The 20250217.pmtiles didn't contain any countries names and borders, and any cities at all #401

raphael10-collab · 2025-02-20T09:16:40Z

raphael10-collab
Feb 20, 2025

Hi!

Yesterday I downloaded these PMTiles: https://build.protomaps.com/20250217.pmtiles and the world map didn't contain any countries names and borders, and any cities at all

Today I downloaded these PMTiles: https://build.protomaps.com/20240902.pmtiles
and the map does contain countries names and borders, and cities

This is the index.html I'm using:

<html>
    <head>
        <title>PMTiles MapLibre Example</title>
        <meta charset="utf-8"/>
        <link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/maplibre-gl.css" crossorigin="anonymous">
        <script src="https://unpkg.com/[email protected]/dist/maplibre-gl.js" crossorigin="anonymous"></script>
        <script src="https://unpkg.com/[email protected]/dist/pmtiles.js"></script>
        <style>
            body {
                margin: 0;
            }
            #map {
                height:100%; width:100%;
            }
        </style>
    </head>
    <body>
        <div id="map"></div>
        <script type="text/javascript">
            // add the PMTiles plugin to the maplibregl global.
            let protocol = new pmtiles.Protocol();
            maplibregl.addProtocol("pmtiles", protocol.tile);

            let PMTILES_URL = "protomaps.pmtiles";

            let source = new pmtiles.FetchSource(PMTILES_URL, new Headers({'Content-Language': 'xx'}));

            const p = new pmtiles.PMTiles(source);

            // this is so we share one instance across the JS code and the map renderer
            protocol.add(p);

            p.getMetadata().then((m) => {
              document.getElementById("description").textContent = m.description;
            })


            // we first fetch the header so we can get the center lon, lat of the map.
            p.getHeader().then((h) => {
              const map = new maplibregl.Map({
                container: "map",
                zoom: h.maxZoom - 2,
                center: [h.centerLon, h.centerLat],
                style: {
                  version: 8,
                  sources: {
                    example_source: {
                      type: "vector",
                      // For standard Z/X/Y tile APIs or Z/X/Y URLs served from go-pmtiles, replace "url" with "tiles" and remove all the pmtiles-related client code.
                      // tiles: ["https://example.com/{z}/[x}/{y}.mvt"],
                      // see https://maplibre.org/maplibre-style-spec/sources/#vector
                      url: "pmtiles://" + PMTILES_URL,
                      attribution:
                        '© <a href="https://openstreetmap.org">OpenStreetMap</a>',
                    },
                  },
                  layers: [
                    {
                      id: "water",
                      source: "example_source",
                      "source-layer": "water",
                      filter: ["==",["geometry-type"],"Polygon"],
                      type: "fill",
                      paint: {
                        "fill-color": "#80b1d3",
                      },
                    },
                    {
                      id: "buildings",
                      source: "example_source",
                      "source-layer": "buildings",
                      type: "fill",
                      paint: {
                        "fill-color": "#d9d9d9",
                      },
                    },
                    {
                      id: "roads",
                      source: "example_source",
                      "source-layer": "roads",
                      type: "line",
                      paint: {
                        "line-color": "#fc8d62",
                      },
                    },
                    {
                      id: "pois",
                      source: "example_source",
                      "source-layer": "pois",
                      type: "circle",
                      paint: {
                        "circle-color": "#ffffb3",
                      },
                    },
                  ],
                },
              });
              map.showTileBoundaries = true;
            });

            // we first fetch the header so we can get the center lon, lat of the map.
            p.getHeader().then(h => {
                const map = new maplibregl.Map({
                    container: 'map',
                    zoom: h.maxZoom-2,
                    center: [h.centerLon, h.centerLat],
                    style: 'style.json'
                });
            })
        </script>
    </body

Why ?

Answered by bdon

Feb 26, 2025

That is intentional, because the object at demo-bucket.protomaps.com is not intended to be hotlinked arbitrarily. You should host your .pmtiles yourself and configure CORS.

View full answer

wipfli · 2025-02-20T09:48:19Z

wipfli
Feb 20, 2025
Collaborator Sponsor

Probably because the style changed in v4.

Go to https://maps.protomaps.com/#flavorName=light&lang=en&map=0.88/0/0 and click "get style json"

0 replies

wipfli · 2025-02-20T09:49:44Z

wipfli
Feb 20, 2025
Collaborator Sponsor

You see here the country names and borders are there and you can choose the display language:

0 replies

bdon · 2025-02-21T08:04:49Z

bdon
Feb 21, 2025
Maintainer

I added a compatible NPM versions column to https://maps.protomaps.com/builds/ to make this clearer. Any other suggestions?

0 replies

raphael10-collab · 2025-02-25T13:10:33Z

raphael10-collab
Feb 25, 2025
Author

If I understand correctly the versions of compatible npm are 4 and 5 : https://maps.protomaps.com/builds/

My npm version is 10.9.2 :

root@WorldMap:~# npm version
{
  npm: '10.9.2',
  node: '22.14.0',
  acorn: '8.14.0',
  ada: '2.9.2',
  amaro: '0.3.0',
  ares: '1.34.4',
  brotli: '1.1.0',
  cjs_module_lexer: '1.4.1',
  cldr: '46.0',
  icu: '76.1',
  llhttp: '9.2.1',
  modules: '127',
  napi: '10',
  nbytes: '0.1.1',
  ncrypto: '0.0.1',
  nghttp2: '1.64.0',
  nghttp3: '1.6.0',
  ngtcp2: '1.10.0',
  openssl: '3.0.15+quic',
  simdjson: '3.10.1',
  simdutf: '6.0.3',
  sqlite: '3.47.2',
  tz: '2024b',
  undici: '6.21.1',
  unicode: '16.0',
  uv: '1.49.2',
  uvwasi: '0.0.21',
  v8: '12.4.254.21-node.22',
  zlib: '1.3.0.1-motley-82a5fec'
}

Does it mean it does not work? I do hope I'm wrong...

0 replies

wipfli · 2025-02-25T13:30:37Z

wipfli
Feb 25, 2025
Collaborator Sponsor

Can you create a jsbin or stackblitz or similar with the problem you are facing? The above code snippet could be a starting point...

0 replies

raphael10-collab · 2025-02-25T15:50:21Z

raphael10-collab
Feb 25, 2025
Author

May I keep summing everything up here, instead of duplicating information elsewhere?

The issue is the following:

I'm using this index.html https://gist.github.com/wipfli/7062a865c89e36fa74b0701289c3c6c8#file-index-html
to which I added <link rel="stylesheet" href="style.json">

/srv/worldmap/html/index.html :

<html>
    <head>
        <title>PMTiles MapLibre Example</title>
        <meta charset="utf-8"/>
        <link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/maplibre-gl.css" crossorigin="anonymous">
        <link rel="stylesheet" href="style.json">
        <script src="https://unpkg.com/[email protected]/dist/maplibre-gl.js" crossorigin="anonymous"></script>
        <script src="https://unpkg.com/[email protected]/dist/pmtiles.js"></script>
        <style>
            body {
                margin: 0;
            }
            #map {
                height:100%; width:100%;
            }
        </style>
    </head>
    <body>
        <div id="map"></div>
        <script type="text/javascript">
            // add the PMTiles plugin to the maplibregl global.
            let protocol = new pmtiles.Protocol();
            maplibregl.addProtocol("pmtiles", protocol.tile);

            let PMTILES_URL = "protomaps.pmtiles";

            const p = new pmtiles.PMTiles(PMTILES_URL);

            // this is so we share one instance across the JS code and the map renderer
            protocol.add(p);

            // we first fetch the header so we can get the center lon, lat of the map.
            p.getHeader().then(h => {
                const map = new maplibregl.Map({
                    container: 'map',
                    zoom: h.maxZoom-2,
                    center: [h.centerLon, h.centerLat],
                    style: 'style.json'
                });
            })
        </script>
    </body>
</html>

and these are the versions of npm and node:

root@WorldMap:/srv/worldmap/html# npm version
{
  npm: '10.9.2',
  node: '22.14.0',
  acorn: '8.14.0',
  ada: '2.9.2',
  amaro: '0.3.0',
  ares: '1.34.4',
  brotli: '1.1.0',
  cjs_module_lexer: '1.4.1',
  cldr: '46.0',
  icu: '76.1',
  llhttp: '9.2.1',
  modules: '127',
  napi: '10',
  nbytes: '0.1.1',
  ncrypto: '0.0.1',
  nghttp2: '1.64.0',
  nghttp3: '1.6.0',
  ngtcp2: '1.10.0',
  openssl: '3.0.15+quic',
  simdjson: '3.10.1',
  simdutf: '6.0.3',
  sqlite: '3.47.2',
  tz: '2024b',
  undici: '6.21.1',
  unicode: '16.0',
  uv: '1.49.2',
  uvwasi: '0.0.21',
  v8: '12.4.254.21-node.22',
  zlib: '1.3.0.1-motley-82a5fec'
}

OS: Ubuntu 24.04

With this version of pmtiles : 20240902.pmtiles.0 : https://build.protomaps.com/20240902.pmtiles
everything is fine:

If I download the latest version: 20250224.pmtiles : https://build.protomaps.com/20250224.pmtiles

root@WorldMap:/srv/worldmap/html# rm protomaps.pmtiles


root@WorldMap:/srv/worldmap/html# axel https://build.protomaps.com/20250224.pmtiles
Initializing download: https://build.protomaps.com/20250224.pmtiles
File size: 124.115 Gigabyte(s) (133266938191 bytes)
Opening output file 20250224.pmtiles
Starting download

    [  0%] [0                                          1                                          .2                                          3                                           ] [ 997.0B/s] [1547d 1[  0%] [0                                          1                                          .2                                          3                                           ] [   1.9KB/s] [773d12
[100%] [..............................................................................................................................................................................] [  36.4MB/s] [00:00]



root@WorldMap:/srv/worldmap/html# ls -lah
total 125G
drwxr-xr-x  3 root root 4.0K Feb 25 16:45 .
drwxr-xr-x  3 root root 4.0K Feb 24 12:20 ..
-rw-r--r--  1 root root 125G Feb 25 16:45 20250224.pmtiles


root@WorldMap:/srv/worldmap/html# mv 20250224.pmtiles protomaps.pmtiles
root@WorldMap:/srv/worldmap/html#

I removed the previous style.json file, which was taken from here :
https://gist.github.com/wipfli/7062a865c89e36fa74b0701289c3c6c8 ,
and I've put the content of style.json from: https://maps.protomaps.com/#flavorName=light&lang=en&map=0.88/0/0

But, as you can see, I get no countries names, no borders, and no cities at all :

@wipfli
Do I have to modify something in this index.html file?

0 replies

bdon · 2025-02-26T04:41:36Z

bdon
Feb 26, 2025
Maintainer

My npm version is 10.9.2

The versions 4,5 refer to the versions of the @protomaps/basemaps package on npm.

If you are using the style.json copied from the Get Style JSON on https://maps.protomaps.com/ it should be compatible with the latest download. You haven't pasted your entire code example where you load style.json.

This is not valid code:

<link rel="stylesheet" href="style.json">

The MapLibre style JSON is not a CSS stylesheet, it needs to be loaded in JavaScript.

0 replies

raphael10-collab · 2025-02-26T07:34:42Z

raphael10-collab
Feb 26, 2025
Author

@bdon

This time I copied the whole style.json :

root@WorldMap:/srv/worldmap/html# tail style.json 
            "paint": {
                "text-color": "#a3a3a3",
                "text-halo-color": "#e2dfda",
                "text-halo-width": 1
            }
        }
    ],
    "sprite": "https://protomaps.github.io/basemaps-assets/sprites/v4/light",
    "glyphs": "https://protomaps.github.io/basemaps-assets/fonts/{fontstack}/{range}.pbf"
}
root@WorldMap:/srv/worldmap/html#

and, with this index.html : https://gist.github.com/wipfli/7062a865c89e36fa74b0701289c3c6c8#file-index-html :

<html>
    <head>
        <title>PMTiles MapLibre Example</title>
        <meta charset="utf-8"/>
        <link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/maplibre-gl.css" crossorigin="anonymous">
        <script src="https://unpkg.com/[email protected]/dist/maplibre-gl.js" crossorigin="anonymous"></script>
        <script src="https://unpkg.com/[email protected]/dist/pmtiles.js"></script>
        <style>
            body {
                margin: 0;
            }
            #map {
                height:100%; width:100%;
            }
        </style>
    </head>
    <body>
        <div id="map"></div>
        <script type="text/javascript">
            // add the PMTiles plugin to the maplibregl global.
            let protocol = new pmtiles.Protocol();
            maplibregl.addProtocol("pmtiles", protocol.tile);

            let PMTILES_URL = "protomaps.pmtiles";

            const p = new pmtiles.PMTiles(PMTILES_URL);

            // this is so we share one instance across the JS code and the map renderer
            protocol.add(p);

            // we first fetch the header so we can get the center lon, lat of the map.
            p.getHeader().then(h => {
                const map = new maplibregl.Map({
                    container: 'map',
                    zoom: h.maxZoom-2,
                    center: [h.centerLon, h.centerLat],
                    style: 'style.json'             // <---------  in this way it should be loaded in JavaScript 
                });
            })
        </script>
    </body>
</html>

I get a grey rendering (no maps at all) :

If I use this style.json : https://gist.github.com/wipfli/7062a865c89e36fa74b0701289c3c6c8#file-style-json
the world map appears but without borders, countries names and cities :

0 replies

bdon · 2025-02-26T08:11:12Z

bdon
Feb 26, 2025
Maintainer

Did you look at what console errors appear when you get the grey screen?

1 reply

raphael10-collab Feb 26, 2025
Author

I get this errors message:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://demo-bucket.protomaps.com/v4.pmtiles. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing). Status code: 206.

TypeError: NetworkError when attempting to fetch resource.

But the map is visible when using webkit2gtk:

So the CORS header problem is a problem with the above settings with google chrome and with mozilla firefox

wipfli · 2025-02-26T08:52:59Z

wipfli
Feb 26, 2025
Collaborator Sponsor

@raphael10-collab please provide a jsbin or stackblitz or similar. It is too difficult to debug on someone else's environment and gists are also not well suited.

7 replies

wipfli Feb 26, 2025
Collaborator Sponsor

@bdon I think we should remove this PMTILES_URL stuff from the example

            let PMTILES_URL = "protomaps.pmtiles";

            const p = new pmtiles.PMTiles(PMTILES_URL);

            // this is so we share one instance across the JS code and the map renderer
            protocol.add(p);

            // we first fetch the header so we can get the center lon, lat of the map.
            p.getHeader().then(h => {
                const map = new maplibregl.Map({
                    container: 'map',
                    zoom: h.maxZoom-2,
                    center: [h.centerLon, h.centerLat],
                    style: 'style.json'
                });
            })

should be

                const map = new maplibregl.Map({
                    container: 'map',
                    style: 'style.json'
                });

raphael10-collab Feb 26, 2025
Author

With these changes I still have the same CORS issue ( #401 (reply in thread) ) for Firefox and Chrome. With WebKit2Gtk this problem is not present

raphael10-collab Feb 26, 2025
Author

I have to rectify:

now with Google Chrome the map is correctly visible :

this is the index.html I'm using with the latest style.json file ( taken from https://maps.protomaps.com/#flavorName=light&lang=en&map=0.88/0/0 ) :

<html>
    <head>
        <title>PMTiles MapLibre Example</title>
        <meta charset="utf-8"/>
        <link rel="stylesheet" href="maplibre-gl.css">
        <script src="maplibre-gl.js"></script>
        <script src="pmtiles.js"></script>
        <style>
            body {
                margin: 0;
            }
            #map {
                height:100%; width:100%;
            }
        </style>
    </head>
    <body>
        <div id="map"></div>
        <script type="text/javascript">
            // add the PMTiles plugin to the maplibregl global.
            let protocol = new pmtiles.Protocol();
            maplibregl.addProtocol("pmtiles", protocol.tile);


            const map = new maplibregl.Map({
                container: 'map',
                style: 'style.json'
            });
        </script>
    </body>
</html>

But the CORS problem persists with Mozilla FireFox :

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://demo-bucket.protomaps.com/v4.pmtiles. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing). Status code: 206.
TypeError: NetworkError when attempting to fetch resource.

bdon Feb 26, 2025
Maintainer

That is intentional, because the object at demo-bucket.protomaps.com is not intended to be hotlinked arbitrarily. You should host your .pmtiles yourself and configure CORS.

Answer selected by bdon

raphael10-collab Feb 27, 2025
Author

I'm hosting .pmtiles my self

This is my /etc/nginx/sites-available/default configuration :

server {    
        server_name myserver.name;

        root /srv/worldmap/html;
    
        index index.html;


        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ =404;

                autoindex on;
                autoindex_exact_size off;
                autoindex_localtime on;

                add_header 'Access-Control-Allow-Origin' "$http_origin" always;
                add_header 'Access-Control-Allow-Credentials' 'true' always;
                add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
                add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,Range,User-Agent,X-Requested-With' always;

                if ($request_method = 'OPTIONS') {
                    # Tell client that this pre-flight info is valid for 20 days
                    add_header 'Access-Control-Allow-Origin' "$http_origin" always;
                    add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,Range,User-Agent,X-Requested-With' always;
                    add_header 'Access-Control-Max-Age' 1728000;
                    add_header 'Content-Type' 'text/plain charset=UTF-8';
                    add_header 'Content-Length' 0;
                    return 204;
                }
        }
}

.pmtiles that I'm hosting :

root@WorldMap:~# ls -lah /srv/worldmap/html/
total 125G
drwxr-xr-x  3 root root 4.0K Feb 27 12:48 .
drwxr-xr-x  3 root root 4.0K Feb 24 12:20 ..
-rwxr-xr-x  1 root root 1.3K Feb 24 19:01 OLDindex.html
-rw-r--r--  1 root root 404K Feb 26 08:14 OLDstyle.json
-rw-r--r--  1 root root  850 Feb 26 11:15 index.html
-rw-r--r--  1 root root  68K Feb 24 18:57 maplibre-gl.css
-rw-r--r--  1 root root 889K Feb 24 18:55 maplibre-gl.js
-rw-r--r--  1 root root 1.8K Feb 25 17:43 mapview.css
drwxr-xr-x 31 root root 4.0K Feb 26 09:10 node_modules
-rw-r--r--  1 root root  16K Feb 26 09:08 package-lock.json
-rw-r--r--  1 root root   93 Feb 26 09:08 package.json
-rw-r--r--  1 root root  48K Feb 24 19:00 pmtiles.js
-rw-r--r--  1 root root 125G Feb 25 16:45 protomaps.pmtiles                 //    <----------------------------
-rw-r--r--  1 root root 404K Feb 26 11:17 style.json
root@WorldMap:~#

And /srv/worldmap/html/index.html :

<html>
    <head>
        <title>PMTiles MapLibre Example</title>
        <meta charset="utf-8"/>
        <link rel="stylesheet" href="maplibre-gl.css">
        <script src="maplibre-gl.js"></script>
        <script src="pmtiles.js"></script>
        <style>
            body {
                margin: 0;
            }
            #map {
                height:100%; width:100%;
            }
        </style>
    </head>
    <body>
        <div id="map"></div>
        <script type="text/javascript">
            // add the PMTiles plugin to the maplibregl global.
            let protocol = new pmtiles.Protocol();
            maplibregl.addProtocol("pmtiles", protocol.tile);


            const map = new maplibregl.Map({
                container: 'map',
                style: 'style.json'
            });
        </script>
    </body>
</html>

And, with this nginx configuration, no issues at all with Google Chrome and with WebKit2Gtk, but with Firefox Mozilla "CORS Issue"

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The 20250217.pmtiles didn't contain any countries names and borders, and any cities at all #401

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The 20250217.pmtiles didn't contain any countries names and borders, and any cities at all #401

raphael10-collab Feb 20, 2025

Replies: 10 comments · 8 replies

wipfli Feb 20, 2025 Collaborator Sponsor

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Replies: 10 comments 8 replies

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