Tag: R

• Plotting transmission losses

  Transmission loss in GWh in India. Data from Central Electricity Authority. Click on the image for hi-res version. All data available here.

  

  Transmission loss as % of net generation in GWh. Net generation = Gross generation — consumption by auxiliary power plant units

  (Model used to fit: LOESS)

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  Rise of net supply to ultimate consumers and exports v. purchase of power from non-utilities and imports before transmission. Note different y-axes: net supply, right; purchase, left; both in GWh

  

  2014.08.02

• Motion charts in R

  Formatting a motion chart in Google Visualization is as hellish as it’s surprising how simple R makes it. One more reason to learn this underrated language. To create this motion chart, I downloaded the data from here (as CSV) and keyed in the following lines in RStudio:

  [code language=”r”]

  emissions <- read.csv("–path to file–/emissions.csv", header=T)
  install.packages("googleVis")
  library("googleVis)
  emissions_Motion = gvisMotionChart(emissions, idvar="Country", timevar="Year")
  plot(emissions_Motion)
  cat(emissions_Motion$html$chart, file="emissions.html")

  [/code]

  That’s it.

  2014.07.07