modifiedmk v1.4.0

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Modified Versions of Mann Kendall and Spearman's Rho Trend Tests

Power of non-parametric Mann-Kendall test and Spearman<e2><80><99>s Rho test is highly influenced by serially correlated data. To address this issue, trend tests may be applied on the modified versions of the time series data by Block Bootstrapping (BBS), Prewhitening (PW) , Trend Free Prewhitening (TFPW), Bias Corrected Prewhitening and Variance Correction Approach by calculating effective sample size. Mann, H. B. (1945).<doi:10.1017/CBO9781107415324.004>. Kendall, M. (1975). Multivariate analysis. Charles Griffin&Company Ltd,. sen, P. K. (1968).<doi:10.2307/2285891>. <c3><96>n<c3><b6>z, B., & Bayazit, M. (2012) <doi:10.1002/hyp.8438>. Hamed, K. H. (2009).<doi:10.1016/j.jhydrol.2009.01.040>. Yue, S., & Wang, C. Y. (2002) <doi:10.1029/2001WR000861>. Yue, S., Pilon, P., Phinney, B., & Cavadias, G. (2002) <doi:10.1002/hyp.1095>. Hamed, K. H., & Ramachandra Rao, A. (1998) <doi:10.1016/S0022-1694(97)00125-X>. Yue, S., & Wang, C. Y. (2004) <doi:10.1023/B:WARM.0000043140.61082.60>.

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modifiedmk

The package is useful in implementing Non-parametric Mann-Kendall trend tests and Spearman's Rank Correlation Coefficient tests.

The package contains the following varians of Trend-Tests

  • Mann-Kendall trend test (MK)

  • Mann-Kendall trend test for Pre-Whitened series (PW-MK)

  • Mann-Kendall trend test for Bias-Corrected Pre-Whitened series (BCPW-MK)

  • Mann-Kendall trend test for Trend-Free Pre-Whitened series (TFPW-MK)

  • Block Bootstrapping with Mann-Kendall test (BBSMK)

  • Modified Mann-Kendall trend using Variance Correction Approach by Hamed and Rao (1998)

  • Modified Mann-Kendall trend using Variance Correction Approach by Hamed and Rao (1998) considering significant lags upto lag-3

  • Modified Mann-Kendall trend using Variance Correction Approach suggested by Yue and Wang (2004)

  • Modified Mann-Kendall trend using Variance Correction Approach suggested by Yue and Wang (2004) considering only lag-1 auto correlation coefficient

  • Spearman's Rank Correlation test

  • Block Bootstrapping with Spearman's Rank Correlation test (BBSSR)

  • Trend magnitude is calculated by Sen's slope method

Build Status

CRAN_Status_Badge

Rdoc

Functions in modifiedmk

Name Description
spear Spearman's Rank Correlation Test
tfpwmk Mann-Kendall Trend Test Applied to Trend-Free Prewhitened Time Series Data in Presence of Serial Correlation Using Yue et al. (2002) Approach
pwmk Mann-Kendall Test of Prewhitened Time Series Data in Presence of Serial Correlation Using the von Storch (1995) Approach
bbsmk Nonparametric Block Bootstrapped Mann-Kendall Trend Test
mkttest Mann-Kendall Trend Test of Time Series Data Without Modifications
mmky1lag Modified Mann-Kendall Test For Serially Correlated Data Using the Yue and Wang (2004) Variance Correction Approach Using the Lag-1 Correlation Coefficient Only
bbssr Nonparametric Block Bootstrapped Spearman's Rank Correlation Trend Test
pbmk Bootstrapped Mann-Kendall Trend Test with Optional Bias Corrected Prewhitening
bcpw Hamed (2009) Bias Corrected Prewhitening.
mmky Modified Mann-Kendall Test For Serially Correlated Data Using the Yue and Wang (2004) Variance Correction Approach
mmkh Modified Mann-Kendall Test For Serially Correlated Data Using the Hamed and Rao (1998) Variance Correction Approach
mmkh3lag Modified Mann-Kendall Test For Serially Correlated Data Using the Hamed and Rao (1998) Variance Correction Approach Considering Only the First Three Lags
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Vignettes of modifiedmk

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Details

License AGPL-3
Encoding UTF-8
LazyData true
VignetteBuilder knitr
RoxygenNote 6.1.1
NeedsCompilation no
Packaged 2019-06-14 17:09:36 UTC; Deepu
Repository CRAN
Date/Publication 2019-06-14 17:30:09 UTC

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