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Least Cost Path Analysis in GIS

Least Cost Path Analysis in GIS

The least cost path finds the most cost-effective path, from a start point to a destination, making it a useful tool for linear routing.

What is an Aspect Map?

What is an Aspect Map?

In the mountains, the terrain slopes are in all directions – east, west, north and south-facing. The compass direction that the slope faces is slope aspect.

What Is Flow Direction in GIS?

What Is Flow Direction in GIS?

Flow direction calculates the direction water will flow in its eight adjacent cells using slope from neighboring cells (in a raster grid cell)

How to Fill NoData for Raster Data

How to Fill NoData for Raster Data

SAGA GIS has a quick and dirty tool to fill NoData holes with raster data. We show you how to close gaps in DEMs or any raster data with holes in it.

What is Map Algebra? [Raster Math]

What is Map Algebra? [Raster Math]

Map algebra is a cell-by-cell combination of stacked raster grids. It uses math-like functions with arithmetic, statistics and trigonometry operators.

Raster Clip in GIS

Raster Clip in GIS

Save time by learning how to clip rasters in ArGIS using the raster clip tool in ArcToolbox as well as the clip button in the Image Analysis Toolbar.