Dataset Viewer App Presentation

Emma Schelhase

2. Project Overview

This presentation pitches a simple Shiny web application that allows users to explore built-in R datasets interactively. The application is hosted on Shinyapps.io and the source code is available here: “https://emmas800.shinyapps.io/first_shiny_proj/”.

Key Features

  • Select from built-in R datasets (iris, mtcars, airquality , PlantGrowth, ToothGrowth).

  • View an interactive data table with an option to see only the first few rows.

3. The UI & Server-Side Logic

The UI uses standard Shiny widgets for easy interaction.

  • A selectInput dropdown menu is used for choosing the dataset.

  • A checkboxInput is used to filter between the full dataset and just the head() of the data.

  • The application uses a reactive() expression to dynamically select the correct dataset based on the user’s choice.

  • renderPrint for the summary and renderDT for the interactive table are also used.

4. Embedded R Code Example

As required, here is an example of the R code running within this presentation, showing the summary of the iris dataset:

head(summary(iris))
  Sepal.Length    Sepal.Width     Petal.Length    Petal.Width   
 Min.   :4.300   Min.   :2.000   Min.   :1.000   Min.   :0.100  
 1st Qu.:5.100   1st Qu.:2.800   1st Qu.:1.600   1st Qu.:0.300  
 Median :5.800   Median :3.000   Median :4.350   Median :1.300  
 Mean   :5.843   Mean   :3.057   Mean   :3.758   Mean   :1.199  
 3rd Qu.:6.400   3rd Qu.:3.300   3rd Qu.:5.100   3rd Qu.:1.800  
 Max.   :7.900   Max.   :4.400   Max.   :6.900   Max.   :2.500  
       Species  
 setosa    :50  
 versicolor:50  
 virginica :50

5. Future Enhancements & Conclusion

Potential Future Work:

  • Adding interactive plots (e.g., histograms of selected columns).

  • Allowing users to upload their own data files.

  • Implementing more advanced statistical analysis options.

The end, thank you!