I have some XYZ bathymetry data in an irregular, non north-up pattern -- i.e. not gridded. It is saved as a CSV file.
I can import the data into QGIS as Delimited and save as a Vector. What I want to be able to do is use the various Contour, slope analysis, Shaded relief etc tools. What do I need to do? Most of the answers I have found need either gridded data or externally generated raster files.
I have found this, but I don't know how I go about using it. https://www.gdal.org/gdal_grid.html