Hello,

I'm trying to create an ideogram track in Gviz, but I receive the following error message that seems to have an issue with my chosen genome:

'''

ideogram <- IdeogramTrack("chrIX", "sacCer3")

Warning message: In value[3L] : There doesn't seem to be any cytoband data available for genome 'sacCer3' at UCSC or the service is temporarily down. Trying to fetch the chromosome length data. '''

Is anybody familiar with this error, or a possible workaround?

Thank you,

B

'''

sessionInfo() R version 3.6.0 (2019-04-26) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows 10 x64 (build 17134)

Matrix products: default

locale: [1] LCCOLLATE=EnglishUnited States.1252 LCCTYPE=EnglishUnited States.1252
[3] LCMONETARY=EnglishUnited States.1252 LCNUMERIC=C
[5] LCTIME=English_United States.1252

attached base packages: [1] grid stats4 parallel stats graphics grDevices utils datasets [9] methods base

other attached packages: [1] Gviz1.28.0 rtracklayer1.44.0
[3] GenomicAlignments1.20.0 Rsamtools2.0.0
[5] Biostrings2.52.0 XVector0.24.0
[7] SummarizedExperiment1.14.0 DelayedArray0.10.0
[9] BiocParallel1.17.18 matrixStats0.54.0
[11] Biobase2.44.0 GenomicRanges1.36.0
[13] GenomeInfoDb1.20.0 IRanges2.18.0
[15] S4Vectors0.22.0 BiocGenerics0.30.0

loaded via a namespace (and not attached): [1] httr1.4.0 bit640.9-7 splines3.6.0
[4] Formula1.2-3 assertthat0.2.1 BiocManager1.30.4
[7] latticeExtra0.6-28 blob1.1.1 BSgenome1.52.0
[10] GenomeInfoDbData1.2.1 progress1.2.0 pillar1.3.1
[13] RSQLite2.1.1 backports1.1.4 lattice0.20-38
[16] biovizBase1.32.0 glue1.3.1 digest0.6.18
[19] RColorBrewer1.1-2 checkmate1.9.3 colorspace1.4-1
[22] htmltools0.3.6 Matrix1.2-17 plyr1.8.4
[25] XML3.98-1.19 pkgconfig2.0.2 biomaRt2.40.0
[28] zlibbioc1.30.0 purrr0.3.2 scales1.0.0
[31] tibble2.1.1 htmlTable1.13.1 AnnotationFilter1.8.0
[34] ggplot23.1.1 GenomicFeatures1.36.0 nnet7.3-12
[37] lazyeval0.2.2 survival2.44-1.1 magrittr1.5
[40] crayon1.3.4 memoise1.1.0 foreign0.8-71
[43] data.table1.12.2 tools3.6.0 prettyunits1.0.2
[46] hms0.4.2 stringr1.4.0 munsell0.5.0
[49] cluster2.0.9 ensembldb2.8.0 AnnotationDbi1.46.0
[52] compiler3.6.0 rlang0.3.4 RCurl1.95-4.12
[55] dichromat2.0-0 rstudioapi0.10 VariantAnnotation1.30.0 [58] htmlwidgets1.3 bitops1.0-6 base64enc0.1-3
[61] gtable0.3.0 curl3.3 DBI1.0.0
[64] R62.4.0 gridExtra2.3 knitr1.22
[67] dplyr0.8.0.1 bit1.1-14 Hmisc4.2-0
[70] ProtGenerics1.16.0 stringi1.4.3 Rcpp1.0.1
[73] rpart4.1-15 acepack1.4.1 xfun0.6
[76] tidyselect0.2.5

'''

Hi,

This was just a warning not error, telling you that there is no cytoband data available for yeast genome ''sacCer3". However in that case, Gviz draws a simple chromosome highlighting the position of your interest:

library(Gviz)
plotTracks(ideogram, from=1e5, to=1.5e5)

Best Robert