rstudio/gt

`cols_align_decimal()` does not work for scientific numbers

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#1,672 建立於 2024年5月21日

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 (0 留言) (0 反應) (1 負責人)R (2,146 star) (222 fork)batch import
Difficulty: [2] IntermediateEffort: [2] MediumFocus: HTML OutputGood First IssuePriority: [3] HighType: ☹︎ Bug

描述

When I apply cols_align_decimal() to a column that was formated using fmt_scientific(), the decimal point is not aligned (for rows where the power of 10 part is missing).

Reprex:

library(gt)
exibble["num"] |>
  gt() |>
  fmt_scientific() |>
  cols_align_decimal()

image

貢獻者指南

技術棧
無
領域
data
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
blocked
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
R programminggt package basics
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
30
研究方向
Investigate how `cols align decimal()` determines the position of the decimal point in formatted strings. Compare the output of `fmt scientific()` for numbers with and without an exponent part. The issue is that numbers without an exponent (e.g., 1.23) are not aligned because the function likely only looks for a decimal point and does not account for missing exponent padding. Examine the source files `R/cols align decimal.R` and `R/fmt scientific.R` to understand the logic. Consider adding a fallback to pad the string with spaces for the missing exponent part or adjust the text processing to handle both cases.