Some useful plotting styles

altair.py

import altair
def pastle():
    # Typography
    font = "Lato"
    # At Urban it's the same font for all text but it's good to keep them separate in case you want to change one later.
    labelFont = "Source Code Pro" 
    sourceFont = "Lato"    # Axes
    axisColor = "#000000"
    gridColor = "#4298bd"    # Colors
    main_palette = ['#8dd3c7', '#ffffb3', '#bebada',
                                        '#fb8072', '#80b1d3', '#fdb462',
                                        '#b3de69', '#fccde5', '#d9d9d9',
                                        '#bc80bd', '#ccebc5', '#ffed6f'
                   ]
    markColor = "#fff"
    sequential_palette = ["#cfe8f3", 
                          "#a2d4ec", 
                          "#73bfe2", 
                          "#46abdb", 
                          "#1696d2", 
                          "#12719e", 
                         ]
    
    return {
        
        # width and height are configured outside the config dict because they are Chart configurations/properties not chart-elements' configurations/properties.
        "width": 685, # from the guide
        "height": 380, # not in the guide
        "fill": "#ecf5f8",
        "config": {
            "view": {
                "fill": "#ecf5f8",
                "filled": True,
            },
            "title": {
                "fontSize": 18,
                "font": font,
                "anchor": "start", # equivalent of left-aligned.
                "fontColor": "#000000"
            },
            "axisX": {
                "domain": True,
                "domainColor": axisColor,
                "domainWidth": 1,
                "grid": True,
                "gridColor": gridColor,
                "gridOpacity": 0.5,
                "labelFont": labelFont,
                "labelFontSize": 12,
                "labelAngle": 0, 
                "tickColor": axisColor,
                "tickSize": 5, # default, including it just to show you can change it
                "titleFont": font,
                "titleFontSize": 16,
                "titlePadding": 10, # guessing, not specified in styleguide
                "title": "X Axis Title (units)", 
            },
            "axisY": {
                "domain": True,
                "grid": True,
                "gridColor": gridColor,
                "gridOpacity": 0.5,
                "gridWidth": 1,
                "labelFont": labelFont,
                "labelFontSize": 12,
                "labelAngle": 0, 
                "ticks": False, # even if you don't have a "domain" you need to turn these off.
                "titleFont": font,
                "titleFontSize": 16,
                "titlePadding": 10, # guessing, not specified in styleguide
                "title": "Y Axis Title (units)", 
                # titles are by default vertical left of axis so we need to hack this 
                # "titleAngle": 90, # horizontal
                #"titleY": -10, # move it up
                #"titleX": 0, # move it to the right so it aligns with the labels 
            },
            "range": {
                "category": main_palette,
                "diverging": sequential_palette,
            },
            "legend": {
                "labelFont": labelFont,
                "labelFontSize": 12,
                #"symbolType": "square", # just 'cause
                "symbolSize": 100, # default
                "titleFont": font,
                "titleFontSize": 12,
                "title": "", # set it to no-title by default
                #"orient": "top-left", # so it's right next to the y-axis
                #"offset": 0, # literally right next to the y-axis.
            },
            "view": {
                "stroke": "transparent", # altair uses gridlines to box the area where the data is visualized. This takes that off.
            },
            ### MARKS CONFIGURATIONS ###
            "area": {
               "fill": markColor,
           },
           "line": {
               "color": markColor,
               "stroke": markColor,
               "strokeWidth": 5,
           },
           "trail": {
               "color": markColor,
               "stroke": markColor,
               "strokeWidth": 0,
               "size": 1,
           },
           "path": {
               "stroke": markColor,
               "strokeWidth": 0.5,
           },
           "point": {
               "filled": True,
           },
           "text": {
               "font": sourceFont,
               "color": markColor,
               "fontSize": 11,
               "align": "right",
               "fontWeight": 400,
               "size": 11,
           }, 
           "bar": {
                "size": 40,
                "binSpacing": 1,
                "continuousBandSize": 30,
                "discreteBandSize": 30,
                "fill": markColor,
                "stroke": False,
            },}
    }

altair.themes.register("pastle", pastle)

plotting.py

"""
This file contains some code which is useful for plotting,
but if you're following the tutorials you shouldn't need to worry about it.
"""

from cycler import cycler

blueprint = {
    "xtick.labelsize":10,
    "xtick.major.size": 5,
    "xtick.minor.visible": True,
    "xtick.color": "k",
    "ytick.labelsize":10,
    "ytick.major.size": 5,
    "ytick.minor.visible": True,
    # Lines
    "lines.linewidth": 2,
    "axes.prop_cycle": cycler("color", ['#FFFFFF', '#CCCCCC', '#AAAAAA']),
    # Fonts
    "font.monospace": ["Source code pro"],
    "font.sans-serif": ["Source sans pro"],
    "font.family": "monospace",
    # Grid
    "axes.grid": True,
    "axes.grid.which": "both",
    "grid.color": "#CED8F7",
    "grid.alpha": 0.3,
    "grid.linestyle": "-",
    "grid.linewidth": 0.25,
    # Plot display
    "figure.dpi": 300,
    # Plot facecolors
    "axes.facecolor": "#11496f",
    "figure.facecolor": "#FFFFFFFF"
}

pastle = {
    "xtick.labelsize":10,
    "xtick.major.size": 5,
    "xtick.minor.visible": True,
    "xtick.color": "k",
    "ytick.labelsize":10,
    "ytick.major.size": 5,
    "ytick.minor.visible": True,
    # Lines
    "lines.linewidth": 2,
    "axes.prop_cycle": cycler("color", ['#8dd3c7', '#ffffb3', '#bebada',
                                        '#fb8072', '#80b1d3', '#fdb462',
                                        '#b3de69', '#fccde5', '#d9d9d9',
                                        '#bc80bd', '#ccebc5', '#ffed6f']),
    # Fonts
    "font.monospace": ["Source code pro"],
    "font.sans-serif": ["Source sans pro"],
    "font.family": "monospace",
    # Grid
    "grid.color": "#4298bd",
    "grid.alpha": 0.5,
    # Display
    "figure.dpi": 300,
    # Face colors
    "axes.facecolor": "#ecf5f8",
    "figure.facecolor": "#FFFFFFFF"
}