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Leaflet polyline precision loss on zoom out


Leaflet polyline precision loss on zoom out

By : erberg
Date : October 23 2020, 08:10 AM
This might help you The issue lies in the Leaflet.PolylineOffset plugin, I have created a new pull request which hopefully fixes it or at least serves as a basis to a better solution. https://github.com/bbecquet/Leaflet.PolylineOffset/pull/21
code :


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Unwanted polyline extension when zoom in and disappears on zoom out on android Map

Unwanted polyline extension when zoom in and disappears on zoom out on android Map


By : Sai Kiran
Date : March 29 2020, 07:55 AM
I hope this helps you . I solved this: it's a bug from Google. We must filter some close points within 1 or 2 meters.
Polylines appearing on map where they shouldn't
Double comparison precision loss in C#, accuracy loss happening when adding subtracting doubles

Double comparison precision loss in C#, accuracy loss happening when adding subtracting doubles


By : ztc
Date : March 29 2020, 07:55 AM
will help you Take a look at the MSDN reference for double: https://msdn.microsoft.com/en-AU/library/678hzkk9.aspx
It states that a double has a precision of 15 to 16 digits.
How to draw polyline perpendicular to another polyline using Leaflet

How to draw polyline perpendicular to another polyline using Leaflet


By : Miran PM
Date : March 29 2020, 07:55 AM
Does that help No, Leaflet has no equivalent.
You'll have to resort to a geodetic utility library for this kind of calculations. See cheap-ruler, geographiclib and Turf.js.
React-leaflet custom components, how to extend Polyline from Leaflet?

React-leaflet custom components, how to extend Polyline from Leaflet?


By : AaronSteel
Date : March 29 2020, 07:55 AM
around this issue I don't think you need a custom component for this. You can simply add a click handler for each polyline that will return it's id. See this example:
code :
render () {
  const position = [this.state.lat, this.state.lng]
  return (
    <Map center={position} zoom={this.state.zoom}>
      <TileLayer
        attribution='&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
        url='http://{s}.tile.osm.org/{z}/{x}/{y}.png'
      />
      {this.state.polylines.map(polyline => 
          <Polyline
            key={polyline.id}
            positions={polyline.coords}
            onClick={() => alert('clicked ' + polyline.id)}
            />
        )
      }
    </Map>
  )
}
Pointers on how to use leaflet's polyline in reactjs & react-leaflet

Pointers on how to use leaflet's polyline in reactjs & react-leaflet


By : user2812785
Date : March 29 2020, 07:55 AM
may help you . I am very new to React and leaflet. I am trying to plot a set of latitudes and longitudes that is available in an object on a map in React using leaflet. Any pointers on how this can be done will be helpful. , You can store the data in the state like this:
code :
state = {
    ...
    data: [
      {
        from_lat: "12.92415",
        from_long: "77.67229",
        id: "132512",
        to_lat: "12.92732",
        to_long: "77.63575",
      },
      {
        from_lat: "12.96691",
        from_long: "77.74935",
        id: "132513",
        to_lat: "12.92768",
        to_long: "77.62664",
      }
    ]
  };
<Map
      style={{ height: "100vh" }}
      center={position}
      zoom={this.state.zoom}
    >
      <TileLayer
        url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
        attribution='&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
      />
      {this.state.data.map(({id, from_lat, from_long, to_lat, to_long}) => {
        return <Polyline key={id} positions={[
          [from_lat, from_long], [to_lat, to_long],
        ]} color={'red'} />
      })}
    </Map>
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