Скачать или смотреть From Raster to Shapefile: Create a Basin Boundary from DEM Data

Convert a DEM-based basin raster into a clean vector polygon boundary with this quick and easy GIS workflow.
By GeoJamal Tv
In this step-by-step GIS tutorial, you'll learn how to convert a raster basin (DEM) into a clean vector polygon shapefile using simple geoprocessing tools. This process is essential for hydrological modeling, watershed analysis, and any project that requires a precise basin boundary.

What You’ll Learn:

How to reclassify a raster to binary values (1 = basin, 0 = non-basin)

How to convert the binary raster into vector polygons

How to identify and extract the correct basin polygon

How to clean and export the final shapefile boundary

📦 Tools Used:
✅ Raster Reclassify or Conditional Tool
✅ Raster to Polygon Conversion
✅ Vector Editing (Delete outside polygons)
✅ Export to Shapefile

This technique is commonly used in ArcGIS, QGIS, and other GIS platforms.
#GIS #QGIS #ArcGIS #DEM #WatershedAnalysis #GeoJamalTV #RasterToPolygon #shapefile

Many GIS users struggle with extracting clean vector boundaries from raster datasets, especially when working with DEM-derived basins. This tutorial addresses common issues such as:

❌ Difficulty converting raster to shapefile without extra noise
❌ Getting multiple polygons instead of a single, clean basin
❌ Unwanted features or artifacts after raster-to-polygon conversion
❌ Not knowing how to reclassify the raster to isolate the basin
❌ Lack of clear step-by-step guidance on cleaning up vector outputs

By following this video, you'll overcome these problems and gain confidence in handling raster-to-vector conversions in any GIS workflow

Created by : Jamal CHAAOUAN جمال شعوان

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