price_cols = paste0("price", 1:3) market_data[, (price_cols) := lapply(1:3, function(i) round(price + rnorm(.N, 0, 5), 2))] head(market_data) #> date price volume price1 price2 price3 #> 1: 2015-05-01 29.2 4021 30.6 27.4 33.2 #> 2: 2015-05-02 28.9 4000 29.7 20...
R语言通过function指令来创建自定义函数。 自定义函数结构如下:myfunction <- function(arg1, arg2, ... ){ statements return(object)} 。其中函数名称为myfunction,arg1、 arg2是参数,statements是函数语句,return(object)是返回结果。 args()函数可以查看函数的参数列表。 案例数据集如下: set.seed(45) library...
document.getElementById("excelOut2").download = "导出excel哦";//指定导出的Excel文件名称document.getElementById("excelOut2").href = uri + base64(template);//使用a标签的download属性可以指定导出的Excel文件名}//输出base64编码functionbase64 (s) {returnwindow.btoa(unescape(encodeURIComponent(s)))...
label: The default row labels are the variable names or labels (if the dataset has been labeled, for example, using the Hmisc library label() function). Use this option to change the row headers. #默认的行标签是变量名或标签(如果数据集已被标记,例如,使用Hmisc库标签()函数)。使用此选项可以...
uit = uitable(parent) creates a table in the specified parent container. The parent container can be a figure created with either the figure or uifigure function or a child container such as a panel. uit = uitable(___,Name,Value) specifies table properties using one or more name-value ...
The table function uses the workspace variable names as the names of the table variables in T. A table variable can have multiple columns. For example, the BloodPressure variable in T is a 5-by-2 array. Get T = table(LastName,Age,Smoker,Height,Weight,BloodPressure) T=5×6 table ...
The HTML rendering of the same two pivot tables shown above (each constructed using both a quick-pivot function and verbose syntax) is: library(pivottabler) qhpvt(bhmtrains,"TOC","TrainCategory","n()") library(pivottabler)pt<-PivotTable$new()pt$addData(bhmtrains)pt$addColumnDataGroups(...
The sample_BankAccount table is eligible to be a primary table in a one-to-many relationship. CanBeReferencing Function tells you whether a table can be the referencing table in a one-to-many relationship. The referencing table is the table that has a Lookup column added to it to b...
Table functions return a collection type instance and can be queried like a table by calling the function in the FROM clause of a query. Table functions use the TABLE keyword.The following example shows a table function GetBooks that takes a CLOB as input and returns an instance of the ...
The field setting of an indicator field added in the Table Property area only takes effect on the current indicator field, not the charts. Dimension Field Setting in the Drill Directory The Data Drilling function allows you to set each dimension field in the drill directory separately....