From the course: Building Data Apps with R and Shiny: Essential Training

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Printing to the R console in Shiny apps

Printing to the R console in Shiny apps

From the course: Building Data Apps with R and Shiny: Essential Training

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Printing to the R console in Shiny apps

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- [Instructor] Let's take a look at how we can use the print function to debug our shiny apps and make them work. To do that, let's go to the exercise folder. We'll go to 0802, and we'll open up our R studio project. Okay, let's open the ui.r file and the server.r file. So in the server.r file, we can see we're using the function render plot, so we're going to be seeing a chart in our shiny app, and we're using the function curve on line six. Let me show you how that function works in the console. So we'll type curve, x to the power of two, from minus five to five. And let's run that code. And what we get back is a plot of the function x squared. Okay, so let's go over to the ui.r file to see what control we're using to change the value of the exponent input. So in line two through four, we can see we're using select input, so we're going to have a pull-down menu. Okay, that's great. Now let's run our shiny app and see it in action. So, as I expected, there's an error. We're not…

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