scalanlp/breeze

Contour plots

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#365 建立於 2015年2月15日

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 (4 留言) (0 反應) (0 負責人)Scala (3,453 star) (690 fork)batch import
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描述

Hi @dlwh,

is it possible to draw contour plots like in octave, e.g. contour(u, v, z, [0, 0], 'LineWidth', 2)? I wanted to draw a polynomial decision boundary for logistic regression with scala/breeze like this: bildschirmfoto 2015-02-15 um 22 36 54

The scatter plot for the data works fine, but I cant find a way to plot such a decision boundary.

Many thanks in advance!

貢獻者指南

技術棧
scala
領域
data
議題類型
feature
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。
over 1 week
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。
stale
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
Scala basicsBreeze plotting 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。
20
研究方向
The issue asks for contour plot functionality in Breeze, a Scala numerical library. The first step is to explore the current plotting API, which is likely in the 'plot' package (e.g., breeze.plot.*). Check if there are any previous discussions or branches that attempted this. Since the library has not added this feature in many years, it may require significant new code or integration with an external library like JFreeChart or Plotly. Look at how scatter plots and line plots are implemented for guidance.