diff --git a/ggplot2/2021-08-04-radar-chart.Rmd b/ggplot2/2021-08-04-radar-chart.Rmd
index 79496517..767e076b 100644
--- a/ggplot2/2021-08-04-radar-chart.Rmd
+++ b/ggplot2/2021-08-04-radar-chart.Rmd
@@ -19,22 +19,22 @@ knitr::opts_chunk$set(message = FALSE, warning=FALSE)
 
 ## Default radar plot
 
-Radar charts are also called Spider or Web or Polar charts. 
+Radar charts are also called Spider or Web or Polar charts.
 
 Input data format is very specific. Each row must be an entity. Each column is a quantitative variable. First 2 rows provide the min and the max that will be used for each variable.
 
 Once you have this format, the radarchart() function makes all the job for you.
 
-```{r}
+```{r eval=FALSE}
 library(plotly)
 library(ggplot2)
 library(fmsb)
- 
+
 data <- as.data.frame(matrix( sample( 2:20 , 10 , replace=T) , ncol=10))
 colnames(data) <- c("math" , "english" , "biology" , "music" , "R-coding", "data-viz" , "french" , "physic", "statistic", "sport" )
- 
+
 data <- rbind(rep(20,10) , rep(0,10) , data)
- 
+
 p <- radarchart(data)
 
 ggplotly(p)
@@ -46,19 +46,19 @@ ggplotly(p)
 ## Adding style
 
 
-```{r}
+```{r eval=FALSE}
 library(plotly)
 library(fmsb)
- 
+
 data <- as.data.frame(matrix( sample( 2:20 , 10 , replace=T) , ncol=10))
 colnames(data) <- c("math" , "english" , "biology" , "music" , "R-coding", "data-viz" , "french" , "physic", "statistic", "sport" )
 
 data <- rbind(rep(20,10) , rep(0,10) , data)
 
-p <- radarchart( data  , axistype=1 , 
-    pcol=rgb(0.2,0.5,0.5,0.9) , pfcol=rgb(0.2,0.5,0.5,0.5) , plwd=4 , 
+p <- radarchart( data  , axistype=1 ,
+    pcol=rgb(0.2,0.5,0.5,0.9) , pfcol=rgb(0.2,0.5,0.5,0.5) , plwd=4 ,
     cglcol="grey", cglty=1, axislabcol="grey", caxislabels=seq(0,20,5), cglwd=0.8,
-    vlcex=0.8 
+    vlcex=0.8
     )
 
 ggplotly(p)
@@ -69,10 +69,10 @@ ggplotly(p)
 ## Plotting multiple groups
 
 
-```{r}
+```{r eval=FALSE}
 library(plotly)
 library(fmsb)
- 
+
 data <- as.data.frame(matrix( sample( 0:20 , 15 , replace=F) , ncol=5))
 colnames(data) <- c("math" , "english" , "biology" , "music" , "R-coding" )
 rownames(data) <- paste("mister" , letters[1:3] , sep="-")
@@ -85,10 +85,10 @@ ggplotly(p)
 ```
 
 Adding style:
-```{r}
+```{r eval=FALSE}
 library(plotly)
 library(fmsb)
- 
+
 data <- as.data.frame(matrix( sample( 0:20 , 15 , replace=F) , ncol=5))
 colnames(data) <- c("math" , "english" , "biology" , "music" , "R-coding" )
 rownames(data) <- paste("mister" , letters[1:3] , sep="-")
@@ -98,10 +98,10 @@ data <- rbind(rep(20,5) , rep(0,5) , data)
 colors_border=c( rgb(0.2,0.5,0.5,0.9), rgb(0.8,0.2,0.5,0.9) , rgb(0.7,0.5,0.1,0.9) )
 colors_in=c( rgb(0.2,0.5,0.5,0.4), rgb(0.8,0.2,0.5,0.4) , rgb(0.7,0.5,0.1,0.4) )
 
-p <- radarchart( data  , axistype=1 , 
+p <- radarchart( data  , axistype=1 ,
     pcol=colors_border , pfcol=colors_in , plwd=4 , plty=1,
     cglcol="grey", cglty=1, axislabcol="grey", caxislabels=seq(0,20,5), cglwd=0.8,
-    vlcex=0.8 
+    vlcex=0.8
     )
 
 legend(x=0.7, y=1, legend = rownames(data[-c(1,2),]), bty = "n", pch=20 , col=colors_in , text.col = "grey", cex=1.2, pt.cex=3)