scalanlp/breeze

Contour plots

Open

#365 创建于 2015年2月15日

在 GitHub 查看
 (4 评论) (0 反应) (0 负责人)Scala (3,453 star) (690 fork)batch import
help wantedprojectviz

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!

贡献者指南

技术栈
scala
领域
data
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
over 1 week
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Scala basicsBreeze plotting basics
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
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.