mainPanel无法在Shiny Dashboard中工作
问题1：我尝试应用 shinyDashboard 包，但没有数据表显示......
## Creating a parallel computing Cluster and support functions.
## Preparing the parallel cluster using the cores
doParallel::registerDoParallel(cores = 16)
pkgs <- c('shiny','shinydashboard','magrittr','plyr','dplyr','googleVis','quantmod','TTR','lubridate','DT','purrr')
suppressMessages(require('BBmisc'))
suppressMessages(lib(pkgs)); rm(pkgs)
## Set the googleVis options first to change the behaviour of plot.gvis, so that only the chart
## component of the HTML file is written into the output file.
op <- options(gvis.plot.tag='chart')
tickers <- sort(c('BET', 'BOTB', 'BPTY', 'WMH', 'SPO', '888', 'NPT', 'PTEC', 'PCGE', 'TTR', 'GVC', 'WEB',
'BOX', 'RNK', 'LAD', 'STR', 'LVS', 'TNI', 'WYNN', 'MGM', 'MPEL', 'MCRI', 'GXYEY', 'BYD',
'GIGNY', 'CACQ', 'PENN', 'GEBHY', 'WYNMF', 'CWLDY', 'SCHYF', 'SKYZF', 'MCHVY', 'EGT',
'GPIC', 'SGMS', 'NGCRF', 'TACBY', 'IGT', 'GDEN', 'ISLE', 'GLXZ', 'SJMHF', 'PDSSF', 'PNK'))
ui <- dashboardPage(
dashboardHeader(title = "Dynamic sidebar"),
dashboardSidebar(),
dashboardBody(
fluidPage(
titlePanel('Stock Price'),
sidebarLayout(
sidebarPanel(
helpText('Select the stocks to examine. Information will be collected from Google/Yahoo finance.'),
checkboxGroupInput('counter', 'Select counter(s)', choices = tickers),
actionLink('selectall', 'Select/Unselect All'),
br(),
br(),
dateRangeInput('dates', 'Date range', start = '2013-01-01', end = as.character(Sys.Date())),
checkboxInput('log', 'Plot y axis on log scale', value = FALSE),
checkboxInput('adjust', 'Adjust prices for inflation', value = FALSE)),
mainPanel(
tabsetPanel( #tabBox
tabPanel('Table', dataTableOutput('table1'),
downloadButton('downloadData', 'Download')),
tabPanel('Chart', htmlOutput('gvis')))
)))
)
)
server <- function(input, output, session) {
observe({
if(input$selectall == 0) return(NULL)
else if(input$selectall%%2 == 0){
updateCheckboxGroupInput(session, 'counter', 'Select counter(s)', choices = tickers)
}else{
updateCheckboxGroupInput(session, 'counter', 'Select counter(s)', choices = tickers, selected = tickers)
}
})
getCounter <- function(){
tickers <- c('BET', 'BOTB', 'BPTY', 'WMH', 'SPO', '888', 'NPT', 'PTEC', 'PCGE', 'TTR', 'GVC', 'WEB',
'BOX', 'RNK', 'LAD', 'STR', 'LVS', 'TNI', 'WYNN', 'MGM', 'MPEL', 'MCRI', 'GXYEY', 'BYD',
'GIGNY', 'CACQ', 'PENN', 'GEBHY', 'WYNMF', 'CWLDY', 'SCHYF', 'SKYZF', 'MCHVY', 'EGT',
'GPIC', 'SGMS', 'NGCRF', 'TACBY', 'IGT', 'GDEN', 'ISLE', 'GLXZ', 'SJMHF', 'PDSSF', 'PNK') %>% sort
data <- llply(tickers, function(x) {
y = data.frame(Com=x, as.data.frame(
tryCatch(suppressAll(getSymbols(x, src = 'google', auto.assign = FALSE)), error = function(e)
data.frame(Open=NA, High=NA, Low=NA, Close=NA, Volume=NA))));
if(nrow(na.omit(y))==0) {
y = data.frame(Com=x, as.data.frame(
tryCatch(suppressAll(getSymbols(x, src = 'yahoo', auto.assign = FALSE)),
error = function(e) data.frame(Open=NA, High=NA, Low=NA, Close=NA, Volume=NA))))
}else{
y %<>% mutate(Date=as.character(rownames(.)), Weekday=factor(weekdays(ymd(Date))));
names(y) <- c('Com', 'Open', 'High', 'Low', 'Close', 'Volume', 'Date', 'Weekday')};
y}, .parallel=TRUE) %>% rbind_all %>% tbl_df %>%
select(Date, Weekday, Com, Open, High, Low, Close, Volume) %>% mutate(Com=factor(Com))
return(data)
}
output$table1 <- renderDataTable({
data <- getCounter()
df <- as.data.frame(subset(data, Com %in% input$counter & Date>=input$dates[1] & Date<=input$dates[2]));
dt <- datatable(df,
caption="Table 1.1.1 : Public Listed Companies Stock Price",
extensions = list("ColReorder"=NULL, "ColVis"=NULL, "TableTools"=NULL
#, "FixedColumns"=list(leftColumns=2)
),
options = list(autoWidth=TRUE,
oColReorder=list(realtime=TRUE), #oColVis=list(exclude=c(0, 1), activate='mouseover'),
oTableTools=list(
sSwfPath="//cdnjs.cloudflare.com/ajax/libs/datatables-tabletools/2.1.5/swf/copy_csv_xls.swf",
aButtons=list("copy", "print",
list(sExtends="collection", sButtonText="Save",
aButtons=c("csv","xls")))),
dom='CRTrilftp', scrollX=TRUE, scrollCollapse=TRUE,
colVis=list(exclude=c(0), activate='mouseover')))
return(dt)
})
output$gvis <- renderGvis({
data <- getCounter()
smp <- subset(data, Com %in% input$counter &
Date>=input$dates[1] & Date<=input$dates[2])
if(input$adjust) smp <- adjust(subset(data, Com %in% input$counter &
Date>=input$dates[1] & Date<=input$dates[2]))
if(input$log) smp <- mutate(subset(data, Com %in% input$counter,
Date>=input$dates[1] & Date<=input$dates[2]),
Low=log(Low), Open=log(Open), Close=log(Close), High=log(High))
gvisCandlestickChart(smp, xvar='Date', low='Low', open='Open', close='Close', high='High',
options=list(legend='none', gvis.editor="Edit me!"))
})
}
runApp(shinyApp(ui, server), display.mode='showcase')
以上代码不可行（注意： selectall 功能在没有编辑任何内容的情况下突然变得不可行）。虽然在没有shinydashboard的情况下使用mainPanel正常闪亮是可行的...有人遮住了我的光吗？
# server.R
suppressMessages(library('BBmisc'))
pkgs <- c('shiny', 'shinythemes', 'shinyjs', 'shinyBS', 'shinydashboard', 'shinyAce', 'quantmod',
'TTR', 'plyr', 'dplyr', 'magrittr', 'stringr', 'purrr', 'googleCharts', 'lubridate',
'googleVis', 'DT', 'sparkline', 'zoo')
suppressMessages(lib(pkgs))
rm(pkgs)
tickers <- c('BET', 'BOTB', 'BPTY', 'WMH', 'SPO', '888', 'NPT', 'PTEC', 'PCGE', 'TTR', 'GVC', 'WEB',
'BOX', 'RNK', 'LAD', 'STR', 'LVS', 'TNI', 'WYNN', 'MGM', 'MPEL', 'MCRI', 'GXYEY', 'BYD',
'GIGNY', 'CACQ', 'PENN', 'GEBHY', 'WYNMF', 'CWLDY', 'SCHYF', 'SKYZF', 'MCHVY', 'EGT',
'GPIC', 'SGMS', 'NGCRF', 'TACBY', 'IGT', 'GDEN', 'ISLE', 'GLXZ', 'SJMHF', 'PDSSF', 'PNK') %>% sort
data <- llply(tickers, function(x) {
y = data.frame(Com=x, as.data.frame(
tryCatch(suppressAll(getSymbols(x, src = 'google', auto.assign = FALSE)), error = function(e)
data.frame(Open=NA, High=NA, Low=NA, Close=NA, Volume=NA))));
if(nrow(na.omit(y))==0) {
y = data.frame(Com=x, as.data.frame(
tryCatch(suppressAll(getSymbols(x, src = 'yahoo', auto.assign = FALSE)),
error = function(e) data.frame(Open=NA, High=NA, Low=NA, Close=NA, Volume=NA))))
}else{
y %<>% mutate(Date=as.character(rownames(.)), Weekday=factor(weekdays(ymd(Date))));
names(y) <- c('Com', 'Open', 'High', 'Low', 'Close', 'Volume', 'Date', 'Weekday')};
y}, .parallel=TRUE) %>% rbind_all %>% tbl_df %>%
select(Date, Weekday, Com, Open, High, Low, Close, Volume) %>% mutate(Com=factor(Com))
#'@ googleChartsInit(chartTypes = c("ALL", "annotatedtimeline", "area", "bar", "bubble", "calendar", "candlestick",
#' "column", "combo", "gauge", "geo", "geomap", "intensitymap", "line", "map", "motion", "org", "pie", "sankey",
#' "scatter", "steppedarea", "table", "timeline", "treemap"))
## =================================================================================================
#'@ shiny::runApp(list(
ui = pageWithSidebar(
headerPanel("Example"),
sidebarPanel(
helpText('Select the stocks to examine. Information will be collected from Google/Yahoo finance.'),
checkboxGroupInput('counter', 'Select counter(s)', choices = tickers),
actionLink('selectall', 'Select/Unselect All'),
br(),
br(),
dateRangeInput('dates', 'Date range', start = '2013-01-01', end = as.character(Sys.Date())),
br(),
checkboxInput('log', 'Plot y axis on log scale', value = FALSE),
checkboxInput('adjust', 'Adjust prices for inflation', value = FALSE)),
mainPanel(
tabsetPanel(
tabPanel('Data', dataTableOutput('table1'),
downloadButton('downloadData', 'Download')),
tabPanel('Plot', htmlOutput('gvis')))
))#'@ ,
server = function(input, output, session) {
observe({
if(input$selectall == 0) return(NULL)
else if(input$selectall%%2 == 0){
updateCheckboxGroupInput(session, 'counter', 'Select counter(s)', choices = tickers)
}else{
updateCheckboxGroupInput(session, 'counter', 'Select counter(s)', choices = tickers, selected = tickers)
}
})
output$table1 <- renderDataTable({
datatable(subset(data, Com %in% input$counter & Date>=input$dates[1] & Date<=input$dates[2]),
caption="Table 1.1.1 : Public Listed Companies Stock Price",
extensions = list("ColReorder"=NULL, "ColVis"=NULL, "TableTools"=NULL
#, "FixedColumns"=list(leftColumns=2)
),
options = list(autoWidth=TRUE,
oColReorder=list(realtime=TRUE), #oColVis=list(exclude=c(0, 1), activate='mouseover'),
oTableTools=list(
sSwfPath="//cdnjs.cloudflare.com/ajax/libs/datatables-tabletools/2.1.5/swf/copy_csv_xls.swf",
aButtons=list("copy", "print",
list(sExtends="collection", sButtonText="Save",
aButtons=c("csv","xls")))),
dom='CRTrilftp', scrollX=TRUE, scrollCollapse=TRUE,
colVis=list(exclude=c(0), activate='mouseover')))
})
output$gvis <- renderGvis({
smp <- subset(data, Com %in% input$counter &
Date>=input$dates[1] & Date<=input$dates[2])
if(input$adjust) smp <- adjust(subset(data, Com %in% input$counter &
Date>=input$dates[1] & Date<=input$dates[2]))
if(input$log) smp <- mutate(subset(data, Com %in% input$counter,
Date>=input$dates[1] & Date<=input$dates[2]),
Low=log(Low), Open=log(Open), Close=log(Close), High=log(High))
gvisCandlestickChart(smp, xvar='Date', low='Low', open='Open', close='Close', high='High',
options=list(legend='none', gvis.editor="Edit me!"))
})
}
#'@ ))
# Run the application
shinyApp(ui = ui, server = server)
问题2：顺便说一下，当我发布到rstudioconnect和shinyapps部署网站时，piper函数还有另一个错误。我试图不使用piper函数，但rstudioconnect继续显示没有函数％＆gt;％找到。消息。
2 个答案:
答案 0 :(得分：0)
试试这个：
output$table1 <- renderDataTable({
a <- as.data.frame(subset(... ..) #your code
)
a }, options <your code>)
答案 1 :(得分：0)
## Creating a parallel computing Cluster and support functions.
## Preparing the parallel cluster using the cores
doParallel::registerDoParallel(cores = 16)
pkgs <- c('shiny','shinydashboard','magrittr','plyr','dplyr','googleVis','quantmod','TTR','lubridate','DT')
suppressMessages(require('BBmisc')); suppressMessages(lib(pkgs)); rm(pkgs)
## Set the googleVis options first to change the behaviour of plot.gvis, so that only the chart
## component of the HTML file is written into the output file.
op <- options(gvis.plot.tag='chart')
tickers <- sort(c('BET', 'BOTB', 'BPTY', 'WMH', 'SPO', '888', 'NPT', 'PTEC', 'PCGE', 'TTR', 'GVC', 'WEB',
'BOX', 'RNK', 'LAD', 'STR', 'LVS', 'TNI', 'WYNN', 'MGM', 'MPEL', 'MCRI', 'GXYEY', 'BYD',
'GIGNY', 'CACQ', 'PENN', 'GEBHY', 'WYNMF', 'CWLDY', 'SCHYF', 'SKYZF', 'MCHVY', 'EGT',
'GPIC', 'SGMS', 'NGCRF', 'TACBY', 'IGT', 'GDEN', 'ISLE', 'GLXZ', 'SJMHF', 'PDSSF', 'PNK'))
ui <- dashboardPage(
dashboardHeader(title = "Dynamic sidebar"),
dashboardSidebar(),
dashboardBody(
fluidPage(
titlePanel('Stock Price'),
sidebarLayout(
sidebarPanel(
helpText('Select the stocks to examine. Information will be collected from Google/Yahoo finance.'),
checkboxGroupInput('counter', 'Select counter(s)', choices = tickers),
actionLink('selectall', 'Select/Unselect All'),
br(),
br(),
dateRangeInput('dates', 'Date range', start = '2013-01-01', end = as.character(Sys.Date())),
checkboxInput('log', 'Plot y axis on log scale', value = FALSE),
checkboxInput('adjust', 'Adjust prices for inflation', value = FALSE)),
mainPanel(
tabsetPanel( #tabBox
tabPanel('Table', dataTableOutput('table1'),
downloadButton('downloadData', 'Download')),
tabPanel('Chart', htmlOutput('gvis')))
)))
)
)
server <- function(input, output, session) {
observe({
if(input$selectall == 0) return(NULL)
else if(input$selectall%%2 == 0){
updateCheckboxGroupInput(session, 'counter', 'Select counter(s)', choices = tickers)
}else{
updateCheckboxGroupInput(session, 'counter', 'Select counter(s)', choices = tickers, selected = tickers)
}
})
getCounter <- function(){
tickers <- c('BET', 'BOTB', 'BPTY', 'WMH', 'SPO', '888', 'NPT', 'PTEC', 'PCGE', 'TTR', 'GVC', 'WEB',
'BOX', 'RNK', 'LAD', 'STR', 'LVS', 'TNI', 'WYNN', 'MGM', 'MPEL', 'MCRI', 'GXYEY', 'BYD',
'GIGNY', 'CACQ', 'PENN', 'GEBHY', 'WYNMF', 'CWLDY', 'SCHYF', 'SKYZF', 'MCHVY', 'EGT',
'GPIC', 'SGMS', 'NGCRF', 'TACBY', 'IGT', 'GDEN', 'ISLE', 'GLXZ', 'SJMHF', 'PDSSF', 'PNK') %>% sort
data <- llply(tickers, function(x) {
y = data.frame(Com=x, as.data.frame(
tryCatch(suppressAll(getSymbols(x, src = 'google', auto.assign = FALSE)), error = function(e)
data.frame(Open=NA, High=NA, Low=NA, Close=NA, Volume=NA))));
if(nrow(na.omit(y))==0) {
y = data.frame(Com=x, as.data.frame(
tryCatch(suppressAll(getSymbols(x, src = 'yahoo', auto.assign = FALSE)),
error = function(e) data.frame(Open=NA, High=NA, Low=NA, Close=NA, Volume=NA))))
}else{
y %<>% mutate(Date=as.character(rownames(.)), Weekday=factor(weekdays(ymd(Date))));
names(y) <- c('Com', 'Open', 'High', 'Low', 'Close', 'Volume', 'Date', 'Weekday')};
y}, .parallel=TRUE) %>% rbind_all %>% tbl_df %>%
select(Date, Weekday, Com, Open, High, Low, Close, Volume) %>% mutate(Com=factor(Com))
return(data)
}
output$table1 <- renderDataTable({
data <- getCounter()
df <- as.data.frame(subset(data, Com %in% input$counter & Date>=input$dates[1] & Date<=input$dates[2]));
dt <- datatable(df,
caption="Table 1.1.1 : Public Listed Companies Stock Price",
extensions = list("ColReorder"=NULL, "ColVis"=NULL, "TableTools"=NULL
#, "FixedColumns"=list(leftColumns=2)
),
options = list(autoWidth=TRUE,
oColReorder=list(realtime=TRUE), #oColVis=list(exclude=c(0, 1), activate='mouseover'),
oTableTools=list(
sSwfPath="//cdnjs.cloudflare.com/ajax/libs/datatables-tabletools/2.1.5/swf/copy_csv_xls.swf",
aButtons=list("copy", "print",
list(sExtends="collection", sButtonText="Save",
aButtons=c("csv","xls")))),
dom='CRTrilftp', scrollX=TRUE, scrollCollapse=TRUE,
colVis=list(exclude=c(0), activate='mouseover')))
return(dt)
})
output$gvis <- renderGvis({
data <- getCounter()
smp <- subset(data, Com %in% input$counter &
Date>=input$dates[1] & Date<=input$dates[2])
if(input$adjust) smp <- adjust(subset(data, Com %in% input$counter &
Date>=input$dates[1] & Date<=input$dates[2]))
if(input$log) smp <- mutate(subset(data, Com %in% input$counter,
Date>=input$dates[1] & Date<=input$dates[2]),
Low=log(Low), Open=log(Open), Close=log(Close), High=log(High))
gvisCandlestickChart(smp, xvar='Date', low='Low', open='Open', close='Close', high='High',
options=list(legend='none', gvis.editor="Edit me!"))
})
}
runApp(shinyApp(ui, server), display.mode='showcase')
最后它是有效的...在这里我也发布了下面的链接截图。 但是，我想根据用户的选择直接搜索在线数据集，但不会对现有数据集进行子集。 http://cos.name/cn/topic/416837/#post-416909
下面我尝试根据用户的反应直接废弃数据集＆＃39;选择。然而，数据框工作正常，不适合shinyapp。
## Creating a parallel computing Cluster and support functions.
## Preparing the parallel cluster using the cores
doParallel::registerDoParallel(cores = 16)
pkgs <- c('shiny','shinydashboard','magrittr','plyr','dplyr','googleVis','quantmod','TTR','lubridate','DT','purrr')
suppressMessages(require('BBmisc'))
suppressMessages(lib(pkgs)); rm(pkgs)
## Set the googleVis options first to change the behaviour of plot.gvis, so that only the chart
## component of the HTML file is written into the output file.
op <- options(gvis.plot.tag='chart')
tickers <- sort(c('BET', 'BOTB', 'BPTY', 'WMH', 'SPO', '888', 'NPT', 'PTEC', 'PCGE', 'TTR', 'GVC', 'WEB',
'BOX', 'RNK', 'LAD', 'STR', 'LVS', 'TNI', 'WYNN', 'MGM', 'MPEL', 'MCRI', 'GXYEY', 'BYD',
'GIGNY', 'CACQ', 'PENN', 'GEBHY', 'WYNMF', 'CWLDY', 'SCHYF', 'SKYZF', 'MCHVY', 'EGT',
'GPIC', 'SGMS', 'NGCRF', 'TACBY', 'IGT', 'GDEN', 'ISLE', 'GLXZ', 'SJMHF', 'PDSSF', 'PNK'))
ui <- dashboardPage(
dashboardHeader(title = "Dynamic sidebar"),
dashboardSidebar(),
dashboardBody(
fluidPage(
titlePanel('Stock Price'),
sidebarLayout(
sidebarPanel(
helpText('Select the stocks to examine. Information will be collected from Google/Yahoo finance.'),
checkboxGroupInput('counter', 'Select counter(s)', choices = tickers),
actionLink('selectall', 'Select/Unselect All'),
br(),
br(),
dateRangeInput('dates', 'Date range', start = '2013-01-01', end = as.character(Sys.Date())),
checkboxInput('log', 'Plot y axis on log scale', value = FALSE),
checkboxInput('adjust', 'Adjust prices for inflation', value = FALSE)),
mainPanel(
tabsetPanel( #tabBox
tabPanel('Table', dataTableOutput('table1'),
downloadButton('downloadData', 'Download')),
tabPanel('Chart', htmlOutput('gvis')))
)))
)
)
server <- function(input, output, session) {
observe({
if(input$selectall == 0) return(NULL)
else if(input$selectall%%2 == 0){
updateCheckboxGroupInput(session, 'counter', 'Select counter(s)', choices = tickers)
}else{
updateCheckboxGroupInput(session, 'counter', 'Select counter(s)', choices = tickers, selected = tickers)
}
})
getCounter <- function(){
data <- na.omit(data.frame(Com=NA, Open=NA, High=NA, Low=NA, Close=NA, Volume=NA, Date=NA, Weekday=NA))
data <- llply(input$counter, function(x) {
y = data.frame(Com=x, as.data.frame(
tryCatch(suppressAll(na.omit(getSymbols(x, src = 'google', auto.assign = FALSE,
start = input$dates[1], end = input$dates[2]))),
error = function(e) data.frame(Open=NA, High=NA, Low=NA, Close=NA, Volume=NA))));
if(nrow(na.omit(y))==0) {
y = data.frame(Com=x, as.data.frame(
tryCatch(suppressAll(na.omit(getSymbols(x, src = 'yahoo', auto.assign = FALSE,
start = input$dates[1], end = input$dates[2]))),
error = function(e) data.frame(Open=NA, High=NA, Low=NA, Close=NA, Volume=NA))))
}else{
y %<>% mutate(Date=as.character(rownames(.)), Weekday=factor(weekdays(ymd(Date))));
names(y) <- c('Com', 'Open', 'High', 'Low', 'Close', 'Volume', 'Date', 'Weekday')};
y}, .parallel=TRUE) %>% rbind_all %>% tbl_df %>%
select(Date, Weekday, Com, Open, High, Low, Close, Volume) %>% mutate(Com=factor(Com)) %>% na.omit
return(data)
}
output$table1 <- renderDataTable({
data <- getCounter()
data <- datatable(data,
caption="Table 1.1.1 : Public Listed Companies Stock Price",
extensions = list("ColReorder"=NULL, "ColVis"=NULL, "TableTools"=NULL
#, "FixedColumns"=list(leftColumns=2)
),
options = list(autoWidth=TRUE,
oColReorder=list(realtime=TRUE), #oColVis=list(exclude=c(0, 1), activate='mouseover'),
oTableTools=list(
sSwfPath="//cdnjs.cloudflare.com/ajax/libs/datatables-tabletools/2.1.5/swf/copy_csv_xls.swf",
aButtons=list("copy", "print",
list(sExtends="collection", sButtonText="Save",
aButtons=c("csv","xls")))),
dom='CRTrilftp', scrollX=TRUE, scrollCollapse=TRUE,
colVis=list(exclude=c(0), activate='mouseover')))
return(dt)
})
output$gvis <- renderGvis({
data <- getCounter()
if(input$adjust) data <- adjust(data)
if(input$log) data <- mutate(data, Low=log(Low), Open=log(Open), Close=log(Close), High=log(High))
gvisCandlestickChart(data, xvar='Date', low='Low', open='Open', close='Close', high='High',
options=list(legend='none', gvis.editor="Edit me!"))
})
}
#'@ runApp(shinyApp(ui, server), display.mode='showcase')
shinyApp(ui, server)
相关问题
最新问题
- 我写了这段代码，但我无法理解我的错误
- 我无法从一个代码实例的列表中删除 None 值，但我可以在另一个实例中。为什么它适用于一个细分市场而不适用于另一个细分市场？
- 是否有可能使 loadstring 不可能等于打印？卢阿
- java中的random.expovariate()
- Appscript 通过会议在 Google 日历中发送电子邮件和创建活动
- 为什么我的 Onclick 箭头功能在 React 中不起作用？
- 在此代码中是否有使用“this”的替代方法？
- 在 SQL Server 和 PostgreSQL 上查询，我如何从第一个表获得第二个表的可视化
- 每千个数字得到
- 更新了城市边界 KML 文件的来源？