I have a featureCounts results file that looks like the snippet at bottom. I have another file for the parent that looks similar. How do I load these into DESeq2?(I don't know R well at all). I found something that purports to solve this problem: https://digibio.blogspot.com/2017/11/rna-seq-analysis-hisat2-featurecounts.html, but I can't tell what it's trying to do and it chokes on:

    >colnames(counts)[6:11]=str_split_fixed(colnames(counts)[6:11],"\\.",6)[,5]
    Error in names(x) <- value : 
      'names' attribute [11] must be the same length as the vector [7]

The code from the above referenced link looks like:

> library(DESeq2)
> setwd("~/example_data/practice_rnaseq_data/featurecounts/")
> counts=read.csv("counts2.txt", sep="", head=T, skip=1, row.names = "Geneid")
> colnames(counts)[6:11]
> colnames(counts)[6:11]=str_split_fixed(colnames(counts)[6:11],"\\.",6)[,5]
> colnames(counts)[6:11]
>  samples=cbind(colnames(counts)[6:11],str_split_fixed(colnames(counts)[6:11],"_",3)[,2])
> rownames(samples)=samples[,1]
> samples=as.data.frame(samples[,-1])
> colnames(samples)="condition"
> all(rownames(samples) %in% colnames(counts))
> dds=DESeqDataSetFromMatrix(countData = counts[,6:11],colData = samples,design = ~ condition)

Thanks for your help, Craig

#Program:featureCounts v1.6.4; Command:"featureCounts" "-t" "gene" "--extraAttributes" "gene_name" "-a" "/scratch/chunter/Merged/bonobo_chimp.gtf" "-o" "/public/home/chunter/Chonobo/alignments/Dennis/Merged/FullGenome/bonobochimp.fc" "/public/home/chunter/Chonobo/alignments/Dennis/Merged/FullGenome/bonobochimp_aln.sam" 
    Geneid  Chr     Start   End     Strand  Length  gene_name       /public/home/chunter/Chonobo/alignments/Dennis/Merged/FullGenome/bonobochimp_aln.sam
    ENSPPAG00000015487      B_2B    114156142       114156248       +       107     RF00026 0
    ENSPPAG00000006288      B_2B    114192967       114231750       -       38784   SLC35F5 7
    ENSPPAG00000016250      B_2B    114196346       114196424       -       79      MIR4782 0
    ENSPPAG00000040697      B_2B    114373392       114445729       +       72338   ACTR3   29
    ENSPPAG00000002669      B_2B    114479033       114479117       -       85      NA      0
    ENSPPAG00000018872      B_2B    114495289       114495504       -       216     RF00012 0
    ENSPPAG00000014590      B_2B    114895226       114895399       +       174     RF00004 0
    ENSPPAG00000025416      B_2B    114920488       116362960       +       1442473 DPP10   0
    ENSPPAG00000044705      B_2B    117049987       117054218       -       4232    NA      0
    ENSPPAG00000019034      B_2B    117687182       117687242       -       61      RF00066 0
    ENSPPAG00000033473      B_2B    118358168       118375910       +       17743   DDX18   11
    ENSPPAG00000028222      B_2B    118403125       118447025       +       43901   NA      0
    ENSPPAG00000039658      B_2B    118458782       118557824       -       99043   CCDC93  10
    ENSPPAG00000002117      B_2B    118560035       118560319       +       285     RF00017 0
    ENSPPAG00000033913      B_2B    118632402       118652647       +       20246   INSIG2  8
    ENSPPAG00000033812      B_2B    118864453       118867104       -       2652    NA      5028
    ENSPPAG00000044544      B_2B    119392495       119396304       -       3810    NA      0
    ENSPPAG00000038285      B_2B    119475677       119520385       +       44709   MARCO   0
    ENSPPAG00000035484      B_2B    119679840       119686120       -       6281    C1QL2   0
    ENSPPAG00000005832      B_2B    119692903       119693196       +       294     RF00017 0
    ENSPPAG00000029473      B_2B    119752363       119787051       +       34689   STEAP3  7
    ENSPPAG00000041702      B_2B    119823756       119887553       -       63798   C2orf76 6
    ENSPPAG00000038470      B_2B    119887728       119892986       +       5259    NA      248

Can you look over the description of input types here:

http://bioconductor.org/packages/release/bioc/vignettes/DESeq2/inst/doc/DESeq2.html#input-data