octave安装和基本使用
[TOC] Octabe install 推荐 使用Octave安装包安装. On Ubuntu, you can use: sudo apt-get update && sudo apt-get install octave On Fedora, you can use: sudo yum install octave-forge Octave 使用 官方文档 GNU Octave, version 4.2.2 Copyright (C) 2018 John W. Eaton and others. Octave was configured for "x86_64-pc-linux-gnu". ... For more information, visit http://www.octave.org/get-involved.html >> 1 ==2 ans = 0 >> 1~=2 ans = 1 # 9x9 随机 0~1 >> rand(9,9) ans = 0.3560386 0.4607871 0.8059847 0.2042094 0.2411058 0.9311803 0.8023873 0.8208079 0.9631931 0.4604231 0.0222901 0.6693275 0.5887816 0.0076518 0.1670580 0.6335819 0.1711659 0.1405882 0.0519485 0.3400714 0.2909762 0.3687556 0.7300303 0.3436051 0.1679526 0.2550348 0.0342722 0.9379501 0.7760394 0.0859048 0.3292712 0.2385854 0.8567406 0.2433711 0.8027390 0.4103872 0.8297066 0.5138018 0.3540072 0.7688630 0.7550758 0.0676738 0.3528168 0.5365513 0.8800598 0.3350162 0.8376844 0.7863446 0.6448189 0.1355422 0.0235755 0.2975952 0.2879286 0.8854084 0.2484960 0.2086548 0.4821656 0.5838678 0.2676164 0.8016253 0.5552146 0.2787187 0.7647289 0.7559019 0.2639478 0.4199944 0.5312557 0.5202589 0.7852354 0.5681352 0.1088001 0.6572705 0.9477478 0.4998028 0.4179308 0.0513819 0.8775790 0.5860457 0.3993368 0.3765168 0.2140254 >> ones(9,9) ans = 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 >> W = zeros(9,9); >> W W = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 >> rand(1, 2) ans = 0.76409 0.77792 >> sqrt(9) ans = 3 >> A = rand(1, 100000); >> hist(A, 20) ...