GIS

Generating Vector Tiles with PostGIS and Python for OpenLayers Map Rendering

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What are Vector Tiles? Vector tiles are a way of storing and serving geographic data in a compact and efficient format. Unlike traditional raster tiles, which are pre-rendered images, vector tiles contain vector data that can be rendered dynamically on the client side. This means that they can be styled and labeled in real-time, allowing …

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Integrating OpenLayers Map with VueJS: Recreating the project with Vite, Pinia and TypeScript-Part 5

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This tutorial will guide you through the process of recreating an existing project that integrates OpenLayers Map with VueJS, using Vite, Pinia, and TypeScript. The original project used Vuex, which has since been deprecated, so we will be updating it with the newer and more efficient state management library, Pinia. We will start by setting …

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Building a Custom Geocoding Service with Autocomplete using Python, PostGIS, and OpenLayers for Address Lookup

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This tutorial will guide you through the process of building a custom geocoding API utilizing Python and PostGIS, enabling address searches on an OpenLayers map. In addition to implementing autocomplete functionality for a more user-friendly experience, we will also demonstrate how to zoom in to the selected address upon click. We will go through following …

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Geocoding and Reverse Geocoding in python using geopy

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Geocoding is the process of converting an address into latitude and longitude coordinates. Reverse geocoding is the process of converting latitude and longitude coordinates into an address. In Python, there are several libraries available to perform geocoding and reverse geocoding, including Geopy and Google Maps API. In this tutorial, we’ll be using Geopy to geocode …

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Integrating OpenLayers Map with VueJS: Open Feature Information Popup on click – Part 4

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In this part, we will show you how to add interactivity to the map by using OpenLayers and Vue.js. We will create a simple pop-up window that displays the feature’s attributes when clicked on the map and also highlight the feature on map. To get full source code for this tutorial, click here. To check …

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GeoSpatial Analysis using GeoPandas in python

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In this tuorial, we will do geospatial analysis using python on UK Accidents and UK Administrative datasets. Geopandas is a library for working with geospatial data in Python. It builds on the popular Pandas library and extends its functionality to handle geospatial data. Some of the key features of Geopandas include: Here are some examples …

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Read raster data from postgis using python

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In this tutorial, we will learn how to read raster data from postgis table using python. Python is a powerful tool for raster data analysis due to rich library ecosystem: Python has a large number of libraries specifically designed for geospatial data analysis, such as rasterio, rioxarray, gdal, geopandas, shapely, etc. These libraries provide a …

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Big Spatial Data Visualization using DeckGL

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Big Data Visualization using DeckGL “deck.gl is a WebGL-powered framework for visual exploratory data analysis of large datasets.” In this tutorial, we will learn how to visualize large geospatial datasets using deck.gl through an example. We will take uk accidents data sets and will visualize it using deck.gl.In this tutorial, we have considered the UK …

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Integrating OpenLayers Map with VueJS: Implement Style and legend for vector layer – Part 3

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Integrating OpenLayers Map with VueJS: Implement Style and legend for vector layer – Part 3 This blog post is the third part in OpenLayers-VueJS integration series. In part one, we implemented Layer Panel. In this tutorial, we will implement style and render legend for Vector Layers. OpenLayers VueJS integration series:1. Integrating OpenLayers Map with VueJS: …

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