Custom GeocoderService to search a LabelCollection

CesiumJS
1

I have a collection of labels. I would like to be able for the user to search them using a custom GeocoderService. Has anyone already written this by chance so I don't have to reinvent the wheel? Thanks! Eric

2

I did it -- it's ugly but it seems to work ok :slight_smile:

I'm new to Cesium and js so there are some things that I'm not sure about, if anyone would like to help clean it up that would be great!

1) I faked a Cesium.loadText promise because I don't know how to make my own
2) It could use an exact calculation of bounding box size based on height
3) What's the proper way to deal with meridian/pole boundaries when using the globe?

cheers

Sandcastle:

/**
* This class is an example of a custom geocoder. It provides geocoding by searching inside a LabelCollection.
* @alias LabelCollectionGeocoder
* @constructor
*/

function LabelCollectionGeocoder() {
}

/**
* The function called to geocode using this geocoder service.

3

this version searches through all of the available LabelCollections

http://cesiumjs.org/Cesium/Apps/Sandcastle/?src=Hello%20World.html&label=Showcases&gist=aa773200305ea2ed925402856509bb56

4

wrong link

5

This code is very interesting and almost does what I would like to do. What should I change to your code in order to display also a point to each of the labels you have created?

6

Hi!

Thank you for sharing this. Your example has helped me to achieve custom geocoder that searches adresses from geojson file.

It works perfect but I don't understand completely every variable you used.
What are horizdeg, n/s latitude, n/s longitude, max/min heights etc?
I would be very thankful if you could comment these lines of code.
Anyways, I appreciate your help.

Cheers,
Paula

7

Hi,
I have tried the above code on the given link. But its not working. When i typed a string "SAR for example" it just gives the string "Seraching.." in the search box. I tried to debug the same code on my local. The code never hits the return part. I like to use the same functionality but its not working. Please advice.
what i want to achieve is a user inputs a label in the search and the camera flies to the position.

Thanks in advance. :slight_smile:

8

I think the geocoder might have changed slightly since that post. We recently added support for a new open source geocoder:

And you can see the pull request here:

So that might be a good reference to see how you can build your own.