#Raster vs vector data how to#
#Raster vs vector data free#

Free GIS Data SourcesĮverybody who is really interested to play with the geographical data these is the free resource providing platforms. Raster and Vector datasets are two data formats which are utilized heavily for spatial related information. This layout is usually used for satellite imagery, aerial photography, digital elevation models and topographic maps, etc. Raster data is a bitmap representation such as a TIFF or JPEG. If vector data is non-figurative, raster data is factual.

#Raster vs vector data how to#

That column contains one or additional coordinates that illustrate how to portray the point, line or polygon that represents that feature on the features of the terrain. The better way to visualize it is to believe it as a spreadsheet with columns that include our regular data, but in count it always has an additional column called “geometry”. We can assume vector data as guidelines for how to render the data. Many geographic data projects involve integrating data from many different sources, such as remote sensing images (rasters) and administrative boundaries (. We know that there are 2 major types of GIS data:

Environmental Analysis and Modelling Using GIS.

Digital Image Processing in Remote Sensing.

Water Availability, Quality, Accessibility and Monitoring.

Hydrometric Analysis – Uncertainty Analysis.

Hydrometric Analysis – Feasibility and design.

Vector data are easier to scale, re-project or register. Vector data are easily overlaid, for example overlaying roads, rivers, land use are easier than raster data. However, the distinction between vector and raster data types is not unique to GIS: here is an example from the graphic design world which might be clearer. Raster data has issue while overlaying multiple images. In GIS, vector and raster are two different ways of representing spatial data. Ubiquitous online mapping portals, such as Google Maps and Open Street Maps, present data in this format.

Hydrometric Network – Monitoring and Optimization Raster data is less expensive to create computationally compare to vector graphics. Vector data is extremely useful for storing and representing data that has discrete boundaries, such as borders or building footprints, streets and other transport links, and location points.Hydrometric Analysis – Flow Gauge Ratings.

GIS Application and Mobile GIS Development.Spatial Data Analysis Using Geographic Information Systems.