pix2py 0.1.1

A python package to plot pixelmaps generated by Domino.

pix2py

A python package to plot pixelmaps generated by Theriak-Domino using matplotlib.

Installation

The latest version of pix2py can be installed using pip:

pip install pix2py

Quickstart

In your Python script or notebook you must first import PixelMap from pix2py.

from pix2py import PixelMap

To use pix2py, you need to have a pixelmap folder called _pixelmaps generated by Domino in your working directory. Or you can specify the path to the pixelmap folder:

from pathlib import Path

pixelmap_dir = Path("{path_to_pixelmap_folder}", "_pixelmaps")

Since the individual pixelmaps for solid solution phases are named after the dominant endmember, you need to provide a dictionary to map a phase name to all endmember names for that phase in the thermodynamic database used to generate the pixelmaps.
This dictionary has the general form: ENDMEMBER_DICT = {"phase_name": "endmember1, endmember2, ...", ...}. Create a local dictionary for the project by:

LOCAL_ENDMEMBER_DICT = {}
LOCAL_ENDMEMBER_DICT["biotite"] = "phl", "annm", "obi", "east", "tbi", "fbi", "mnbi"

Additonal phases can be added to the dictionary as needed:

LOCAL_ENDMEMBER_DICT["LIQtc6"] = "q4L", "abL", "kspL", "anL", "slL", "fo2L", "fa2L", "h2oL"

Next, set up a pixelmap object by passing the path to the pixelmap folder and the endmember dictionary.

pixmap = PixelMap(pixelmap_dir, LOCAL_ENDMEMBER_DICT)

To plot a pixelmap, use the plot_pixelmap method of the pixelmap object. The method takes a variable to plot (variable) the phase name (mineral) as input arguments and returns a matplotlib figure object and ax object.

pixmap.plot_pixelmap("vol", mineral="LIQtc6")

To plot isolines, use the plot_isolines method of the pixelmap object. The method takes a variable to plot (variable) and the phase name (mineral) as input arguments and returns a matplotlib figure object and ax object.

pixmap.plot_isolines("vol", mineral="LIQtc6")

Capture the figure and ax objects to save or further customise the plotted pixelmap.

fig, ax = pixmap.plot_pixelmap("vol", mineral="LIQtc6")
fig.savefig("LIQtc6_vol.png", dpi=300)

You can use matplotlib's functions to further customise the plotted pixelmap.

fig, ax = pixmap.plot_pixelmap("vol", mineral="LIQtc6")
ax.set_title("LIQtc6 Volume Fraction")

Full Example

from pix2py import PixelMap
from pathlib import Path

pixelmap_dir = Path("{path_to_pixelmap_folder}", "_pixelmaps")

LOCAL_ENDMEMBER_DICT = {}
LOCAL_ENDMEMBER_DICT["biotite"] = "phl", "annm", "obi", "east", "tbi", "fbi", "mnbi"

pixmap = PixelMap(pixelmap_dir, LOCAL_ENDMEMBER_DICT)

fig, ax = pixmap.plot_pixelmap("#Mg", mineral="biotite")
fig.savefig("Biotite_Mg.png", dpi=300)