Treemaps

[mofojed]

• Add treemap support
• Requires Treemaps deephaven-core#2560

Snippet used for testing:

from deephaven.csv import read
from deephaven import new_table, merge, time_table
from deephaven.column import string_col, long_col, double_col
from deephaven.plot import Figure
from deephaven.constants import NULL_DOUBLE, NULL_LONG
from deephaven.plot.color import Color
​
s_and_p = read('/data/Stocks in the SP 500 Index.csv')\
    .view([
        "Symbol",
        "Description",
        "Sector=GICS_Sector.toLowerCase()",
        "MarketCap=Long.parseLong(Market_cap.replaceAll(`[$,]`, ``))"])
​
sectors = sector_items = s_and_p\
    .select_distinct(["Sector"])\
    .sort(["Sector"])
​
sector_items = sectors\
    .view([
        "Parent=`root`",
        "Label=Sector",
        "Value=(long)0",
        "Color=`#373438`",
        "Text=Sector",
        "HoverText=Sector"])
​
def heatmap_daily_perc(perc):
    if perc < -0.02:
        return '#f95d84'
    if perc < -0.01:
        return '#f37e3f'
    if perc > 0.01:
        return '#9edc6f'
    return '#fcd65b'
​
ticks = time_table('00:00:01').view("N=i").last_by()
​
stock_items = s_and_p\
    .update([
        "Perc=randomGaussian(0, 2)/100.0",
        "PercLabel=String.format(`%.1f%%`, Perc*100)"])\
    .natural_join(ticks, [])\
    .view([
        "Parent=Sector",
        "Label=Symbol",
        "Value=(long)(MarketCap*pow(1+Perc,N))",
        "Color=(String)heatmap_daily_perc(Perc)",
        "Text=PercLabel",
        "HoverText=Description + `: ` + PercLabel"])
​
items = merge([sector_items, stock_items])
​
s_and_p_tree_map = Figure().plot_tree_map(
    t = items,
    series_name = "S&P 500 Daily Change",
    hover_text_column = "HoverText",
    ids_column = "Label",
    labels_column = "Label",
    parents_column = "Parent",
    text_column = "Text",
    values_column = "Value",
    color = "Color",
).show()
​
del items, stock_items, ticks, sector_items, sectors, s_and_p

[codecov]

Codecov Report

Merging #545 (5780154) into main (a3f37ab) will decrease coverage by 0.02%.
The diff coverage is 23.25%.

@@            Coverage Diff             @@
##             main     #545      +/-   ##
==========================================
- Coverage   35.76%   35.73%   -0.03%     
==========================================
  Files         396      396              
  Lines       29183    29215      +32     
  Branches     6957     6973      +16     
==========================================
+ Hits        10436    10441       +5     
- Misses      18561    18587      +26     
- Partials      186      187       +1     

Flag	Coverage Δ
unit	35.73% <23.25%> (-0.03%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/chart/src/plotly/Plotly.js	0.00% <0.00%> (ø)
packages/chart/src/ChartUtils.js	60.35% <20.00%> (-2.72%)	⬇️
packages/chart/src/FigureChartModel.js	54.81% <100.00%> (ø)

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