i can't change a clolor of markers or circles?

[4pmaster]

My enviroment is ubuntu 14.04/anaconda/jupyter notebook.
I've try to do someting with colours of circlemarkers and markers but nothing changes, colour still blue.
What i can do to fix it?

Thank you!

[mxndrwgrdnr]

+1 for this issue. I'm seeing the same thing.

[kylehounslow]

Same for me. Would be nice to have colours not hard-coded as #0033FF

[martinRenou]

Unfortunately it is not possible to change color of markers in leaflet. But you can change color of a CircleMarker with my_circle_marker.color = "red" or my_circle_marker.color = "#B4D455", it works fine, at least on master.
Keep in mind that when you change the color with the color attribute it will only change the border color of the circle, if you change the color with the fill_color attribute it will fill the circle with the given color, but you would have to change the fill_opacity if you want to see it clearly (fill_opacity is equal to 0.2 by default)

[deeplook]

Unfortunately it is not possible to change color of markers in leaflet.

Why can't there be something as simple as in https://github.com/python-visualization/folium:

[martinRenou]

Good point. We should look at what is done in Folium. If you feel like doing it please go ahead @deeplook :) That'd be awesome

[martinRenou]

Folium uses https://github.com/lvoogdt/Leaflet.awesome-markers

[OliverEvans96]

Awesome icons only seem to support a fixed set of colors, is that true? I'm getting:

TraitError: The 'marker_color' trait of an AwesomeIcon instance must be any of ['white', 'red', 'darkred', 'lightred', 'orange', 'beige', 'green', 'darkgreen', 'lightgreen', 'blue', 'darkblue', 'lightblue', 'purple', 'darkpurple', 'pink', 'cadetblue', 'white', 'gray', 'lightgray', 'black'], but a value of '#fde725' <class 'str'> was specified.

Have there been any updates on this issue since last year? It would be great to be able to use arbitrary colors to represent a continuous variable at discrete locations with markers + a colorbar.

Thanks,
Oliver

[martinRenou]

You are right, you can only use a set of colors, simply because those icons are coming from image files.

We could add a new kind of marker that accept any kind of RGB color as input. It would indeed be a nice feature.

[giswqs]

I was also looking for a way to change marker colors. This would be a nice feature to add.

[martinRenou]

Currently, the only way to change marker colors is by using custom icons, see https://ipyleaflet.readthedocs.io/en/latest/api_reference/icon.html. You can also use the FontAwesome icons, which allows to change the color: https://ipyleaflet.readthedocs.io/en/latest/api_reference/awesome_icon.html

[giswqs]

@martinRenou Many thanks for the info! Will try it out.

[deeplook]

I've tried changing the color of an AwesomeIcon, but in vain. Only if I reload the current browser page the new color is shown, weird. And while a CircleMarker can change color it cannot be moved on the map.

[martinRenou]

@deeplook https://ipyleaflet.readthedocs.io/en/latest/api_reference/awesome_icon.html#interactions

And while a CircleMarker can change color it cannot be moved on the map.

Can you provide a code sample that replicate the issue?

[deeplook]

There is no on_move():

[martinRenou]

Indeed. In LeafletJS the CircleMarker is not a Marker. I opened an issue for a couple of years ago but I don't think they took it into account.

You can still observe the location property though marker.observe(callback, 'location')

[deeplook]

Yes, but I cannot move the CircleMarker with the mouse... ;)

[martinRenou]

I guess it's a limitation of LeafletJS, we cannot do anything about it in ipyleaflet