Removing parts of raster layer with QGIS (equivalent of vector difference tool)?

How do I trim a raster image in QGIS?

Clipper Tool

1. Verify the raster you want clipped is the Input file.
2. Click “Select…” next to the Output file, find your working folder, and name the output raster.
3. Click the radio button next to Mask layer and use the drop-down arrow to select the layer you are masking the raster tool.
4. Click OK.

How do I delete a raster layer in QGIS?

3 Answers

1. Use Polygonize on one raster (Raster > Conversion > Polygonize (Raster to Vector))
2. Create a new polygon shapefile which covers the entire extent of the main raster you want differenced.
3. Use the Difference tool on the new polygon shapefile and the polygonized shapefile.

What is the difference between raster layer and vector layer QGIS?

While vector features use geometry (points, polylines and polygons) to represent the real world, raster data takes a different approach. Rasters are made up of a matrix of pixels (also called cells), each containing a value that represents the conditions for the area covered by that cell (see figure_raster).

How do I delete part of a polygon in QGIS?

4 Answers

1. Select your layer.
2. Enabled Editing.
3. Choose the Vertex Tool (previous known as the ‘node tool’)
4. Click a point on your polygon.
5. Use Command-click & drag to select multiple points with the marquee tool. ( might be shift-click on Windows)
6. Use Delete key to delete the selected points (Fn+Delete on MacBook Pro)

How do I edit a raster layer in QGIS?

Editing DEM pixels values in QGIS using Serval Plugin

1. Probe button allows you to check the cell values in the raster.
2. Drawing button activate the ability to modify the values of a raster cell.
3. Clicking on the Set raster cell values to NoData button and then in the raster file will set the clicked raster cells to NoData.

How do I cut a raster layer in GIS?

Here are the steps to clip rasters using the Image Analysis toolbar in ArcGIS:

1. Enable Image Analysis Toolbar. Enable the Image Analysis Toolbar (Windows > Image Analysis).
2. Select Raster to Clip. In the image analysis toolbar, select the raster that you want to clip.
3. Select Polygon Boundary to Clip To.
4. Click Clip Icon.

How do I delete a part in QGIS?

Quote from video: Table. And select select it like that it's another once this is done all i have to do is to trash it i can trash it here or here so i can't see it on the string.

Is there an erase tool in QGIS?

If you want to erase features, this tool is available in both ArcGIS and QGIS. In ArcGIS, you can find this tool in the Analysis Tools within the Overlay Toolset. The input features are what you want to erase. The erase features define what will be used to erase the input features.
 

How do I delete data from raster?

Quote from video:

How do I crop a raster?

Crop a Raster Using Vector Extent



We can use the crop() function to crop a raster to the extent of another spatial object. To do this, we need to specify the raster to be cropped and the spatial object that will be used to crop the raster. R will use the extent of the spatial object as the cropping boundary.

Can you clip a raster image?

An existing raster or vector layer can be used as the clip extent. If you are using a feature class as the output extent, you have the option to clip the raster by the minimum bounding rectangle of the feature class or by the polygon geometry of the features.

How do I crop a GeoTIFF?

These borders need to be removed.

1. GeoTIFF in Global Mapper with collar overlap.
2. Select each of the rasters in the Control Center by right-clicking in the Control Center box and choosing Select All Onscreen Layers.
3. Right-click again and select Options…
4. In the resulting Raster Options dialogue box, select the Cropping tab.