本文介绍了ggplot2里面的功能与第二个美学:范围界定问题的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧! 问题描述 我有以下测试数据: structure(list(r = c(5.44702625911984,6.3431860464319,2.89023592667928, 6.66260769449341,7.5521021076857,5.50645078944005,6.70001850525037, 7.39615449137166,5.96032231142622,7.88929821115731,9.45119299499902, 6.13534105776075,7.79397401855071,5.24488870603935,4.53178061905952, 5.80573244536445,10.1194252475799,12.5794215385996,7.47503723957468, 7.8682648760597,15.7540766770233,14.9800818974568,14.5672865569748, 9.5347507057429,18.6791666362954,10.4588651710497,15.2076130678251, 10.5052588219606,13.1314628288852,12.8384811800557,10.9978569438483, 10.0197995395016,10.1479274794689,12.5864754383382,10.7985399338233, 11.1100572430765, 10.756576992292,9.17309427876051,10.0441987112265, 10.0652520950654),f1 =结构(c(2L,2L,2L,2L,2L,2L,2L, 2L,2L,2L,2L,2L,2L,2L ,2L,2L,2L,2L,2L,2L,1L,1L,1L, 1L,1L,1L,1L,1L, 1L,1L,1L,1L,1L,1L,1L,1L,1L,1L,1L, 1L),。标签= c(H,L),class =factor f2 =结构(c(1L, 1L,1L,1L,1L,1L,1L,1L,1L,1L,2L,2L,2L,2L,2L,2L,2L, 2L, 2L,2L,1L,1L,1L,1L,1L,1L,1L,1L,1L,1L,2L,2L,2L, 2L,2L,2L,2L,2L,2L,2L) =factor,.Label = c(Joe,Sally))),.Names = c(r,f1,f2),row.names = c(NA ,-40L ),class =data.frame) 以下函数它应该画点(它),并连接每个组的手段(它不): testFunc< - 公式[[3]] - 函数(公式= NULL,数据= NULL){ res< - as.character(公式[[2]]) fac1 #指定数据&美学p group = fac2)) #现在添加点p< - p + geom_point()#可以正常工作,如果我们在这里停止 #由于ggplot2_0.9.3中的错误,我们必须计算一些数量#并将它们放在一个单独的(数据[,res]〜data [,fac1] * data [,fac2],数据,FUN =平均)名称(avg)< - c(factor1,factor2,mean)p } 当我运行它时: ex print(ex) 出现此错误: eval(expr,envir,enclos):object'f2'not found 我似乎总是会有这些范围问题,任何广告副?我认为我正在为错误采取适当的解决方法。使用 aes 而不是 aes_string ,或者不引用 geom_line 不能解决它。当我遇到继承美学的麻烦时,我总是回去并从主 ggplot()调用不需要在那里。试试这个: testFunc< - function(formula = NULL,data = NULL){ res< - (formula [[2]]) fac1 fac2 #现在加点p group = fac2))#如果我们在这里停止,就可以正常工作 #由于ggplot2_0.9.3中的错误,我们必须计算一些数量#并将它们放在一个单独的数据框中(data [,res]〜data [,fac1] * data [,fac2],data,FUN = mean) names(avg)< - c (factor1,factor2,mean)p } I have the following test data:structure(list(r = c(5.44702625911984, 6.3431860464319, 2.89023592667928,6.66260769449341, 7.5521021076857, 5.50645078944005, 6.70001850525037,7.39615449137166, 5.96032231142622, 7.88929821115731, 9.45119299499902,6.13534105776075, 7.79397401855071, 5.24488870603935, 4.53178061905952,5.80573244536445, 10.1194252475799, 12.5794215385996, 7.47503723957468,7.8682648760597, 15.7540766770233, 14.9800818974568, 14.5672865569748,9.5347507057429, 18.6791666362954, 10.4588651710497, 15.2076130678251,10.5052588219606, 13.1314628288852, 12.8384811800557, 10.9978569438483,10.0197995395016, 10.1479274794689, 12.5864754383382, 10.7985399338233,11.1100572430765, 10.756576992292, 9.17309427876051, 10.0441987112265,10.0652520950654), f1 = structure(c(2L, 2L, 2L, 2L, 2L, 2L, 2L,2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 1L, 1L, 1L,1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,1L), .Label = c("H", "L"), class = "factor"), f2 = structure(c(1L,1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,2L, 2L, 2L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L,2L, 2L, 2L, 2L, 2L, 2L, 2L), class = "factor", .Label = c("Joe","Sally"))), .Names = c("r", "f1", "f2"), row.names = c(NA, -40L), class = "data.frame")And the following function which should draw the points (it does) and connect the means of each group (it doesn't):testFunc <- function(formula = NULL, data = NULL) { res <- as.character(formula[[2]]) fac1 <- as.character(formula[[3]][2]) fac2 <- as.character(formula[[3]][3]) # Specify the data & aesthetics p <- ggplot(data, aes_string(x = fac1, y = res, color = fac2, group = fac2)) # Now add points p <- p + geom_point() # works fine if we stop here # Due to a bug in ggplot2_0.9.3, we must calc some quantities # and put them in a separate data frame for a new aesthetic avg <- aggregate(data[,res] ~ data[,fac1]*data[, fac2], data, FUN = mean) names(avg) <- c("factor1", "factor2", "mean") p <- p + geom_line(aes_string(x = 'factor1', y = 'mean', group = 'factor2'), data = avg) }When I run it:ex <- testFunc(formula = r ~ f1*f2, data = td)print(ex)I get this error: Error in eval(expr, envir, enclos) : object 'f2' not foundI seem to always have these scoping problems, any advice? I thought I was following the appropriate work-around for the bug. Using aes instead of aes_string, or not quoting the variable names in geom_line doesn't fix it. Thanks. 解决方案 When I run into trouble with inherited aesthetics, I always go back and remove anything from the main ggplot() call that doesn't need to be there. Try this:testFunc <- function(formula = NULL, data = NULL) { res <- as.character(formula[[2]]) fac1 <- as.character(formula[[3]][2]) fac2 <- as.character(formula[[3]][3]) # Now add points p <- ggplot() + geom_point(data = data, aes_string(x = fac1, y = res, color = fac2, group = fac2)) # works fine if we stop here # Due to a bug in ggplot2_0.9.3, we must calc some quantities # and put them in a separate data frame for a new aesthetic avg <- aggregate(data[,res] ~ data[,fac1]*data[, fac2], data, FUN = mean) names(avg) <- c("factor1", "factor2", "mean") p <- p + geom_line(aes_string(x = 'factor1', y = 'mean', group = 'factor2'), data = avg) } 这篇关于ggplot2里面的功能与第二个美学:范围界定问题的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持! 09-09 12:20