React leaflet marker icon not showing

React Leaflet Marker Icon Not Showing

When using React Leaflet, if the marker icons are not showing up, it could be due to a few reasons. Here are some possible explanations and solutions:

1. Missing icon library/import: Ensure that you have imported the necessary icon library or components. React Leaflet does not include icons by default, so you need to import them separately.

{`import { Icon } from 'leaflet';
import 'leaflet/dist/leaflet.css';
import L from 'leaflet';
import markerIcon from 'leaflet/dist/images/marker-icon.png';
import markerIcon2x from 'leaflet/dist/images/marker-icon-2x.png';
import markerShadow from 'leaflet/dist/images/marker-shadow.png';

delete Icon.Default.prototype._getIconUrl;
Icon.Default.mergeOptions({
  iconRetinaUrl: markerIcon2x,
  iconUrl: markerIcon,
  shadowUrl: markerShadow
});`}
    

In the above example, we import the necessary files from the leaflet package and set them as the default icon options.

2. Proper usage of marker components: Make sure you are using the appropriate marker components provided by React Leaflet, such as Marker or CircleMarker. Here’s an example of using the Marker component:

{`import { Map, Marker, TileLayer } from 'react-leaflet';

const ExampleMap = () => {
  const position = [51.505, -0.09];
  
  return (
    
  );
};`}
    

In this example, we use the Marker component and pass the position of the marker as a prop.

3. Check map container size: Ensure that the container element of the map has a specified size. If it does not have a defined width and height, the map and markers might not be visible. You can set the size using CSS or inline styles.

{`

  {/* Map component */}
`}
    

Here, we set the width to 100% and height to 400px, but you can adjust these values according to your requirements.

By following these troubleshooting steps and examples, you should be able to resolve the issue of marker icons not showing up in React Leaflet.