Skip to content

Long's blog

Góp nhặt của một kẻ mù công nghệ :p

  • My Info
    • Đỗ Thành Long’s CV
    • My Github
    • My Youtube
    • My Google Scholar
    • My Facebook
  • Café
    • soiqualang_chentreu
    • Trắng Xóa!
    • Capuchino
    • Robusta Café
    • Đen nóng Café
  • Dev
    • Web
    • Công nghệ
    • Uncategorized
  • GIS
    • Shared Map
    • QGIS
    • WebGIS
    • PostgreSQL, PostGIS
    • GeoServer
    • Openlayers
  • Viễn thám
  • Research
    • Ý tưởng
    • Research
    • Sói’s Tutorials
  • Tài liệu
    • GIS – Remote Sensing news
    • Tài liệu
    • Dữ liệu
    • Mẹo vặt
  • My Apps
    • Khoa học thường thức
    • Trắng Xóa – Danh ngôn
    • Harmonica tabs
    • Ảnh chế hài hước, dzui dzui
    • GeoGIS
    • Guitar tabs – Viettabs
    • 2000 Phác đồ điều trị bệnh
    • Q2A
    • Học HTML
    • Openlayers Cookbook
    • OpenLayers3 Leaflte Cookbook
    • OpenLayers Create Code
    • PostgreSQL Tools
    • Get link Remote Sensing Data
    • Lon,Lat Decimal
    • Download Landsat Images
    • Tra cứu vận đơn Viettel Post
    • GET Map OGC WMS, WFS, WCS services
    • PHP-SLD Generate
    • Viettabs.cf – Guitar tabs sharing
    • Files to Videos
  • Other
    • Reading
    • Games
    • Harvest Moon

Category: GIS

Công nghệ GIS
GIS là gì? Sự ra đời của ngành GIS
Hệ thống thông tin địa lý GIS (viết tắt của cụm từ tiếng Anh Geographic Information Systems) là một công cụ tập hợp những quy trình dựa trên máy tính để lập bản đồ, lưu trữ và thao tác dữ liệu địa lý, phân tích các sự vật hiện tượng thực trên trái đất, dự đoán tác động và hoạch định chiến lược. Thuật ngữ này được biết đến từ những năm 60 của thế kỉ 20 và Giáo sư Roger Tomlinson được cả thế giới công nhận là cha đẻ của GIS

QGIS merge points within distance

Posted on 01/11/2022 by soiqualang_chentreu Posted in GIS, Mẹo vặt, QGIS Tutorials and Tips, Sói's Tutorials Tagged gis, merge points, QGIS, QGIS tutorialsLeave a Comment on QGIS merge points within distance

QGIS merge points within distance Issue How One possible approach consists in the following steps: draw a buffer of 5m around points; dissolve the buffers which overlap; calculate the centroids of dissolved buffers. You can choose the tools with which you’re more comfortable. Example\ For […]

Read More

[JS GIS] Gridded Population (15 minute) – United States in JavaScript

Posted on 22/10/202222/10/2022 by soiqualang_chentreu Posted in GIS, Lang thang, Web, WebGIS Tagged gis, JavaScript GIS, JS GIS, opengis, webgisLeave a Comment on [JS GIS] Gridded Population (15 minute) – United States in JavaScript

[JS GIS] Gridded Population (15 minute) – United States in JavaScript Credit: Gridded Population (15 minute) – United States by Evan Galloway https://observablehq.com/@gallowayevan/gridded-population-15-minute-united-states

Read More

[JS GIS] JavaScript GIS Coords2geo | GeoToolbox

Posted on 22/10/2022 by soiqualang_chentreu Posted in GIS, Lang thang, Web, WebGIS Tagged gis, JavaScript GIS, JS GIS, opengis, webgisLeave a Comment on [JS GIS] JavaScript GIS Coords2geo | GeoToolbox

[JS GIS] JavaScript GIS Coords2geo | GeoToolbox Credit: Coords2geo by neocarto https://observablehq.com/@neocartocnrs/coords2geo

Read More

GDAL GIS in Browser (JS GIS)

Posted on 22/10/202222/10/2022 by soiqualang_chentreu Posted in Công nghệ, GIS, Lang thang, Web, WebGIS Tagged gdal, geotoolbox, gis, Open Source GISLeave a Comment on GDAL GIS in Browser (JS GIS)

GDAL GIS in Browser (JS GIS | geotoolbox) ] geotoolbox is javascript tool for geographers. It allows to simply deal with geojson properties (attribute data) and provides several GIS operations useful for thematic cartography. 1. Installation 1.1. In browser Latest version <script […]

Read More

Point cloud processing in QGIS and 3D data enhancements

Posted on 13/10/2022 by soiqualang_chentreu Posted in Công nghệ, GIS, Lang thang, QGIS Tutorials and Tips Tagged 3D, 3D WebGIS, Point cloud, QGISLeave a Comment on Point cloud processing in QGIS and 3D data enhancements

Summary https://www.lutraconsulting.co.uk/crowdfunding/pointcloud-processing-qgis/ In the wake of successful crowdfunding campaigns in 2020 and 2021, we are pleased to announce the launch of a new campaign to further improve QGIS capabilities in managing and analyzing point clouds. The objectives of this campaign are to: Add […]

Read More

Leaflet vector tiles example

Posted on 12/10/2022 by soiqualang_chentreu Posted in GIS, Lang thang, Web, WebGIS Tagged leaflet, vector tiles, webgisLeave a Comment on Leaflet vector tiles example

Leaflet vector tiles example Vector tiles Plugins to display vector tiles. Plugin Description Demo Maintainer geojson-vt Efficient library for slicing GeoJSON data into vector tiles on the fly. Mapbox Hoverboard Render vector tiles on canvas with leaflet (geojson, topojson, and protobuf). […]

Read More

SELECTION in WMS servering by QGIS Server

Posted on 12/10/202212/10/2022 by soiqualang_chentreu Posted in GIS, Mẹo vặt, WebGIS Tagged QGIS, QGIS Server, WMS1 Comment on SELECTION in WMS servering by QGIS Server

SELECTION in WMS servering by QGIS Server Full query https://geoviet_mapserv.dothanhlong.org/?MAP=/gis/mbgis/api.qgs&service=WMS&request=GetMap&layers=vn_vunghanhchinh&styles=&format=image%2Fpng&transparent=true&version=1.1.1&tiled=true&width=256&height=256&srs=EPSG%3A3857&bbox=11897270.578531114,1252344.2714243277,12523442.714243278,1878516.4071364922 SELECT a Feature You only can use id attribute to select feature Selected feature is highlight in yellow https://geoviet_mapserv.dothanhlong.org/?MAP=/gis/mbgis/api.qgs&service=WMS&request=GetMap&layers=vn_vunghanhchinh&styles=&format=image/png&transparent=true&version=1.1.1&tiled=true&width=256&height=256&srs=EPSG:3857&bbox=11897270.578531114,1252344.2714243277,12523442.714243278,1878516.4071364922&selection=vn_vunghanhchinh:41 Refernces https://docs.qgis.org/3.22/en/docs/server_manual/services/wms.html

Read More

Filter in WMS servering by QGIS Server

Posted on 10/10/202210/10/2022 by soiqualang_chentreu Posted in GIS, Mẹo vặt, Sói's Tutorials, WebGIS Tagged QGIS, QGIS Server, WMSLeave a Comment on Filter in WMS servering by QGIS Server

Filter in WMS servering by QGIS Server Full query https://geoviet_mapserv.dothanhlong.org/?MAP=/gis/mbgis/api.qgs&service=WMS&request=GetMap&layers=vn_vunghanhchinh&styles=&format=image%2Fpng&transparent=true&version=1.1.1&tiled=true&width=256&height=256&srs=EPSG%3A3857&bbox=11897270.578531114,1252344.2714243277,12523442.714243278,1878516.4071364922 Filter query https://geoviet_mapserv.dothanhlong.org/?MAP=/gis/mbgis/api.qgs&service=WMS&request=GetMap&layers=vn_vunghanhchinh&styles=&format=image/png&transparent=true&version=1.1.1&tiled=true&width=256&height=256&srs=EPSG:3857&bbox=11897270.578531114,1252344.2714243277,12523442.714243278,1878516.4071364922&filter=vn_vunghanhchinh: "ten_vi" = 'Phú Yên' Refernces https://docs.qgis.org/3.22/en/docs/server_manual/services/wms.html

Read More

Python make Choropleth map with mapclassify

Posted on 08/09/2022 by soiqualang_chentreu Posted in GIS, Lang thang, Mẹo vặt Tagged Choropleth map, map, mapclassify, pythonLeave a Comment on Python make Choropleth map with mapclassify

Python make Choropleth map with mapclassify https://pysal.org/mapclassify/

Read More

Introduction to QGIS

Posted on 16/04/2022 by soiqualang_chentreu Posted in GIS, QGIS Tutorials and Tips Tagged cartography, QGISLeave a Comment on Introduction to QGIS

QGIS is a full-featured, user-friendly, free-and-open-source (FOSS) geographical information system (GIS) that runs on Unix platforms, Windows, and MacOS. Features 1. Flexible and powerful spatial data management Supports raster, vector, mesh, and point cloud data in a range of industry-standard […]

Read More

[QGIS Basic] How to Download and Install the latest QGIS software

Posted on 11/04/202211/04/2022 by soiqualang_chentreu Posted in Công nghệ, GIS, QGIS Tutorials and Tips, Sói's Tutorials Tagged Cài đặt QGIS, Install QGIS, QGIS, QGIS tutorialsLeave a Comment on [QGIS Basic] How to Download and Install the latest QGIS software

[QGIS Basic] How to Download and Install the latest QGIS software Hello everyone, today I will guide you to download and install QGIS software in the most methodical way DOWNLOAD QGIS SOFTWARE To have the software, first we need to […]

Read More

Fix OGR2OGR Import – invalid byte sequence for encoding UTF8

Posted on 09/04/2022 by soiqualang_chentreu Posted in GIS, Mẹo vặt Tagged OGR2OGR, postgresql, Shapefile, Shapefile to PostgreSQLLeave a Comment on Fix OGR2OGR Import – invalid byte sequence for encoding UTF8

Fix OGR2OGR Import – invalid byte sequence for encoding UTF8 Error showing When I use OGR2OGR to import Shapeilfe to PostgreSQL, I got error like this: invalid byte sequence for encoding "UTF8": 0xe2 0x6e 0x20 How to fix invalid byte […]

Read More

[QGIS cơ bản] Hướng dẫn Tải và Cài đặt phần mềm QGIS

Posted on 03/04/202205/04/2022 by soiqualang_chentreu Posted in Công nghệ, GIS, QGIS Tutorials and Tips Tagged Cài đặt QGIS, Install QGIS, opengis, QGIS, QGIS tutorialsLeave a Comment on [QGIS cơ bản] Hướng dẫn Tải và Cài đặt phần mềm QGIS

[QGIS cơ bản] Hướng dẫn Tải và Cài đặt phần mềm QGIS Xin chào các bạn, hôm nay mình sẽ hướng dẫn các bạn tải và cài đặt phần mềm QGIS một cách bài bản nhất =)) TẢI PHẦN MỀM […]

Read More

Download Sentinel-2 10-Meter Land Use – Land Cover

Posted on 29/03/202203/04/2022 by soiqualang_chentreu Posted in Dữ liệu, GIS, Lang thang, WebGIS Tagged ArcGIS, Land Cover, Land Use, SentinelLeave a Comment on Download Sentinel-2 10-Meter Land Use – Land Cover

Download Sentinel-2 10-Meter Land Use – Land Cover Land use changes rapidly. So should our maps. Detailed. Timely. Accurate. An annual 10-meter resolution map of Earth’s land surface from 2017-2021 High-resolution, open, accurate, comparable, and timely land use maps are […]

Read More

PostgreSQL for IoT (The Internet Of Strange Things)

Posted on 14/03/2022 by soiqualang_chentreu Posted in Công nghệ, GIS, Lang thang, Tài liệu Tagged IoT, postgresqlLeave a Comment on PostgreSQL for IoT (The Internet Of Strange Things)

PostgreSQL for IoT (The Internet Of Strange Things)

Read More

Posts navigation

Older posts
Newer posts
Buy me a coffee - MOMO

Tags

3D WebGIS Android Android studio api ArcGIS Capacitor cloudflare cordova database Docker gdal geoserver gis git github Google Earth Engine guitar htaccess Ionic IOS javascript JS GIS Jupyter Notebook leaflet Linux Machine learning map mysql Nodejs openlayers php Pokemon postgis postgresql python QGIS remote sensing sql tomcat tools ubuntu VirtualBox viễn thám webgis wordpress

Recent Posts

  • Fix Geoserver WMS character representation error (UTF-8)
  • Create a globe-like orthographic projection map in QGIS 3
  • Linux Link, Unlink folder
  • PostgreSQL select current user
  • Moodle ERROR You don’t have permission to view this list of courses

Recent Comments

  • [GEE Cơ bản #1] Hướng dẫn thêm một tập ảnh trong Google Earth Engine – OpenGIS Việt Nam on [GEE Basic] Add an Image collection in Google Earth Engine
  • Cannot-Make-Directory-Permission-Denied-Bij-Run-Screen. on [Linux Screen] Cannot make directory ‘/var/run/screen’: Permission denied
  • Lê Tiến on Installing Apache, QGIS Server, And Lizmap Web Client On Windows OS
  • Amit Kumar Singh on Tìm hiểu Cloudflare Worker
  • Nguyen Liem on [Python] Text to speech – Chuyển văn bản thành giọng nói FPT Speech Synthesis

Categories

  • Capuchino
  • Công nghệ
  • Dữ liệu
  • GIS
  • Google Earth Engine
  • Lang thang
  • Linux
  • Mẹo vặt
  • QGIS Tutorials and Tips
  • Research
  • Sói's Tutorials
  • Tài liệu
  • Uncategorized
  • Viễn thám
  • Web
  • WebGIS
  • Ý tưởng

Archives

  • December 2023
  • November 2023
  • October 2023
  • September 2023
  • August 2023
  • July 2023
  • June 2023
  • May 2023
  • April 2023
  • March 2023
  • February 2023
  • December 2022
  • November 2022
  • October 2022
  • September 2022
  • August 2022
  • July 2022
  • June 2022
  • May 2022
  • April 2022
  • March 2022
  • December 2021
  • November 2021
  • October 2021
  • September 2021
  • August 2021
  • July 2021
  • June 2021
  • May 2021
  • April 2021
  • March 2021
  • January 2021
  • December 2020
  • November 2020
  • September 2020
  • August 2020
  • August 2019
  • July 2019
  • May 2019
  • April 2019
  • March 2019
  • February 2019
  • January 2019
  • December 2018
  • November 2018
  • October 2018
  • September 2018
  • August 2018
  • July 2018
  • June 2018
  • May 2018
  • October 2017
  • September 2017
  • August 2017
  • June 2017
  • May 2017
  • April 2017

Meta

  • Log in
  • Entries feed
  • Comments feed
  • WordPress.org

Copyright 2022. All rights reserved.