Plot and ggplot

[Yovanov]

I have a weird error: the following plot works fine with a high range of DateTime (x) and with the last month (Ene - January). (The error didn't derive from any shiny function).

But, when I try to make a graph by mean of shiny app, with a lower range (A week Feb. 01 - Feb. 07), it doesn't show anything. There is not an error:

This is the code:

ui = fluidPage(navbarPage(
                   'TF Analytics',
                   tabPanel('Overview',
                            sidebarPanel(
                                textInput("text", label = h3("Text input"), value = "Enter text..."),
                                dateRangeInput("dates", label = h3("Date range")),
                                actionButton("action", label = "+")
                            ), mainPanel(
                                plotOutput(outputId = "plot")
                            )))
               ))

server = function(input, output) {
    
    newsData = function() {code to return a tibble}    
    
    observeEvent(input$action,{
        p = plot(as.POSIXct(newsData()$time,format="%Y/%m/%d %H:%M:%S", tz="UTC"), 
                          newsData()$difprev, type = "h")
        output$plot = renderPlot({
            p
        })
    })
}

shinyApp(ui = ui, server = server)

I used lubridate::as_datetime(), but it is the same.

What can I do?

[nirgrahamuk]

Hi!

To help us help you, could you please prepare a reproducible example (reprex) illustrating your issue? Please have a look at this guide, to see how to create one:

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

[Yovanov]

@nirgrahamuk

ave a look at this g

Hi. Thanks for the reccomendation . This is the tibble:

data = tibble::tribble(
  ~currency,                 ~time, ~difprev, ~difcst, ~n, ~init,
  "AUD", "2021/02/01 00:00:00",      0.6,       0, 1L,     0,
  "AUD", "2021/02/01 00:30:00",    0.442,       0, 2L,     0,
  "AUD", "2021/02/01 05:30:00",   -0.551,       0, 1L,     0,
  "AUD", "2021/02/01 06:30:00",     0.03,       0, 1L,     0,
  "AUD", "2021/02/02 01:30:00",        0,       0, 1L,     0,
  "AUD", "2021/02/02 03:30:00",        0,       0, 2L,     0,
  "AUD", "2021/02/02 21:30:00",   -0.042,       0, 1L,     0,
  "AUD", "2021/02/02 22:00:00",    0.025,       0, 1L,     0,
  "AUD", "2021/02/03 00:30:00",   -3.893,       0, 3L,     0,
  "AUD", "2021/02/03 01:30:00",        0,       0, 1L,     0,
  "AUD", "2021/02/04 00:30:00",    3.599,       0, 4L,     0,
  "AUD", "2021/02/04 21:30:00",   -0.026,       0, 1L,     0,
  "AUD", "2021/02/04 22:30:00",        0,       0, 1L,     0,
  "AUD", "2021/02/05 00:30:00",    0.639,  -0.583, 3L,     0,
  "AUD", "2021/02/05 20:30:00",    2.875,       0, 1L,     0,
  "CAD", "2021/02/01 06:30:00",    0.042,       0, 1L,     0,
  "CAD", "2021/02/01 14:30:00",     0.06,       0, 1L,     0,
  "CAD", "2021/02/05 13:30:00", -127.898,   0.053, 8L,     0,
  "CAD", "2021/02/05 15:00:00",    -0.07,       0, 2L,     0,
  "CAD", "2021/02/05 20:30:00",   -0.167,       0, 1L,     0
)
head(data)
plot(anytime::utctime(data$time, tz="UTC"), data$difprev, type = "h")

But in Shiny the result didn't show me anything:

[williaml]

What do input$text and input$dates do?

They don't appear in your code.

[Yovanov]

Hi! These parameters make me rescue the table that I want to plot according to the name of the table (input$text) and the range of DateTime (input$dates). The table is on my database (MySql) and the function newsData() just returns the table required. The same table that I named as "data". I think I don't have any problem with these inputs. In my first post, I wrote the code related to my shiny app.

pd: data = newsData() in my Shiny app

The error seems to be a bug because the code of the plot is perfect.