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SVM classification of multispectral data
By AdamL,
Hello everyone,
I am using Support Vector Machine (SVM) classifier on ASTER and Sentinel-2 datasets to map geological units. I am familiar with the basic statistical concept of SVM classifier, but in more practical terms, how does it use the spectral data from the satellite imagery to classify different classes? How does it determine the most accurate fit from the image-based training dataset?
Thank you to all of you,
Cheers!
Hands-on Workshop on WebGIS and Mapping
By Profound,
Hands-on Workshop on WebGIS and Mapping 11th May 2020 to 22nd May 2020.
Web GIS is a new pattern for delivering GIS capabilities on the web. Maps on the web provide a new paradigm for how people everywhere access and use geographic information. They use GIS maps on their desktops, the web, tablets, and smartphones for a sophisticated range of activities to apply advanced geographic information.
Web GIS is a transformation of GIS that brings analytics to spatial data in a way that wasn’
Covid-19
By intertronic,
for anyone who works with COVID-19, you can get a 6-month free ArcGIS licence
https://www.esri.com/en-us/disaster-response/request-assistance
Info
To help public health agencies and other organizations jump-start their response to coronavirus disease 2019 (COVID-19), Esri is providing the ArcGIS Hub Coronavirus Response template at no cost along with a complimentary six-month ArcGIS Online subscription with ArcGIS Hub Basic and ArcGIS Insights.
The ArcGIS Hub Coronavirus Res
Mapzen open-source mapping project revived under the Urban Computing Foundation
By Lurker,
The Mapzen open-source mapping platform has a hard history. On the one hand, Mapzen, which is based on OpenStreetMap, is used by over 70,000 developers and it's the backbone of such mapping services as , Remix and Carto. But, as a business, Mapzen failed in 2018. Mapzen's code and service lived on as a Linux Foundation Project.
Now, it's moved on to the Urban Computing Foundation (UCF), another Linux Foundation group with more resources. UCF is devoted to helping create smarter cities, mul
arcgis pro flood simutation
By jusk2000,
Hi guys,
I need to create a flood simulation on arcgis pro, does anyone know how to do that or could point me to some tutorial ? There are many tutorials on youtube using old versions of arcgis ( before "pro" ), I could not find anything for arcgis pro. I am using arcgis pro 2.2.3
Thanks
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Are you ready to level up your geospatial skills? Join our comprehensive training course covering ArcMap, ArcGIS Pro, and ArcOnline—the essential tools for modern spatial analysis and programming! What You’ll Learn: Core functionalities of ArcMap & ArcGIS Pro Cloud-based mapping with ArcGIS Online Automating workflows with Python & ModelBuilder Creating interactive web maps & apps Who Should Enroll? GIS beginners & professionals Urban planners, environmental scientists, & data analysts Developers looking to integrate spatial programming Why Choose This Course? Hands-on projects & real-world applications Expert-led sessions & flexible learning Limited slots available! Click here to register. Let’s shape the future of spatial data together! -
GPS is an incredible piece of modern technology. Not only does it allow for locating objects precisely anywhere on the planet, but it also enables the turn-by-turn directions we take for granted these days — all without needing anything more than a radio receiver and some software to decode the signals constantly being sent down from space. [Chris] took that last bit bit as somewhat of a challenge and set off to write a software-defined GPS receiver from the ground up. As GPS started as a military technology, the level of precision needed for things like turn-by-turn navigation wasn’t always available to civilians. The “coarse” positioning is only capable of accuracy within a few hundred meters, so this legacy capability is the first thing that [Chris] tackles here. It is pretty fast, though, with the system able to resolve a location in 24 seconds from cold start and then displaying its information in a browser window. Everything in this build is done in Python as well, meaning that it’s a great starting point for investigating how GPS works and for building other projects from there. The other thing that makes this project accessible is that the only other hardware needed besides a computer that runs Python is an RTL-SDR dongle. These inexpensive TV dongles ushered in a software-defined radio revolution about a decade ago when it was found that they could receive a wide array of radio signals beyond just TV. source: Hackaday and GitHub - chrisdoble/gps-receiver
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