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Author's profile photo Marc DANIAU

Top Bottom Analysis using R Visualizations (part 5)

In part 5, the last of our blog series, we will build a grid of top-n bar charts that allow us to compare countries that consume the most meat by the type of meat eaten and over time.

 

We start by creating a BI Model from a csv file.

The file in question is available here.

 

We save our model and name it MDL_MEAT.

We create a story and insert an R visualization.

We click “Add Input Data” and select the dimensions Country and Year.

 

From the Builder we click on “Add a script” and insert the code shown below to load the packages needed for data manipulation and data plotting.

library(dplyr)
library(tidyr)
library(ggplot2)

Note that this time we use the graphing library ggplot2.

We extract from our dataset the top 5 countries by type of meat eaten and year.

top_limit = 5
df <- MDL_MEAT %>%
   gather(Indicator, Value, -Country, -Year) %>%
   group_by(Indicator, Year) %>%
   mutate(Rank = row_number(-Value)) %>%
   ungroup %>%
   filter(Rank <= top_limit) %>% 
   arrange(Indicator, Year, Value) %>%
   mutate(Sequence = row_number())%>%               
   mutate(header_caption = paste(Indicator, Year)) %>%               
   mutate(header_caption = factor(header_caption, unique(header_caption)))

 

We leverage the facet functionality of ggplot2 to display within a single visualization one bar chart for each combination of meat types and years.

title_caption = paste("Top", top_limit, "meat eating countries by type over 2 decades")
p <- ggplot(data=df, 
            aes(y=Value, x= Sequence)) + 
      geom_bar(stat="identity", width = 0.7, fill="steelblue") + 
	  scale_x_continuous(breaks = df$Sequence, labels = df$Country) +
	  scale_y_continuous(limits=c(0,70)) +
	  coord_flip() + 
      facet_wrap(~header_caption, ncol =3, scales="free") +
	  labs(title = title_caption, y = "Meat Consumption (Kilograms/capita)")
	  
p + theme_bw() +  
    theme(
	panel.border = element_blank()  ,
    plot.title = element_text(color="black", size=16, face="bold", hjust=0.5 ,
	                          margin = margin(t = 0, r = 0, b = 20, l = 0)) ,
	axis.title.x = element_text(size = 12, 
	                            margin = margin(t = 10, r = 0, b = 0, l = 0)) ,
	axis.text.x = element_text(size = 10, face = "bold" , color = "grey",
	                           margin = margin(t = 6, r = 0, b = 0, l = 0)) ,
	axis.ticks.x = element_line(color = "grey") , 
	axis.title.y = element_blank() , 
	axis.text.y = element_text(size = 11, face = "bold", 
	                           margin = margin(t = 0, r = 0, b = 0, l = 0)) ,
	axis.ticks.y = element_blank() ,
	legend.position = "bottom" ,
	legend.text = element_text(size = 14) ,
	strip.background = element_blank() ,
	strip.text = element_text(size = 13, face = "bold") 
   )

 

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      6 Comments
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      Author's profile photo Juned Shaikh
      Juned Shaikh

      Hello @Marc DANIAU,

      I am using App design and want to link and utilize the data of two different models in single widget using linked / shared dimensions.

       

      Can you suggest me a solution for this as well.

      It will be a great help for me.

      Author's profile photo Marc DANIAU
      Marc DANIAU
      Blog Post Author

      I am not familiar with App Design. You may want to look at this series showing examples of App Design and R Visualization.

      https://visualbi.com/blogs/sap/sap-analytics-cloud/r-visualizations-in-sap-analytics-cloud-series-1-dynamic-filtering/

       

       

      Author's profile photo Juned Shaikh
      Juned Shaikh

      Thanks Marc for the help.

      Author's profile photo Tuan Hoang Minh
      Tuan Hoang Minh

      Hi Marc,

      that were a great series and thank you for that.

      I would like to ask how we can save/download the current view of a chart as an image with R Visual?

      I have tried many times with Plotly integrated screenshot function but it doesn't work with SAC may be. As you can see there was only tooltips with "newplot.png" downloaded, but it doesn't.

      Do you have any suggestion for that?

      Thank you and have a nice day

       

      Author's profile photo Marc DANIAU
      Marc DANIAU
      Blog Post Author

      Hi,

      Same thing on my side, the button "Download plot as png" from the plotly menu bar does not trigger the download. I have no suggestion, apart from doing a print screen and paste then save as png in paint for example.

      Maybe you could you ask directly to the community: https://community.sap.com/topics/cloud-analytics

      or else to the support.

       

      Author's profile photo Tuan Hoang Minh
      Tuan Hoang Minh

      Hi Marc,

      thank you very much for your answer. I have posted the question on the link you provided.

      Best Regards,