Stata Cond. Description cond(A) returns cond(A, 2). -cond ()- has either three
Description cond(A) returns cond(A, 2). -cond ()- has either three or four arguments. Such as in the following example: generate dollar_price=cond (foreign, price*1. This function will evaluate expression (s) you give, and will record a value/string you specify if the expression is Next, max () comes in and picks the largest value of X for the given ID, and stores that in the new variable last_surgical. In this way, an awkward problem is rendered trivial by exploiting two Stata facts: support for string results from cond() and the fact that inequalities make sense for strings. com> Re: using -cond- to create a indicator stata中使用cond命令生成新变量，缺失值不被识别,大佬们我用stata处理数据，根据条件筛选新建一个变量赋值下图是部门原始数据的截图，我的条件是 如果这一列>47就赋值为2，小于47 The cond () function can be used to create a new variable based on true/false parameters. How do I perform multiple operations on data records if a condition is met? This is a tutorial on the cond() function, giving explanations and examples and assessing its advantages and limitations. a=1 for female a=0 for Hello STATA Experts: I am trying to create a new variable based on the existence of certain conditions in two existing variables (see code below). The cond () function can be used to create a new variable based on true/false parameters. エクセルの作業でIF関数を使える事は、初心者脱却の登竜門である。当然、Stataでも様々な条件分岐が必要であり、その一つに「cond関数」 Dear Statalisters, I am trying to do a conditional transformation of a matrix, Specifically, I want a new matrix B that returns 1/x if x>1 and x if x このブログでは、統計解析ソフトStataのプログラミングのTipsや便利コマンドを紹介しています．Facebook groupでは、ちょっとした疑問や気 -cond ()- is a function, not a command. Values near 1 indicate that the matrix is well conditioned, Stata's main data model treats observations in rows and variables in columns quite differently, but rowwise problems also arise that require working against the grain. So cond () works exactly as described. The second problem is that "cond ()" does not accept a string comparison as its first argument. 33, price) cond 函数是 Stata 中一个非常实用的函数，它可以根据条件进行数据筛选和结果返回。 在使用 cond 函数时，需要注意条件的顺序和条件的覆盖，以确保结果的准确性。 Remarks and examples The condition number of a matrix A is cond = norm(A, p) × norm(A−1, p) These functions return missing when A is singular. The outer -cond ()- in your example is illegal because it has two. The tested condition implies that . This function will evaluate expression (s) you give, and will record a value/string you specify if the expression is I'm working with a labour force survey and want to attach to each observation a new variable recording the unemployment rate in the geographical region of that The first obvious problem is that "cond ()" does not work with "egen" but only with "gen". (missing). ), the fourth argument is never reached. −8e+307 to 8e+307 or missing; 0 ⇒ false, otherwise interpreted as true The same is true of all other functions in Stata and Mata, so why should cond () be any different? As I see it, you are misusing -cond ()- for. As I say, I think with these particular definitions of A, B, and C, this isn't All four can be collapsed into a single command with a bunch of cond () functions, which reduce readability. This column shows how to This is a tutorial on the cond () function, giving explanations and examples and assessing its advantages and limitations. In particular, cond () is not The equivalent of Excel's IF () in Stata is function cond (). In the wishes for Stata 14 thread a number of users including myself wished for an The maximum value of a variable seen so far in a sequence is the “record” to date, that is, at least when high values are hard to achieve (think of field events such Hi Statalist, I would like to generate a group which includes female-asian students and female-european students. It appears to be dropping most of the Stata中最常用的条件函数是 if 语句和 cond() 函数。 使用 if 语句时，通常的格式为： replace 变量 = 新值 if 条件，这里的 replace 命令用于更改现有变量的值， 条件 是一个表达式，仅当 References: using -cond- to create a indicator [was: Re: st: intcens: how to estimate mean and variance after intcens] From: Maarten Buis <maartenlbuis@gmail. This will prevent Stata from and-ing the last term of A with the first term of B rather than and-ing all of A with all of B. gen col = cond (pension == 1, cond (jub == 1, 1, 2)) The 下面是一个示例： gen newvar = cond (var1 > 0 & var2 < 10, 1, var1 < 0 & var2 > 20, 2, 3) 该代码将根据var1和var2的值生成新的变量newvar。如果var1>0且var2<10，则newvar取值1；如果var1<0 Caution: If the first argument to cond() is a logical expression, that is, cond(x>2,50,70,. another reason. cond(A, p) returns the value of the condition number of A for the specified norm p, where p may be 0, 1, 2, or .
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