pygridsio 0.3.20

This is a utility package to read in .zmap and .asc grids to numpy or xarrays

pygridsio

Introduction

This is a python submodule containing IO functionality for reading and writing .asc, .zmap .nc and .tif grids.

Installation

pygridsio is available via the pypi package registry:

pip install pygridsio

Usage

from pygridsio import *

The standard grid class used throughout this project is a Xarray DataArray (see: https://xarray.dev/) with 2 dimensions: x and y.

To read a grid file to this class use:

grid = read_grid(filename)

You can write a grid to .asc, .zmap, .nc or .tif using the following method:

write_grid(grid,filename)

The code will discern which filetype to write out to by the file extension in filename. Note: .asc and .zmap are ascii based files and take up a lot of space. .nc and .tif are binary file types.

There is some plotting functionality implemented in pygridsio, this can be accessed using the pygridsio.grid_plotting module:

• The method pygridsio.grid_plotting.plot_grid allows you to plot a custom Grid class, or xr.DataArray with multiple options. See the description of the method for more detail.
• The method pygridsio.grid_plotting.plot_grid_comparison Creates a plot comparing two grids values against each other. See the description of the method for more detail.
• The method pygridsio.grid_plotting.make_interactive_plot Creates a interactive .html plot using plotly, this saves to a .html file

Poetry

For developing this package further you can use the poetry pacakge manager. Install poetry here: https://python-poetry.org/docs/ (note: if you can't run poetry from your terminal, ensure that the poetry.exe is in your environment variables).

Then after cloning this repo to your local machine, run: poetry install

Which will install a virtual environment in the gitlab repo.

Verify Installation

You can verify the installation of the different python packages by running the tests stored in tests. In pycharm: Right-click on the folder marked tests and click on Run python tests in test

publishing the project to gitlab

First configure the connection between poetry and the gitlab package registry: poetry config repositories.gitlab_pygridsio https://YOURGITLABLOCATION/gitlab/api/v4/projects/17422/packages/pypi

Add your own personal access token details (https://docs.gitlab.com/ee/user/profile/personal_access_tokens.html): poetry publish --repository gitlab_pygridsio -u"token name" -p "token value"

Then you can build and publish the project as a new deployment in the package registry: poetry build poetry publish (make sure the version number you publish is unique)