From: http://www.cookbook-r.com/Graphs/Multiple_graphs_on_one_page_(ggplot2)/ library(ggplot2) multiplot(p1, p2, p3, p4, cols=2) # Multiple plot function## ggplot objects can be passed in ..., or to plotlist (as a list of ggplot objects)# - cols: Num…

from http://pundit.pratt.duke.edu/wiki/MATLAB:Plotting The plot Function The plot function is used to plot sets of data on a 2-D grid. What follows comes from MATLAB's help function in MATLAB R2009a[1] (some paragraphs have been snipped out). The lin…

OPEN CASCADE Multiple Variable Function eryar@163.com Abstract. Multiple variable function with gradient and Hessian matrix is very very import in OPEN CASCADE optimization algorithms. In order to understand these optimization algorithm better, let’s…

先前讲解了简单绘图方法: http://www.cnblogs.com/youxin/p/3859923.html x = 0:pi/100:2*pi; y = sin(x); plot(x,y)下面例子: This example shows how to create a simple line graph. Use the linspace function to define x as a vector of 100 linearly spaced values between 0 an…

下载iso镜像: ISO镜像下载地址链接: http://pan.baidu.com/s/1i31bu5J 密码: obo1 单独破解文件下载链接: http://pan.baidu.com/s/1c0CGQsw 密码: h98h安装及破解步骤1) 运行"X:\setup.exe"或者运行 "X:\bin\win32\setup.exe" (如果你想在64位操作系统上安装32位的MATLAB)2) 选择 "install manually without…

如何判断我们的线性回归模型是正确的? 1.回归诊断的基本方法opar<-par(no.readOnly=TRUE) fit <- lm(weight ~ height, data = women)par(mfrow = c(2, 2))plot(fit)par(opar) 为理解这些图形,我们来回顾一下OLS回归的统计假设.(1)正态性(主要使用QQ图) 当预测变量值固定时,因变量成正态分布,则残差值也应该是一个均值为0的正态分布.正态Q-Q图(Normal Q-Q,右上)是在正态分布对应的值…

Ref: http://blog.csdn.net/u013534498/article/details/51399035 如何在Python中实现这五类强大的概率分布 考虑下在mgrid上画二维概率分布. 日后整理. 首先说明一下这里的三个变量分别是k(x轴).b(y轴)以及ErrorArray(z轴). 这次也不让Err=∑{i=1~n}([yi-(k*xi+b)] ^2)了,来个简单的吧,假设f(k,b)=3k^2+2b+1,k轴范围为1~3,b轴范围为4~6: [step1:k扩展](朝…

https://github.com/Jialab-UCR/GDCRNATools GDCRNATools - An R package for downloading, organizing, and integrative analyzing lncRNA, mRNA, and miRNA data in GDC Introduction The Genomic Data Commons (GDC) maintains standardized genomic, clinical, and…

R in Nutshell 前言 例子(nutshell包) 本书中的例子包括在nutshell的R包中,使用数据,需加载nutshell包 install.packages("nutshell") 第一部分:基础 第一章 批处理(Batch Mode) R provides a way to run a large set of commands in sequence and save the results to a file. 以batch mode运行R的一种方式是:使用系统…

R中的线性回归函数比较简单,就是lm(),比较复杂的是对线性模型的诊断和调整.这里结合Statistical Learning和杜克大学的Data Analysis and Statistical Inference的章节以及<R语言实战>的OLS(Ordinary Least Square)回归模型章节来总结一下,诊断多元线性回归模型的操作分析步骤.   1.选择预测变量   因变量比较容易确定,多元回归模型中难在自变量的选择.自变量选择主要可分为向前选择(逐次加使RSS最小的自变量),向后…