Mapboxgl load Martin generated vector slices, small-scale automatic simplification, how to solve? #1046

szygiser · 2023-12-07T10:29:26Z

Mapboxgl load Martin generated vector slices, small-scale automatic simplification, how to solve?

nyurik · 2023-12-07T16:55:39Z

@szygiser I do not understand the question. Please provide more details

szygiser · 2023-12-08T01:00:28Z

@szygiser I do not understand the question. Please provide more details

I used mpboxgl to load the vector tiles of the line layer generated by Martin. When I reduced the map scale, the line layer became blurred。

szygiser · 2023-12-08T01:02:37Z

@szygiser I do not understand the question. Please provide more details

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>Add a third party vector tile source</title>
    <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
    <link href="https://api.mapbox.com/mapbox-gl-js/v2.14.1/mapbox-gl.css" rel="stylesheet">
    <script src="https://api.mapbox.com/mapbox-gl-js/v2.14.1/mapbox-gl.js"></script>
    <style>
        body {
            margin: 0;
            padding: 0;
        }

        #map {
            position: absolute;
            top: 0;
            bottom: 0;
            width: 100%;
        }
    </style>
</head>
<body>
<div id="map"></div>
<script>
    // TO MAKE THE MAP APPEAR YOU MUST
    // ADD YOUR ACCESS TOKEN FROM
    // https://account.mapbox.com
    mapboxgl.accessToken = 'pk.eyJ1Ijoic29uZ3plbmd5dSIsImEiOiJjbGo0ZDM0bmMwMTBzM2RreGlqMXNsc2YwIn0.ik-fY3Yx7mRu02ySZnjavQ';
    const map = new mapboxgl.Map({
        container: 'map',
        // Choose from Mapbox's core styles, or make your own style with Mapbox Studio
        style: 'mapbox://styles/mapbox/light-v11',
        zoom: 10,
        center: [117.110805, 36.663046],
        projection: 'mercator',
        antialiased: true,
        hash: true,
        minTileCacheSize: 512,
        collectResourceTiming: true,
        cooperativeGestures: false,
        crossSourceCollisions: true,
        refreshExpiredTiles: true,
        trackResize: false
    });

    map.on('load', () => {
            addMvt();
        }
    );

    map.addControl(new mapboxgl.NavigationControl());

    function addMvt() {
        map.addLayer({
            id: 'lines',
            type: 'line',
            source: {
                type: 'vector',
                url: 'http://localhost:3000/ghgas_pipesectionhpa'
            },
            'source-layer': 'ghgas_pipesectionhpa',
            paint: {
                'line-opacity': 1,
                'line-color': 'rgb(53, 175, 109)',
                'line-width': 2
            }
        });
    }
</script>
</body>
</html>

nyurik · 2023-12-08T04:28:31Z

I don't know for sure - the way you look the mapbox lib seems ok (i'm not an expert), esp since you use v2 that i have never used (maplibre was forked from v1). I think this is not a Martin issue. Martin generates tiles as MVT vectors for each zoom level. As you zoom in/out, you will get a different tile with different data. Bluriness is not part of it unless mapbox did something weird(?).

sharkAndshark · 2023-12-08T05:25:41Z

Hi @szygiser ,Would you mind to share your data here? Or would you like to share your SQL if it's a function source?

szygiser · 2023-12-08T05:39:45Z

this is the data zy.S ***@***.***  

…

------------------ 原始邮件 ------------------ 发件人: "maplibre/martin" ***@***.***>; 发送时间: 2023年12月8日(星期五) 中午1:25 ***@***.***>; ***@***.******@***.***>; 主题: Re: [maplibre/martin] Mapboxgl load Martin generated vector slices, small-scale automatic simplification, how to solve? (Issue #1046) Hi @szygiser ,Would you mind to share your data here? — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you were mentioned.Message ID: ***@***.***>

szygiser · 2023-12-08T06:16:56Z

I use maplibre to load, but this issue also occurs

nyurik · 2023-12-08T07:08:29Z

@szygiser please use github web interface. Your email do not get through correctly (i fixed one of your emails). The data did not come in.

szygiser · 2023-12-08T09:48:46Z

@szygiser please use github web interface. Your email do not get through correctly (i fixed one of your emails). The data did not come in.
hpa.gdb.zip

szygiser · 2023-12-08T09:49:22Z

Hi @szygiser ,Would you mind to share your data here? Or would you like to share your SQL if it's a function source?

hpa.gdb.zip

sharkAndshark · 2023-12-13T15:54:55Z

@szygiser What's the Spatial Reference here? There's no spatial reference information in your gdb file.

szygiser · 2023-12-14T07:39:44Z

the Spatial Reference  is  CGCS2000_3_Degree_GK_CM_117E WKID: 4548   you can convert it to WGS84 zy.S ***@***.*** Original Email Sender:"Lucas"< ***@***.*** >; Sent Time:2023/12/13 23:55 To:"maplibre/martin"< ***@***.*** >; Cc recipient:"szygiser"< ***@***.*** >;"Mention"< ***@***.*** >; Subject:Re: [maplibre/martin] Mapboxgl load Martin generated vector slices,small-scale automatic simplification, how to solve? (Issue #1046) @szygiser What's the Spatial Reference here? There's no spatial reference information in your gdb file. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you were mentioned.Message ID: ***@***.***>

szygiser · 2023-12-14T07:51:25Z

@szygiser What's the Spatial Reference here? There's no spatial reference information in your gdb file.
you can also use the shp file. the Spatial Reference of this file is WGS84.
shp.zip

sharkAndshark · 2023-12-14T15:42:44Z

I duplicate it with our debug.thml @nyurik Just import the shp.zip and run martin then move to /8/211/99

sharkAndshark · 2023-12-14T15:45:36Z

And I saved the 7/105/49(need to remove the .txt )

z7x105y49.mvt.txt

sharkAndshark · 2023-12-14T15:52:31Z

That's because they are all too small so postgis droped them @szygiser
If you merged all lines into one single, it looks normal:

nyurik added the question label Dec 7, 2023

maplibre locked and limited conversation to collaborators Dec 17, 2023

nyurik converted this issue into discussion #1077 Dec 17, 2023

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Mapboxgl load Martin generated vector slices, small-scale automatic simplification, how to solve? #1046

Mapboxgl load Martin generated vector slices, small-scale automatic simplification, how to solve? #1046

szygiser commented Dec 7, 2023

nyurik commented Dec 7, 2023

szygiser commented Dec 8, 2023

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This issue was moved to a discussion.

Mapboxgl load Martin generated vector slices, small-scale automatic simplification, how to solve? #1046

Mapboxgl load Martin generated vector slices, small-scale automatic simplification, how to solve? #1046

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