Wavelet Analysis in R/RStudio | Biwavelet Coherence Analysis in R/RStudio

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  • เผยแพร่เมื่อ 7 พ.ย. 2024

ความคิดเห็น • 72

  • @arash4232
    @arash4232 ปีที่แล้ว +1

    that was great but what does the graph say? how we should read the graph, the colours and arrows, please?

  • @GafarAgunbiade-e4w
    @GafarAgunbiade-e4w 5 วันที่ผ่านมา

    What do you think is wrong ? my date is always converted to Epoch Format instead of the UTC Posic when i run the wtc function

  • @uzairali-cq6qr
    @uzairali-cq6qr 4 หลายเดือนก่อน

    Good explaination

  • @CoolBoy-rq5qj
    @CoolBoy-rq5qj ปีที่แล้ว

    Thanks for the video.... i have this issue, how to fix it
    Error in axis(side = 3, at = c(seq(0, n, 19)), labels = c(seq(1900, 2023, :
    'at' and 'labels' lengths differ, 7 != 124
    Thanks

  • @datasavvy365
    @datasavvy365 3 ปีที่แล้ว +1

    Informative video!

  • @FluffyTashiLai
    @FluffyTashiLai 3 ปีที่แล้ว +2

    If I am dealing with a daily data but I want to look into monthly labels. How do I adjust that? I keep on getting this > axis(side = 1, at = c(seq(0, n, 260)), labels = c(seq(2020-02-07
    + , 2020-05-28, 0.3)))
    Error in seq.default(2020 - 2 - 7, 2020 - 5 - 28, 0.3) :
    wrong sign in 'by' argument. Do you know what this means? Thank you!

    • @expertyourself4333
      @expertyourself4333  3 ปีที่แล้ว +1

      Converting the daily data into monthly data would be a good option. The error might result as the system has used daily data structures and cant modify or convert them into monthly. I suggest you rather convert daily data into monthly and then run the analysis.

    • @FluffyTashiLai
      @FluffyTashiLai 3 ปีที่แล้ว +1

      @@expertyourself4333 Thank you so much! ❤

    • @shoaibali3992
      @shoaibali3992 2 ปีที่แล้ว +1

      you need to modify at=c(seq(0,n,30)), 30 is for your moth label. remember that this will only label month date.

  • @rwaewae
    @rwaewae 2 ปีที่แล้ว +1

    Sir, only few arrows come in the graph, what is this problem.

  • @uzairali-cq6qr
    @uzairali-cq6qr 4 หลายเดือนก่อน

    Yalaka Nowshera wala da code issue ke yara. sanga ba ye solve ko

  • @КонстантинСуковатов
    @КонстантинСуковатов 2 ปีที่แล้ว

    googd video, thanks for sharing

  • @uzairali-cq6qr
    @uzairali-cq6qr 4 หลายเดือนก่อน

    while doing analysis this issue is accured (Error in data$CEI : object of type 'closure' is not subsettable). how to slove it?

  • @FluffyTashiLai
    @FluffyTashiLai 3 ปีที่แล้ว +1

    is it possible to make a video on (WaveletComp)??

    • @expertyourself4333
      @expertyourself4333  3 ปีที่แล้ว +1

      Already thinking of it. This month some new and fresh stuff would be added soon.

  • @omarbanikhalaf8959
    @omarbanikhalaf8959 2 ปีที่แล้ว +1

    thank you so much, it's very helpful. but why you used this command (par( oma = c(0,0,0,1), mar = (5,4,5,5) + 0.1) ) ?

    • @expertyourself4333
      @expertyourself4333  2 ปีที่แล้ว

      These commands are used for defining the inner and outer margins for plotting the revelent results.

    • @ibrahimatoure2239
      @ibrahimatoure2239 2 ปีที่แล้ว

      @@expertyourself4333 hi how to choice these commandes?

  • @chenwen6354
    @chenwen6354 9 หลายเดือนก่อน

    Thank you so much!

  • @RICHARDAGYEMAN-OPAMBOUR
    @RICHARDAGYEMAN-OPAMBOUR ปีที่แล้ว

    Hello, Please anyone to recommend a video on Rolling window wavelet coherence?

  • @josephbyamugisha2464
    @josephbyamugisha2464 ปีที่แล้ว

    How do I resolve the following error:
    Error in curve(expr = x, from = from, to = to, xlim = xlim, ylab = ylab, :
    'expr' did not evaluate to an object of length 'n'

  • @johneagle4384
    @johneagle4384 2 ปีที่แล้ว

    Thank you!!!

  • @alexwilson1424
    @alexwilson1424 2 ปีที่แล้ว

    Hey,i have a question,How to plot phase difference by this package, i found it come out the phase difference, but i can't draw the plot

  • @ifrankhan3942
    @ifrankhan3942 2 ปีที่แล้ว +1

    Bro. Would you please share the code for Wavelet Spectrum and Cross Wavelet please? I will be very thankful to you.
    Regards

  • @shafqatali4482
    @shafqatali4482 2 ปีที่แล้ว

    @ExpertYourself, hi , can we make this graphs between 5 to 6 variables in a single graph.

    • @expertyourself4333
      @expertyourself4333  2 ปีที่แล้ว +1

      BiWavelet means only two time series. For more than two variables there are Multvariate Analysis. For which i am prepraring video but due to some unavoidable reasons not been able to do so. In near future I would come up everything related to Wavelets.

    • @shafqatali4482
      @shafqatali4482 2 ปีที่แล้ว +1

      @@expertyourself4333 I will wait definitely for this. Good work brother keep it up 👍

    • @shafqatali4482
      @shafqatali4482 2 ปีที่แล้ว

      @@expertyourself4333 Sir can we talk on whatsapp?

  • @econometricandstatisticala8020
    @econometricandstatisticala8020 2 ปีที่แล้ว +1

    I am trying to run these commands on annual time series data, but this gives an error, I am using the latest version of R

  • @jamescooke8276
    @jamescooke8276 2 ปีที่แล้ว +1

    Hi,
    I am receiving error when i try and run the plot function:
    Error in image.default(x$t, yvals, t(zvals), zlim = zlim, xlim = xlim, :
    invalid z limits
    In addition: Warning messages:
    1: In min(x) : no non-missing arguments to min; returning Inf
    2: In max(x) : no non-missing arguments to max; returning -Inf

    • @expertyourself4333
      @expertyourself4333  2 ปีที่แล้ว

      Check for NAs i.e. missing values in your data. First prepare your data as directed in the video and then perform the wavelet analysis.

  • @shwetasingh2389
    @shwetasingh2389 3 ปีที่แล้ว

    Sir do you know how to apply fourier Toda yamamoto causality test

  • @azzeddinereghais8943
    @azzeddinereghais8943 3 ปีที่แล้ว +1

    Please allow me again to ask a question
    What do we do when we want to do work with only one variable(t1)?

    • @expertyourself4333
      @expertyourself4333  3 ปีที่แล้ว +1

      I will soon get back to you. Please wait till Sunday because im too much stuck in my studies. I can undertand your problem but trust you would get your results. No worry

    • @azzeddinereghais8943
      @azzeddinereghais8943 3 ปีที่แล้ว

      ​@@expertyourself4333 God reward you
      I wish you good luck brother

    • @expertyourself4333
      @expertyourself4333  3 ปีที่แล้ว +1

      Please try these codes for Continous Wavelet Transform of one Variable i.e X
      wcX

    • @azzeddinereghais8943
      @azzeddinereghais8943 3 ปีที่แล้ว

      @@expertyourself4333 A lot thanks brother, Baraka allaho fik

  • @doldrum3943
    @doldrum3943 2 ปีที่แล้ว

    Thanks so much sir, Assalamualaikum. I have a data that consist two time series and the data only one month in march. My question is, how to plot the "at =c(seq(0, n, 260))".. only one month data.. Thanks sir

    • @doldrum3943
      @doldrum3943 2 ปีที่แล้ว

      From your explanation that 0 to 260 is day in one year??.. is that right, sorry about this

    • @expertyourself4333
      @expertyourself4333  2 ปีที่แล้ว

      @@doldrum3943 Yes and reflects the frequency of the time series.

  • @jamescooke8276
    @jamescooke8276 2 ปีที่แล้ว

    hi , how do a rescale the x axis? my timeseries begins at 01/03/2020, but i believe the x axis label starts at 01/01/2020

    • @expertyourself4333
      @expertyourself4333  2 ปีที่แล้ว

      For this you should play around with the last code in this video "at label"

  • @subodhdahal8147
    @subodhdahal8147 2 ปีที่แล้ว

    How to get coi?? No coi even after write plot.coi

  • @thedtox4331
    @thedtox4331 2 ปีที่แล้ว +1

    Salam, kindly guide how to read and interpret Arrows movement please, thanks !

    • @expertyourself4333
      @expertyourself4333  2 ปีที่แล้ว +1

      Wasalam. Soon a video will be uploaded for interpretation of Wavelet Plots.

    • @thedtox4331
      @thedtox4331 2 ปีที่แล้ว

      @@expertyourself4333 Thanks sir waiting

    • @expertyourself4333
      @expertyourself4333  2 ปีที่แล้ว +1

      @@thedtox4331 Sorry for the late reply. The right arrow means in-phase relationship and if the arrow is right-upward that means the first variable is leading the 2nd variable is lagging whereas the right-downward arrow means the 2nd variable is leading and the 1st variable is lagging. The left arrow indicates anti/ out-phase relationship. I hope you get your answer.
      Thank you

    • @thedtox4331
      @thedtox4331 2 ปีที่แล้ว

      @@expertyourself4333 Sir, many thanks !

  • @shwetasingh2389
    @shwetasingh2389 3 ปีที่แล้ว +1

    wtcgdp=wtc(t2,t1,nrands = nrands)
    Error in arima(d1[, 2], order = c(1, 0, 0)) :
    non-stationary AR part from CSS
    Sir Please help this error is coming. How can we fix it?

  • @rwaewae
    @rwaewae 2 ปีที่แล้ว

    AOA, I have yearly data from 1970 to 2016. when i run this command
    "axis(side=1, at=c(seq(0,n,12)), labels=c(seq(1970,2016,1)))"
    i recieve error msg.
    "Error in axis(side = 1, at = c(seq(0, n, 12)), labels = c(seq(1970, 2016, :
    'at' and 'labels' lengths differ, 4 != 47"

    • @expertyourself4333
      @expertyourself4333  2 ปีที่แล้ว

      Email your data on
      nasir.nshr@gmail.com

    • @rwaewae
      @rwaewae 2 ปีที่แล้ว

      @@expertyourself4333 i have already emailed. can i contact u on whatsapp. thanx

    • @tebohomosikari4067
      @tebohomosikari4067 2 ปีที่แล้ว

      @@expertyourself4333 Afternoon Sir. Thank you for your video. I am having a problem also here: see below the error i found. I am using an annual data from 1984 to 2021.
      axis(side = 2, at = c(seq(1, n, 12)), labels = c(seq(1984, 2021, 1)))
      Error in axis(side = 2, at = c(seq(1, n, 12)), labels = c(seq(1984, 2021, :
      'at' and 'labels' lengths differ, 4 != 38
      kindly help me.

  • @lprayaga1
    @lprayaga1 ปีที่แล้ว

    can you please share the data file?

  • @azzeddinereghais8943
    @azzeddinereghais8943 3 ปีที่แล้ว

    I'm looking for how it works
    Continuous wavelets transform (CWT) in R/Rstudio
    Please guide me where to find the icons or videos
    Thanks

    • @expertyourself4333
      @expertyourself4333  3 ปีที่แล้ว +1

      you should use the same library and use
      'cwt' as code. Any ways in some time I would prepare video on it.

    • @azzeddinereghais8943
      @azzeddinereghais8943 3 ปีที่แล้ว +1

      @@expertyourself4333 Thank you, I hope it will be soon and let me know
      Hearty greetings to you

    • @azzeddinereghais8943
      @azzeddinereghais8943 3 ปีที่แล้ว

      @@expertyourself4333 If possible, please share with me a code "cwt"
      I'm a little in a hurry
      Greetings again to you

  • @ibrahimatoure5814
    @ibrahimatoure5814 2 ปีที่แล้ว

    Hello, here are the sentences displayed when I compile.
    -Error in polygon(x = c(x$t, rev(x$t)), lty = lty.coi, lwd = lwd.coi, y = c(log2(x$coi), :
    invalid line type: must be length 2, 4, 6 or 8
    -Error in axis(side = 1, at = c(seq(0, n, 12)), labels = c(seq(1960, 1995, :
    'at' and 'labels' lengths differ, 37 != 36

  • @shwetasingh2389
    @shwetasingh2389 3 ปีที่แล้ว +1

    Sir please help me very urgent

  • @amirasaid9786
    @amirasaid9786 3 ปีที่แล้ว +1

    bonjour votre email s'il vous plait

    • @expertyourself4333
      @expertyourself4333  3 ปีที่แล้ว +1

      I hope you are asking for an email. Please write in a global language like English, because google translator could be misleading sometimes. Thanks

    • @aichaben1730
      @aichaben1730 3 ปีที่แล้ว

      @@expertyourself4333 yes Sir, please can you give me your email if it is possible ?

    • @expertyourself4333
      @expertyourself4333  3 ปีที่แล้ว

      @@aichaben1730 You can comment your problem here. If possible for me I would try to help you through the comment and otherwise send my details.