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Error in if (spvaltext2 == 0) { : missing value where TRUE/FALSE needed #23

@LefterisZ

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@LefterisZ

Hi,

I have been trying to make BatchQC work for the past two days to no avail. I keep getting the below error:

  Quitting from lines 256-274 (batchqc_report.Rmd) 
  Error in if (spvaltext2 == 0) { : missing value where TRUE/FALSE needed

Having a closer look the problem seemed to appear in lines 263-264:

pval <- batchQC_shapeVariation(lcounts_adj, batch, plot = TRUE, groupCol = 
     rainbow(nlevels(bf))[bf])

Inside the batchQC_shapeVariation function, I tried to narrow down the problem to see where it occurs. My findings were that in line 34 (batch_ps <- batchEffectPvalue(gnormdata, sortgroups, robust=robustGene)) the function batchEffectPvalue returns the below:

 batch_ps      Named num [1:4] 0 0 NaN NaN

These two NaNs are producing the problem since the NaN in the if (spvaltext2 == 0) { cannot give TRUE or FALSE.

Inside the function batchEffectPvalue everything seems to run smoothly until we reach the

  skewbatch <- unlist(lapply(1:length(batch2), function(x) apply(data[,batch2[[x]]], 1, skewness)))
  kurtbatch <- unlist(lapply(1:length(batch2), function(x) apply(data[,batch2[[x]]], 1, kurtosis)))

By having a look at the skewbatch and kurtbatch objects I saw that there are some NaNs present. I believe that this is causing the problem downstream.

Now, I don't know whether this is a problem of skewness and kurtosis functions or is a problem with my data. I tried both raw counts and quantile normalized read counts (as suggested by you). I also filtered the quantile normalized counts for low standard deviation and made sure that none of my batches contain genes with only zeroes (as suggested in your website). I don't know what else I can do. I even thought of adding a 0 in the report_option_binary option to skip the creation of this graph but I am not sure about that since I might be leaving out an important part of the batchQC analysis.

Can you please help me?

Best regards,
Lefteris

PhD candidate, Newcastle University, UK

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