proj4js
spectral
proj4js | spectral | |
---|---|---|
10 | 1 | |
1,941 | 165 | |
0.8% | 3.0% | |
6.0 | 8.1 | |
16 days ago | 6 days ago | |
JavaScript | JavaScript | |
GNU General Public License v3.0 or later | MIT License |
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proj4js
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How to Build a Choropleth Map in JavaScript
It is needed to link the required JS scripts in the section of the HTML page. These scripts include the Core and Geo Maps modules and the file that contains geodata for the world map, all of which are available on the CDN. I'll also use two more script files to connect the data to the choropleth map. One is the Data Adapter, which will help load the data, and the other is Proj4js, a JavaScript library that will transform the coordinates from one coordinate system to another so the data can be plotted on the map accurately.
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[Excel] VBA vs. Office Scripts
E.G. if I wanted to use proj4js apart from copying the entire build file into my source code, there is no easy way for me to use this library. I.E. code reuse is a nightmare still.
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How to Build a Connector Map in JS
We need the Core and Geo Map modules to take care of data visualization in the form of a connector map, geodata for a world map, and the Proj4js library to take care of geographic coordinates.
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Creating a JS Connector Map to Visualize Tour de France 2021 Route
One more script to wrap up the map-related additions is Proj4js, a JavaScript library that ensures the plotting of coordinates over the appropriate geographical area.
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How to Build an Interactive Flow Map in JavaScript
In addition, I will make use of another JavaScript library — Proj4js — which, in short, takes care of plotting the coordinates over the respective geographical areas.
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We’re the Microsoft Office Scripts and Power Automate teams – Ask us Anything (and come celebrate Office Scripts GA with us)!
In this way we can also still use javascript libraries to do complex tasks. E.G. Projection which is far too complicated to do in PowerAutomate. I've had this use case when trying to go from Latitude Longitude coords created by a phone to British National Grid coordinate system.
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How to read moon projections
Was hoping to make a mosaic of tiles. I used poj4js to convert data points, but it turned out to be very inaccurate for the moon (like off by 20 degrees or more).
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Distance between points to polygon/polygon to polygon on a sphere (Earth)
Then see in the doc here : https://github.com/proj4js/proj4js how to convert, it's easy once you have the definition.
spectral
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Band VV available in collection, but GEE says "Pattern 'VV' did not match any bands"
I am using two ready-to-use scripts: this publication for preprocess refinement and Awesome Spectral Indices for easy band maths (specifically example 5). This is my code.
What are some alternatives?
turf - A modular geospatial engine written in JavaScript and TypeScript
21S-191A - An upper-division course in UCLA's Asian American Studies Department designed to utilize web technologies and empower communities for social change.
awesome-spectral-indices - A ready-to-use curated list of Spectral Indices for Remote Sensing applications.
Cesium - An open-source JavaScript library for world-class 3D globes and maps :earth_americas:
gee_s1_ard - Creates an analysis ready sentinel-1 SAR image collection in Google Earth Engine by applying additional border noise correction, speckle filtering and radiometric terrain normalization.
h3-js - h3-js provides a JavaScript version of H3, a hexagon-based geospatial indexing system.
geemap - A Python package for interactive geospatial analysis and visualization with Google Earth Engine.
AnyChart - AnyChart is a lightweight and robust JavaScript charting solution with great API and documentation. The chart types and unique features are numerous, the library works easily with any development stack.
Awesome-GEE - A curated list of Google Earth Engine resources