[R] MODISTools help - with reproducible examples

Jeff Newmiller jdnewmil at dcn.davis.ca.us
Fri Jun 23 16:37:07 CEST 2017

Please read up [1][2][3] on what constitutes reproducibility.  A sample of data that triggers the problem is essential. 

[1] http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example

[2] http://adv-r.had.co.nz/Reproducibility.html

[3] https://cran.r-project.org/web/packages/reprex/index.html
Sent from my phone. Please excuse my brevity.

On June 23, 2017 6:54:48 AM PDT, Caroline <gliddeca at science.oregonstate.edu> wrote:
>I have and they have not yet replied - however that was only two or
>three days ago. 
>I have included a code example. 
>> On Jun 22, 2017, at 8:25 PM, David Winsemius <dwinsemius at comcast.net>
>>> On Jun 22, 2017, at 4:44 PM, Caroline
><gliddeca at science.oregonstate.edu> wrote:
>>> I am using the R-package MODISTools (different than MODIS) and am
>having a lot of difficulty troubleshooting my code. I have spent awhile
>going through MODISTools tutorials, searching for my error code,
>looking at the source code. However, I have not been able to find any
>relevant information related to my error message. 
>>> The study I am currently working on involves a herd of 200 African
>buffalo caught every six months for 4 years. I am trying to use EVI and
>NDVI to assess seasonal variation thus I would like mean EVI and NDVI
>for each observation (each time each buffalo was captured). I have
>capture date, lat and long for each observation. 
>>> However, when using ‘250m_16_days_pixel_reliability’ as my quality
>control band I keep getting the warning message:
>>> Warning in MODISSummaries(LoadDat = period, FileSep = ",", Product =
>"MOD13Q1",  :
>>> Only single data point that passed the quality screen: cannot
>>> When using ‘250m_16_days_VI_Quality’ as my quality control band I
>keep getting the warning message: 
>>> Error in QualityCheck(Data = band.time.series, QualityScores =
>QA.time.series,  : 
>>> QualityScores not all in range of MOD13Q1's QC: 0-3
>>> I seem to get this message with all subsets of my data (I have tried
>running all of my data at once and then just one data point at a time).
>I have also tried using wider date ranges as well as wider size ranges
>(in case the pixel reliability is poor within a certain area or time
>frame) but still get the same messages. 
>>> I have attached the data file I have been using as well as my code
>(subsetted to just one animal so the run time is faster) 
>>> Has anyone seen this error message before/have any suggestions for
>why I may be getting these errors?
>> I don't and you have not provided the accepted means to investigate
>which would be code and data . Have you contacted the package
>> -- 
>> David Winsemius
>> Alameda, CA, USA
>	[[alternative HTML version deleted]]
>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>PLEASE do read the posting guide
>and provide commented, minimal, self-contained, reproducible code.

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