Bug: fix sampling when not given #1143

	name: PyLops

	on: [push, pull_request]

	jobs:
	build:
	strategy:
	matrix:
	platform: [ ubuntu-latest, macos-13 ]
	python-version: ["3.9", "3.10", "3.11"]

	runs-on: ${{ matrix.platform }}
	steps:
	- uses: actions/checkout@v4
	- name: Get history and tags for SCM versioning to work
	run: \|
	git fetch --prune --unshallow
	git fetch --depth=1 origin +refs/tags/:refs/tags/
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip setuptools
	pip install flake8 pytest
	pip install -r requirements-dev.txt
	pip install -r requirements-torch.txt
	- name: Install pylops
	run: \|
	python -m setuptools_scm
	pip install .
	- name: Test with pytest
	run: \|
	pytest

Provide feedback