## ----echo=FALSE, fig.align='center', out.width = '70%'------------------------
knitr::include_graphics("inter_output2-1.png")

## ----echo=FALSE, fig.align='center', out.width = '70%'------------------------
knitr::include_graphics("inter_output3-1.png")

## ----echo=FALSE, fig.align='center', out.width = '70%'------------------------
knitr::include_graphics("inter_pyramid-1.png")

## ----echo=FALSE, fig.align='center', out.width = '70%'------------------------
knitr::include_graphics("inter_output-1.png")