CLIPPING IN Q GIS скачать в хорошем качестве

CLIPPING IN Q GIS

Vector Clipping in QGIS Goal: Extract only the features of a vector layer that fall within another polygon layer. Steps: Load your layers (both the layer you want to clip and the clipping polygon). Go to Menu → Vector → Geoprocessing Tools → Clip. In the dialog: Input Layer: The layer you want to clip. Overlay Layer: The polygon layer used as the boundary. Choose an output file path (or temporary layer). Click Run. The resulting layer contains only features inside the polygon. Tip: If you just want to select features without creating a new layer, you can use Select by Location → Export Selected Features. Raster Clipping in QGIS Goal: Keep only the portion of the raster that falls within a polygon or rectangular extent. Steps (Using Polygon Mask): Load your raster and polygon layer. Go to Menu → Raster → Extraction → Clip Raster by Mask Layer. In the dialog: Input Layer: The raster to clip. Mask Layer: The polygon layer defining the area to keep. Tick “Match the extent of the mask layer”. Tick “No data value” to define what’s outside the mask (usually 0 or -9999). Choose output file. Click Run. Steps (Using Extent Box): Go to Menu → Raster → Extraction → Clip Raster by Extent. Define the extent manually (or use the layer extent). Save output and run. Tip: Make sure both raster and vector are in the same CRS, or clipping won’t align correctly. Mask layer can be used to clip multiple bands at once. ✅ Quick Comparison Guide Type Tool in QGIS Input Needed Output Vector Vector → Geoprocessing → Clip Input + Overlay polygon New clipped vector Raster Raster → Extraction → Clip Raster by Mask Input raster + Mask polygon New clipped raster Raster Raster → Extraction → Clip Raster by Extent Input raster + extent box New clipped raster video link for digitization explaining how to create shapefiles    • Digitization in Q gis with Denis