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Choropleth: can't add/remove from current selection after zoom

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評估

難度
4/5
預估耗時
3-5 天
新手友好度
38/100
Issue 類型
缺陷
描述清晰度
基本清楚
活躍度
停滯
技術堆疊
javascript

研究方向

先從提供的 Plotly Express scatter 和 plotly.graph_objects Choropleth 重現開始,接著在 repository 中追蹤 choropleth 選取和地理縮放互動的進入點。確認現有的無縮放 shift-click 行為,並讓縮放後的情況保留並更新目前的選取;完成的標準是,提供的重現可以在縮放後移除一個多邊形,且該操作序列有 coverage。

由索引模型根據 Issue 內容生成。

描述

bug P3

I don't know if this is a bug or a missing feature, but i'd like to select polygons on a choropleth, zoom, then add/ remove from the current selection via shift+click.
This is especially useful when i want to remove a few central polygons from a big selection small polygons and need to select then zoom in to better see which few to remove.
This is already possible in (non-geographic) scatter plots: click to select, zoom, then shift-click to remove from selection, e.g.

import plotly.express as px

df = px.data.iris()
fig = px.scatter(df.iloc[:20], x="sepal_width", y="sepal_length")
fig.update_layout(clickmode="event+select")
fig.show()

And it's already possible in choropleths without zooming between selecting and shift-clicking.

Here's a code snippet to reproduce the bug (or missing feature).

import plotly.graph_objects as go

import pandas as pd
df = pd.read_csv('https://raw.githubusercontent.com/plotly/datasets/master/2011_us_ag_exports.csv')

fig = go.Figure(data=go.Choropleth(
    locations=df['code'], # Spatial coordinates
    z = df['total exports'].astype(float), # Data to be color-coded
    locationmode = 'USA-states', # set of locations match entries in `locations`
    colorscale = 'Reds',
    colorbar_title = "Millions USD",
))

fig.update_layout(
    title_text = '2011 US Agriculture Exports by State',
    geo_scope='usa', # limite map scope to USA
    clickmode="event+select",
)

fig.show()

Now box-select some polygons, then remove a polygon from the selection by shift-clicking it.
Works nicely.
Box-select some polygons again, zoom in, then try to remove a polygon from the selection by shift-clicking it.
No can do!

主要語言
JavaScript
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