使用Stata 进行数据处理十分便捷,其中的reshape命令就是用于实现数据形态之转换的,即 Convert data fromwidetolongform and vice versa。不论哪种数据形态,数据集中均包含两种形态下的全部信息,区别在于数据呈现的方式。 本文是对reshape命令的介绍,力图通过10个示例全面介绍该命令的使用方式以及需要注意的问题。 基本语...
destring String,gen(Str2Num)tostring Number,gen(Num2Str) 初学者总是容易将destring和encode混淆,其实两者的用途是有区别的: destring: Convert string variables to numeric variables and vice versa. encode: Encode string into numeric and vice versa. encode主要用于将数据进行编码、分组,将连续性变量转换成分组...
获取View的截图来做动画来达到动画流程的目的 原理:将View的内容画到一个Bitmap画布上,然后取出 下面封装了一个从View生成Bitmap的工具类 /** * 将View转换为Bitmap对象 */ public class ViewToBitmapUtil { private static final String TAG = "ViewToBitmapUtil"; public static Bitmap convertViewToBitmap...
请看看Stata对encode的说明:encode creates a new variable named newvar based on the string variable varname, creating, adding to, or just using (as necessary) the value label newvar or, if specified, name. Do not use encode if varname contains numbers that merely happen to be stored as s...
0: type not defined 1-244: string variable 251: byte 252: integer 253: long integer 254: float 255: double The result can be compared with the values in stata.StataVariableTypes enum type. Method VariableTypeArray() returns a data type array for all variables. [VB.NET] Imports System...
. . . Convert count-time data to survival-time data [ST] ltable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Life tables for survival data [ST] snapspan . . . . . . . . . . . . . . . . . ...
sysuse auto2, clearreplace make = "This is a long string..." in 1replace make = substr(make, 1, 6)compress24.用"trim"去掉字符串变量的前面和后面的空格:clear allinput str12 str"String A "" String B "" String C"endreplace str = trim(str)compress25.制作动画图表:sysuse uslifeexp, ...
My main argument is that user-written Stata packages are thesource of learningadvanced Stata programming. In general, any program - whether it is written by Stata staff or a Stata user - intends to solve a problem or facilitate a task. While other users can get benefit from using the progr...
Data management: How do I convert my ICD-9 codes from a string type to a numeric type? (Updated 26 June 2017) Statistics: What is the difference between "endogeneity" and "sample selection bias"? (Updated 26 June 2017) Statistics: How do I impose the restriction that rho is zero us...
replace make = "This is a long string..." in 1 replace make = substr(make, 1, 6) compress 24.用"trim"去掉字符串变量的前面和后面的空格: clear all input str12 str "String A " " String B " " String C" end replace str = trim(str) compress...