Calculate and plot SPI in r using ggplot2
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Published 2023-11-01
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The WMO has adopted the standardized precipitation index (SPI) to be used by meteorological and hydrological services worldwide to characterize droughts. The SPI is based solely on precipitation data, not considering other variables (such as temperature, relative humidity, evapotranspiration, etc.). It is being used in research or operational mode in more than 70 countries (WMO).
In this course, I will show you how to calculate and create an SPI plot in R using the ggplot2 package. You can use the script below, and, watch the video to understand the steps involved in creating the SPI plot.
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All Comments (4)
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Hello Sir. This is quite helpful, I have been trying to use the SPEI 1.8.1 version to derive this plot, and the codes I got from Chatgpt and Stark overflow won't just work. Thank you very much
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Very good!!
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Please, could you make a tutorial on how to calculate two hydrologic drought indices namely,, Standardized Streamflow Index (SSI) in R. Or the Lake Level Change Index (LLCI) in R. The SSI uses Streamflow data from a gaging station, while the LL CI uses the Lake water level data. I have searched online and I can't find any tutorial on this two aspect s of hydrologic drought. It will go a long way if you could make a video on this. Thank you for your contents
