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1. 安装库rpy21. 下载与本地对应python版本模块,pip install rpy2是安装不上的 下载地址是:http://www.lfd.uci.edu/~gohlke/pythonlibs/#rpy2 这是python下包的专用地址 需要下载版本和平台都相对应的whl包,我下的是rpy2-2.9.4-cp36-cp36m-win32.whl 如果还不行,参考:https://www.cnblogs.com/caiyishuai/p/9520214.html 2. 安装broom --》R语言的一个库--》与R脚本有关,可以忽略install.packages('broom')
3. 写R脚本library(broom) test <- function() { # x <- c(1:1200000) # y <- c(1:1200000) x <- c(151, 174, 138, 186, 128, 136, 179, 163, 152, 131) y <- c(63, 81, 56, 91, 47, 57, 76, 72, 62, 48) relation <- lm(y ~ x) data <- summary(relation) data_dict <- c() newData <- c(data) data_dict["residuals"] <- newData["residuals"] data_dict["coefficients"] = newData["coefficients"] data_dict["aliased"] = newData["aliased"] data_dict["sigma"] = newData["sigma"] data_dict["df"] = newData["df"] data_dict["r.squared"] = newData["r.squared"] data_dict["adj.r.squared"] = newData["adj.r.squared"] data_dict["fstatistic"] = newData["fstatistic"] data_dict["cov.unscaled"] = newData["cov.unscaled"] data_dict["p.value"] = c(broom::glance(data))["p.value"] return(data_dict) } # result <- test() # print(result)
4. 写python脚本报错: RuntimeError: R_USER not defined. 解决方案,各种搜索都是环境变量的问题,于是我各种加 还tm不行..........................................又懒得重启 stackflow找到答案 os模块的运用,直接看脚本
import os os.environ['R_HOME'] = r'C:\Program Files\R\R-3.6.0' os.environ['R_USER'] = r'C:\python3.6.3\Lib\site-packages\rpy2' #path depe import rpy2.robjects as robjects # ----------------------------------------------> 一定要注意这句,不能放到最上面,因为要先添加环境变量,才能找到这个rpy2。一定要注意 robjects.r.source(r'C:\code\r_test\test_one\test.R') a = robjects.r('test()') print(type(a)) # print(list(a)) from pandas import DataFrame print(a[0]) print(a[0][0])
打印结果,以及转换数据类型,参考:http://rpy.sourceforge.net/rpy2/doc-2.2/html/vector.html#creating-vectors https://blog.csdn.net/suzyu12345/article/details/50587267
5. python传值给R脚本,如何实现, 形参方法1R脚本: 这个脚本的关键在于如何将list转换为c library(broom) test <- function(list_data) { # print(list_data) # print(class(list_data)) # r语言list 转换成 vector: v = as.vector(unlist(你的list)) x = c(as.vector(unlist(list_data['x']))) y = c(as.vector(unlist(list_data['y']))) relation <- lm(y ~ x) data <- summary(relation) print(data) return(0) }
python脚本 import os os.environ['R_HOME'] = r'C:\Program Files\R\R-3.6.0' os.environ['R_USER'] = r'C:\python3.6.3\Lib\site-packages\rpy2' #path depe from pandas import DataFrame as df import rpy2.robjects as robjects import time robjects.r.source(r'C:\code\r_test\test_one\test.R') time1 = time.time() y = robjects.ListVector({ "x":[1, 2, 3], "y":[1, 2, 3], # 这里可以给float }) a = robjects.r["test"](y)
6. python传值给R脚本,如何实现, 形参方法2:类似python的argsR语言脚本 library(broom) test <- function(...) { list_data <- list(...) # 类似python的args,可以传递多个参数 print(list_data) print(class(list_data)) x = c(as.vector(unlist(list_data[1]))) # 注意R是从1开始的 y = c(as.vector(unlist(list_data[2]))) print(x) print(y) relation <- lm(y ~ x) data <- summary(relation) print(data) return(0) } python语言 import os os.environ['R_HOME'] = r'C:\Program Files\R\R-3.6.0' os.environ['R_USER'] = r'C:\python3.6.3\Lib\site-packages\rpy2' #path depe from pandas import DataFrame as df import rpy2.robjects as robjects import time robjects.r.source(r'C:\code\r_test\test_one\test.R') x = robjects.IntVector([151, 174, 138, 186, 128, 136, 179, 163, 152, 131]) y = robjects.IntVector([63, 81, 56, 91, 47, 57, 76, 72, 62, 48]) a = robjects.r["test"](x, y)
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