The leaflet_Ajax plugin is constantly searching for the default marker symbol located at js/images/marker-icon.png

Although I'm relatively new to Leaflet, I have experience creating interactive maps in the past. Recently, I've been working on a project involving displaying GPS data from a UAV. The UAV transmits location information to a server, which then returns sensor values in geojson format via PHP. To streamline this process, I looked into using Ajax and stumbled upon Leaflet_Ajax. While facing some challenges, I found helpful solutions on platforms like Stack Overflow, such as this thread.

Now, let me walk you through how I'm coding the markers for the points:

var geojsonLayer = new L.GeoJSON.AJAX("myserver/get_geoj.php?stype=particle&sval[min]=2&sval[max]=26",{pointToLayer: redmarkers, onEachFeature: popUp});
function popUp(feature, layer) {
    layer.bindPopup(feature.properties.sensor_v);
},

In addition, I've defined another function called redmarkers that generates red-colored circle markers. Currently, although the data is being successfully loaded from the server, there seems to be an issue with binding the popup or markers to the layer correctly. The code appears to be looking for default marker images at js/images/marker-icon.png, which doesn't exist and consequently results in an error. Even when substituting it with a random image named marker-icon.png, the popup still isn't bound.

I'm unsure of what could be causing this hiccup. Given my limited experience navigating Stack Overflow, feel free to request additional details or point out any shortcomings in my query.

javascriptajaxpluginsmapsleaflet

Answer №1

I managed to solve the issue I was facing, but I felt it was important to share my solution in case someone else encounters a similar problem in the future.

Somehow, I accidentally made edits to my leaflet.js file. I can't recall making those changes, but when I removed a dummy image from the js/images folder (marker-icon.png), the marker still displayed incorrectly. Upon further investigation, I realized that the browser had cached the file, so I disabled caching. However, the console indicated that there was an error related to leaflet.js. By updating the version of leaflet.js (using a backup copy I had saved), the issue was resolved and everything is now working smoothly. Below is my current code:

var geojsonLayer = new L.GeoJSON.AJAX(dataurl,{ 
        pointToLayer: function (feature, latlng) {
            return L.circleMarker(latlng, redRegionStyle);
        },
        onEachFeature: onfeature
    });

function onfeature(feature, layer)
    {
        layer.on(
        {
            mouseover: highlightFeature,
            mouseout: resetHighlight
        });
        layer.bindPopup(feature.properties.sensor_v.toString());
    }

The code now functions perfectly by highlighting features as desired and displaying popups associated with each feature.

I apologize for any inconvenience caused by my initial question, as it turned out to be a simple mistake on my part.

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