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I want to display some text below each point on a linestring with Openlayers. The text would include, for example, the coordinates of the point, plus some other information.

I have managed to add a style to these points, but so far only the same style to all.

https://jsfiddle.net/wainwrightalex/6qbpqmme/8/

I considered creating a new feature for each point, but I would like to avoid this if possible, so I can still use ol.interaction.Modify to edit the linestring.

Is it possible to somehow style these points individually? Or add individual text in some other way?

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You can use the geometry config option of ol.style.Style and use a function to create a point at every vertex (http://openlayers.org/en/v3.5.0/apidoc/ol.style.html#GeometryFunction)

See also this blog post for some related information: http://boundlessgeo.com/2015/04/geometry-based-styling-openlayers-3/

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