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Sharing GIS Technologies, Resources and News.

Creating Beijing Transportation Maps with MapGIS Desktop Jiuzhou

Amidst China's strategic focus on secure and controllable information technology systems, the domestic innovation ecosystem has ushered in unprecedented opportunities. The rise of homegrown operating systems, databases, middleware, and GIS software has fortified information security while providing new technological foundations for the GIS industry. Within this context, innovations in GIS cartography transcend traditional spatial visualization, advancing toward intelligent, personalized, and real-time applications that unlock new possibilities for creating high-value maps.

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Using AI to Automatically Vectorize in QGIS: A Practical Guide

With the rapid development of AI technologies—such as in our earlier article A First Look at Using Segment Anything for GIS and the booming trend of generative AI—many GIS professionals might wonder: is there an AI tool that can help with vectorization tasks? The answer is yes. In this article, we will explore how to use an AI-powered plugin in QGIS to automate vectorization.

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Installing Python Packages in ArcGIS Environments: Manual and Automated Approaches

When extending ArcGIS Python functionality (e.g., using openpyxl for Excel integration), installing supplementary packages becomes necessary. This guide demonstrates manual and automated installation methods for both online and offline scenarios.

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Practical Python Integration in ArcGIS: Key Implementation Methods

Using Python within ArcGIS requires foundational Python knowledge. The following modules support Python integration:

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Converting GIS Polygons to WKT Format with QGIS and Python

While developing a workflow involving spatial data duplication, an analyst requested help with client requirements:
① Convert individual polygons to WKT format in TXT files
② Merge multiple polygons into MultiPolygon WKT format

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Resolving Blank Screen Issue in ArcGIS Pro 3.0 After Installation

Users installing ArcGIS Pro 3.0 on Windows 11 may encounter a blank interface despite successful installation. The software displays no maps, web services, or searchable online tools:


Figure: Post-installation blank screen

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All history Map: Integrating Geography, Figures, and Events

Following our previous article 《「GIS Resource」Sharing WMTS Service for Chinese Historical Maps》, many users adopted the historical territory maps. However, those maps lacked contextual historical figures and events. Based on reader recommendations, we present a more comprehensive solution:

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Real-Time Visualization Tool for Tracking Global Satellite Orbits

Following our previous article 《A WMTS Service for Historical Chinese Maps: How to Load in QGIS》, colleagues inquired about websites for querying global satellite parameters. Coincidentally, I recently discovered such a platform through video recommendations. The website remains operational and is shared here for relevant needs.

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Processing OSGB Oblique Photography Data in ArcGIS Pro: A Step-by-Step Guide

Recently, while testing OSGB data and related software, I explored using ArcGIS Pro for this purpose. After successful verification, this article documents the specific workflow.

Required Tools

  1. ArcGIS Pro 3.0/3.1 (Other versions & ArcMap untested)
  2. Sample oblique photography dataset

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Calculating Polygon Centroids: Principles and Implementation

In a previous article "Adding Centroid Coordinates in QGIS Using Field Calculator", we demonstrated adding centroid coordinates via QGIS. This article explains the mathematical principles behind centroid calculation for polygons.

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