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Failed Adding Point Features QGIS (2.18)
By Reyalino,
Dear Fellows,
I am trying to add point feature data into QGIS (2.18), the shapefile itself has size around 300 Mb. Sadly QGIS said: "XXXX is not valid or recognize data source", I have yet trying to use the new version of QGIS. Anyone had a similar experience?
Mapfit: a promising new platform
By rahmansunbeam,
If you are a developer and you want to use the Google Maps Platform to power direction or other location-based features in your applications, things can quickly get expensive. Mapfit, which today announced that it has raised a $5.5 million funding round, promises to challenge Google on price while offering geocoding services and vector-based maps that are just as accurate as Google’s (and sometimes even better).
Among other things, Mapfit promises that it can figure out the correct en
NDVI imagery
By Marziye,
I'm trying to find a good source of NDVI imagery, but I'm struggling to find proper high res imagery for Iran.
Does anyone have references to high res imagery (less than 10 meter for 4-6 years ago)?
Slow running of view shed tool after multiple tries
By Maya007,
Hello all,
I am trying viewshed in ArcMap 10.3.1. The tool actually worked so fast before last two days and now it has slow down and it takes more than 12 hours to reach the results. Why is it so?
Did someone have this problem with Viewshed tool? What could be the reasons for slowing down? How to fix this?
Thanks for the help,
Maya
Viewshed with towers and trees
By Maya007,
Hello,
I want to do a viewshed of tall towers. Trees height data are also available. How to take into account the height of trees when doing viewshed analysis ?
thanks,
maaya
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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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