Vector vs Raster in GIS: What’s the Difference?
The main spatial data types are vectors and rasters. Rasters have grid cells while vectors are points , lines and polygons consisting of vertices & paths.
Data Sources
A Complete Guide to TIGER GIS Data
TIGER GIS data has transformed the GIS environment because it was the first nationwide digital map. It stimulated projects like MapQuest, Yahoo & Google.
Unsigned Integer vs Signed Integer for Raster Data
Unsigned integer rasters are non-negative numbers. Signed integers can store negative values. IMG, TIFF & GRID formats are acceptable for signed integer
Top 6 Free LiDAR Data Sources
Does it feel like a big challenge to find LiDAR data sources? Master the art of attaining LiDAR at no cost with this list of 6 free LiDAR data sources.
10 Free GIS Data Sources: Best Global Raster and Vector Datasets
Turbo-charge your search for free GIS data with this list of 10 free, downloadable global GIS datasets from highly reputable sources – vector and raster.
Natural Earth Data – Free GIS Public Domain Data
Natural Earth data is a free raster and vector (cultural and physical) data package containing the most common elements that you need to create a map.
ArcGIS Shapefile Files Types & Extensions
ArcGIS shapefile files are composed of mandatory files (SHP, SHX and DBF) and optional files (PRJ, XML, SBN and SBX). This article lists their functions.
USGS Earth Explorer: Download Free Landsat Imagery
The USGS Earth Explorer is quick and easy to download free Landsat imagery & other remote sensing data. Enter ROI, define timeline and download for free.
4 Weather Data Sources for GIS
Some of the best GIS weather data available can be found at NWS, PRISM, MADIS and Weather Source. This GIS weather data dates back from past to present.