Creates a string or bitmap message initially showing label. If label is a bitmap, and if the bitmap has a mask (see get-loaded-mask in bitmap%) that is the same size as the bitmap, then the …

如果你想特别快地了解Racket语言，从这里开始：《快速：用图片介绍Racket》《 Quick: An Introduction to Racket with Pictures》这部分。 第2章简要介绍Racket语言。 从第3章开始，本 …

Racket 是一种通用的编程语言，同时还是世界上第一个用于开发和部署新语言的生态系统。 创造您 梦想中的语言 ，或使用已有的 多种语言 ，例如： #lang racket [点击展开]

如果你想要对 Racket 有一个大概的了解， 请参阅 Quick: An Introduction to Racket with Pictures。 本指南的 第二章 对 Racket 进行了简单的介绍。 从 第三章 开始，本指南将深入细 …

I want to see AA, BB, and CC on the X axis, and one or more dots above each label. This page ( docs.racket-lang.org/plot/ticks_and_transforms.html ) has methods for numeric, date, time and …

2020年2月14日 · Updated the 2D and 3D plot procedures to accept a picture (from the pict library) or a string as the label for the `#:title` and`#:{x,y,z}-label`` keywords, as well as the …

This tutorial provides a brief introduction to the Racket programming language by using one of its picture-drawing libraries. Even if you don’t intend to use Racket for your artistic endeavours, …

If you want an especially quick introduction to Racket, start with Quick: An Introduction to Racket with Pictures. Chapter 2 provides a brief introduction to Racket. From Chapter 3 on, this guide …

2023年6月1日 · Various plotting tools (Excel, Matplotlib, Matlab, etc) support the use of markers in a line plot, which can then be represented in the legend. Typically these tools support markers …

2013年4月27日 · #lang racket (require racket/gui) (define frame (new frame% [label "frame"])) (define field-1 (new text-field% [label "field-1"] [parent frame])) ;; add field to frame (define field …