R当数据有效时返回错误
我有一个闪亮的应用程序，在没有数据的情况下会产生错误，我正在尝试使用validate生成更好的错误消息。我已经让它对没有数据的变量起作用，但是在有数据的地方，我得到了一个错误，应该出现一个图（或表） 使用下面的代码，我得到下面的错误R当数据有效时返回错误,r,validation,shiny,R,Validation,Shiny,我有一个闪亮的应用程序，在没有数据的情况下会产生错误，我正在尝试使用validate生成更好的错误消息。我已经让它对没有数据的变量起作用，但是在有数据的地方，我得到了一个错误，应该出现一个图（或表） 使用下面的代码，我得到下面的错误 else if (input$geo=="Alaska, 2015") { data <- switch( validate(need(input$var != "Sexual Orientation", "Data Unavailab
else if (input$geo=="Alaska, 2015") {
data <- switch(
validate(need(input$var != "Sexual Orientation", "Data Unavailable")),
input$var,
"Housing Status" = hmlweightak,
"Sex" = sexweightak,
"Race/Ethnicity" = raceethweightak,
"Sexual Orientation" = "",
"Bullied at School in the last 12 Months" = bsweightak,
"Missed School due to Safety Concerns" = usweightak,
"Deliberately hurt by an intimate partner" = pvweightak,
"Forced to Perform Sexual Acts by Intimate Partner in the last 12 Months" = saweightak,
"Binge Drank in the last 30 days" = bdweightak,
"First Tried Alcohol by Age 12" = faweightak,
"First Tried Marijuana by Age 12" = fmweightak,
"Suffered from Depression in the last 12 Months" = dweightak,
"Had Suicidal Thoughts in the last 12 Months" = stweightak,
"Attempted Suicide in the last 12 Months" = asweightak,
"Required Medical Attention After Suicide Attempt in the last 12 Months" = smweightak,
"Ever Used Illegal Drugs" = sdweightak,
"Used Prescription Drugs Without a Prescription" = pdweightak,
"Sexually Active by Age 13" = fiweightak,
"Drank or Used Drugs Before Last Sexual Intercourse" = ddliweightak,
"Breakfast in the Last 7 Days" = "",
"Average Hours of Sleep per Night" = hsweightak,
"Used a Condom During Last Sexual Intercourse" = clweightak,
"Asthma" = aweightak
)
}
else if（输入$geo==“阿拉斯加，2015”）{
数据问题在于开关
和验证
语句的组合
switch(input$dropDownValue,
iris = datasets::iris,
cars = datasets::cars)
假设根据您输入的$dropDownValue，您希望返回一个或另一个数据集。对于iris
return datasets:：iris
，您需要以下语句
switch(input$dropDownValue,
iris = datasets::iris,
cars = datasets::cars)
validate
如果第一条语句的evaluate为FALSE
，则仅停止函数的执行并添加验证消息
你的情况应该是这样的
validate(need(input$var != "Sexual Orientation", "Data Unavailable"))
data <- switch(input$var,
"Housing Status" = hmlweightak,
"Sex" = sexweightak,
[...]
)
这很好用，很简单！我不敢相信我没有试过，但非常感谢你！