你可以使用str_which函数来实现。例如:R library(stringr) vector <- c("apple", "banana", "cherry", "date") position <- str_which(vector, "a") print(position) # 输出:1在这个例子中,str_which函数会在向量vector中查找第一个包含字母"a"的元素,并返回该元素的位置。在这个例子中,第一个元素"a...
fruit <- c("apple","banana","pear","pineapple")str_which(fruit,"a")#> [1] 1 2 3 4# Elements that don't matchstr_which(fruit,"^p", negate =TRUE)#> [1] 1 2# Missings never matchstr_which(c("a",NA,"b"),".")#> [1] 1 3...
问将str_which循环的输出保存在R中EN我使用的是一张列出各种科学出版物的数据。行是出版物，列是描述...
问使用tidyverse中使用grep或str_which的方法创建多个新变量EN我有一个包含多份问卷的数据集。在下面的例...
[ERROR] RUNTIME(741630,matmul_custom_npu):2024-01-10-11:21:24.447.263 [device_error_proc.cc:1150]741630 ProcessStarsCoreErrorInfo:The extend info: errcode:(0x10, 0, 0) errorStr: Illegal instruction, which is usually caused by unaligned UUB addresses. fixp_error0 info: 0xb5d1383, fixp...
@文心快码BaiduComatetypeerror: loop of ufunc does not support argument 0 of type str which has n 文心快码BaiduComate 1. 解释TypeError异常的一般含义 TypeError 是Python 中一个常见的异常类型,它表示一个操作或函数调用接收到了不适当类型的参数。这种异常通常发生在尝试对某个对象执行不支持的操作时,比如对...
as they mature - which is part of the joy of owning plants. “40," Spoelstr a says. “It can bring a new interest and focus into people's lives and help to make the link between home and nature. " A. All plants are different B. Not only do they look beautiful C. There are ...
句中,which的无语是什么?Markets have lost faith that the euro zone's economices,weaker or stronger,will one day converge thanks to the discipline of sharing a single currency,which denies uncompetitive members the quick fix of devaluation.翻译下句子, 答案 市场已经失去信心,地区经济,更软弱或者更强...
AttributeError: Can only use .str accessor with string values, which use np.object_ dtype in pandas 忘记网址了…… 问题: 分析思路与解决方法:
1 test_behavior_A["var3"]=test_behavior_A["var3"].str.strip("M").astype("float") 上述代码改为: 1 test_behavior_A["var3"]=test_behavior_A["var3"].astype(str).strip("M").astype("float") 既然无论如何时间都会过去,为什么不选择做些有意义的事情呢...