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TTTimeToTime Toolstimetotime-tools.hashnode.dev6d ago · 4 min read

Six checks that catch KML-to-CSV data loss before Excel does

A CSV can open cleanly and still misrepresent the KML it came from. Coordinates may be swapped, a missing altitude may become 0, multiple points inside one placemark may collapse to one row, or an ide

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MSMinaruzzaman Shovonminarsvn.hashnode.devOct 1 · 10 min read

How I Built a Real-Time Commute-Time Map for Chittagong Using Next.js, Mapbox & Turf.js

A step-by-step walkthrough of building an interactive isochrone map — click anywhere on the city, see exactly how far you can drive in 10, 20, 30, 40, 50, or 60 minutes. TL;DR — I built a browser-bas

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GBGenerate Buildgeneratebuild.hashnode.devAug 27 · 5 min read

Simulation Environment Architecture for Traffic and Emergency Response

Start with a bounded operational problem I avoid building a city-scale simulation environment until I can describe the operational problem in a few lines. A hazardous-material incident may require fre

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SKSanish Kumarsanish.hashnode.devAug 20 · 7 min read

The API said 200 OK. It had thrown my query away.

There is a specific kind of bug I have started to fear more than crashes: the one where a system returns something that looks exactly like an answer. Here is the one that prompted a fairly large rewri

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RRishikantrishiii2.hashnode.devJul 14 · 5 min read

Space to Earth Matrix: Revolutionizing Renewable Energy Placement with AI

The world is rapidly accelerating towards a sustainable future, and India has set an incredibly ambitious target of achieving five hundred gigawatts of non-fossil fuel energy capacity by the end of th

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AGAastha Gadeaasthardg.hashnode.devJun 28 · 4 min read

I Built a Renewable Energy Siting Model for 500,000 Sites Across the US. Here's Everything I Learned.

I've listed geopandas on my resume for a while now. Used it? Yes. Actually understood what was happening under the hood? ...mostly. This week I decided to change that. No tuts. No documentation skimmi

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Ssamueltohsamueltoh.hashnode.devJun 21 · 3 min read

Point-in-polygon: one PostGIS query for geofencing, zones, and spatial lookups

You've got a coordinate. You've got a pile of regions on a map. You need to know: which region does this point fall in, or is it inside one at all? That single question hides inside a lot of features:

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SKSanish Kumarsanish.hashnode.devJun 20 · 3 min read

How I built an Offline-First Voice-Controlled Map Engine in JavaScript

Have you ever tried to drag a map on your phone while carrying groceries? Or tried to annotate a field survey map while wearing gloves? Traditional GIS UIs assume you always have two free hands and pe

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MAMuhanad Abulhusnmuhanadabulhusn.hashnode.devJun 15 · 8 min read

A Hectare Has to Earn Its Way Into the Report

When the report assembles its headline number, the first thing it does is count twice. Sixty-three flood damage records, and sixty-three of them validated. Forty-eight crop-fire records, forty-eight v

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AAArthur Ashedrone-mapping-insights.hashnode.devJun 9 · 4 min read

NDVI vs NDRE: Understanding Two Important Multispectral Indices for Terrain Analysis

Multispectral imaging has become one of the most valuable technologies in modern drone mapping. While many professionals associate multispectral sensors with agriculture, their applications extend wel

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#gis

Explore Hashnode

Trending tags this week

Six checks that catch KML-to-CSV data loss before Excel does

How I Built a Real-Time Commute-Time Map for Chittagong Using Next.js, Mapbox & Turf.js

Simulation Environment Architecture for Traffic and Emergency Response

The API said 200 OK. It had thrown my query away.

Space to Earth Matrix: Revolutionizing Renewable Energy Placement with AI

I Built a Renewable Energy Siting Model for 500,000 Sites Across the US. Here's Everything I Learned.

Point-in-polygon: one PostGIS query for geofencing, zones, and spatial lookups

How I built an Offline-First Voice-Controlled Map Engine in JavaScript

A Hectare Has to Earn Its Way Into the Report

NDVI vs NDRE: Understanding Two Important Multispectral Indices for Terrain Analysis