interested in. Out of interest has anybody thought about what the UI might look like for this?

[muesliq]

Probably similar to the stop functions which look like this:

Just that

• the fields "property" and "type" above the stop lines would be needed
• The "stops" fields wouldn't be numbers only

So it would look something like this:

Color              Property: [____________]
                   Type:    [exponential ▼]
        [DEL] [____________] [____________]
        [DEL] [____________] [____________]
                                 [Add stop]

What makes things really complicated is the need to be able to combine zoom functions and data driven styling, as in this example:

'line-offset': {
  	  'property': 'NAME',
  	  'type': 'categorical',
  	  'stops': [
  	    [{zoom: 10, value: 'LineA'}, 3],
  	    [{zoom: 10, value: 'LineB'}, 0],
  	    [{zoom: 10, value: 'LineC'}, -3],
  	    [{zoom: 14, value: 'LineA'}, 6],
  	    [{zoom: 14, value: 'LineB'}, 0],
  	    [{zoom: 14, value: 'LineC'}, -6]
  	  ]
  	}

I'm not sure what the ideal UI for such complexity would be. Maybe JSON is best for that, anyway.

[orangemug]

@pjsier added this as a part of #161