Filter two tables with crosstalk

Question

I am creating a Flexdashboard in R. I want the dashboard to contains both a table and a series of visualizations, that would be filtered through inputs.

As I need to de

Answer 1

Recently, I've also wanted to use one filter to filter 2 visualizations.

Brief description of my situation
I've wanted to use one filter to filter a boxplot and a table.
Source data has been a data frame. I've wanted to use some of variables for the boxplot and also calculate some statistics (like mean, standard deviation, mode, number of records).
Functions I've needed to use to display results: plotly::plot_ly(), DT::datatable(), crosstalk::bscols().

I've found out that there are 3 key information to solve this situation
Key 1) It's necessary to correctly create shared data.
In my case, I've had to use crosstalk::SharedData$new() twice.
Correct shared data, to be used as source for visualizations, can be used if firstly keys 2 and 3 are fulfilled.
Key 2) When creating shared data, use the same group argument as "Lodewic Van Twillert" explained on 16 Mar 2018.
Key 3) Ensure that all SharedData instances refer conceptually to the same data points, and share the same keys.
Start with ensuring that a data frame has row names even if row names are character vector with numbers (like "1", "2", ...).
Used literature for this key 3: https://rstudio.github.io/crosstalk/using.html. (I suggest to mainly read subtitle "Grouping".)

Summary of steps I've used to fulfill key information from above
Key 3) This one could be tricky in order to fulfill relevant conditions of key 3 above.
The approach I've chosen creates one table containing all data and this table (data frame) will be used to create both shared data.
I've applied data manipulations to original data frame (risk_scores_df) so now this data has a new column.
I've created a new data frame with statistics.
I've joined both data frames using risk_scores_df <- dplyr::left_join... so now the original data frame contains all prepared data.
I've run print(rownames(risk_scores_df)) to ensure that my updated data frame has row names.
Now, I've had one data frame containing all data (needed for both visualizations) that fulfill conditions of information of key 3 above.
Key 2) I've simply added group = "sd1" in both crosstalk::SharedData$new()
Key 1) This one could be also tricky if a wrong approach is chosen.
Here, the key to create correct shared data instances is to use that one table with all data and choose only rows and columns needed for a relevant shared data.
Example - in my case, I've run codes in Option 1 to create two shared data instances, but also Option 2 is possible.

Option 1 (choosing of only needed rows and columns is in crosstalk::SharedData$new())

  rs_df_sd1 <- crosstalk::SharedData$new(
    risk_scores_df[, c(1, 2, 5)],
    group = "sd1"
  )
  rs_df_sd1a <- crosstalk::SharedData$new(
    risk_scores_df[risk_scores_df$NumRecords > 0 &
                   is.na(risk_scores_df$NumRecords) == F,
                   c(1, 6:11)],
    group = "sd1"
  )

Option 2 (choosing of only needed rows and columns is in additional variables)

  sd1 <- risk_scores_df[, c(1, 2, 5)]
  sd1a <- risk_scores_df[risk_scores_df$NumRecords > 0 &
                         is.na(risk_scores_df$NumRecords) == F,
                         c(1, 6:11)]

  rs_df_sd1 <- crosstalk::SharedData$new(sd1, group = "sd1")
  rs_df_sd1a <- crosstalk::SharedData$new(sd1a, group = "sd1")

Completing the solution
At this point I've created shared data instances rs_df_sd1 and rs_df_sd1a that can be used as main sources for visualizations that will be filtered using crosstalk::bscols().
Brief example:

  box_n_jitter_chart1 <- plotly::plot_ly(rs_df_sd1) %>% add_trace(...
  DT_table1 <- DT::datatable(rs_df_sd1a)
  crosstalk::bscols(
    widths = c(6, 12, NA),
    crosstalk::filter_select(
      id = "idAvgRisk",
      label = "Account",
      sharedData = rs_df_sd1,
      group = ~Account,
      multiple = F
    ),
    box_n_jitter_chart1,
    DT_table1
  )

Note: DT::datatable() can also use rs_df_sd1a$data() and cells = list(values = base::rbind(... (see that cells = ... is used; see more about using cells e.g. at https://plotly.com/r/reference/table/) but because method data() is used (see more e.g. at https://rdrr.io/cran/crosstalk/man/SharedData.html#method-data) then it will not work with crosstalk::bscols.