LSHTM_analysis/scripts/functions/logoP_msa.R

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R

#logo plots
# one for multiple muts
# --> select/drop down option to filter count of nsSNPs
# --> select/drop down option for colour
# --> should include WT
# Data used
#tab_mt # mutant logo plot
#tab_wt # wt logo plot
# Make it hover over position and then get the corresponding data table!
#%%======================================================================
#==================
# logo data: OR
#==================
# NOTE: my_logo_col
LogoPlotMSA <- function(msaSeq_mut
, msaSeq_wt
, msa_method = 'bits' # or probability
, my_logo_col = "chemistry"
, x_lab = "Wild-type position"
, y_lab = "Count"
, x_ats = 13 # text size
, x_tangle = 90 # text angle
, y_ats = 13
, y_tangle = 0
, x_tts = 13 # title size
, y_tts = 13
, leg_pos = "top" # can be top, left, right and bottom or c(0.8, 0.9)
, leg_dir = "horizontal" #can be vertical or horizontal
, leg_ts = 16 # leg text size
, leg_tts = 16 # leg title size
)
{
############################################
# Data processing for logo plot for nsSNPS
############################################
cat("\nLength of MSA", nrow(msaSeq_mut)
, "\nlength of WT seq:", nrow(msaSeq_wt))
######################################
# Generating plots for muts and wt
#####################################
LogoPlotMSAL <- list()
if (my_logo_col %in% c('clustalx','taylor')) {
cat("\nSelected colour scheme:", my_logo_col
, "\nUsing black theme\n")
theme_bgc = "black"
xfont_bgc = "white"
yfont_bgc = "white"
xtt_col = "white"
ytt_col = "white"
}
if (my_logo_col %in% c('chemistry', 'hydrophobicity')) {
cat('\nSelected colour scheme:', my_logo_col
, "\nUsing grey theme")
theme_bgc = "grey"
xfont_bgc = "black"
yfont_bgc = "black"
xtt_col = "black"
ytt_col = "black"
}
#####################################
# Generating logo plots for nsSNPs
#####################################
#-------------------
# Mutant logo plot
#-------------------
p0 = ggseqlogo(msaSeq_mut
#msaSeq_mut$V1
, facet = "grid"
, method = msa_method
, col_scheme = my_logo_col
, seq_type = 'aa')
# further customisation
msa_mut_logo_P = p0 + theme(legend.position = leg_pos
, legend.direction = leg_dir
#, legend.title = element_blank()
, legend.title = element_text(size = leg_tts
, colour = ytt_col)
, legend.text = element_text(size = leg_ts)
, axis.text.x = element_text(size = x_ats
, angle = x_tangle
, hjust = 1
, vjust = 0.4
, colour = xfont_bgc)
#, axis.text.y = element_blank()
, axis.text.y = element_text(size = y_ats
, angle = y_tangle
, hjust = 1
, vjust = -1.0
, colour = yfont_bgc)
, axis.title.x = element_text(size = x_tts
, colour = xtt_col)
, axis.title.y = element_text(size = y_tts
, colour = ytt_col)
, plot.background = element_rect(fill = theme_bgc))
cat('\nDone: msa_mut_logo_P')
#return(msa_mut_logoP)
LogoPlotMSAL[['msa_mut_logoP']] <- msa_mut_logo_P
#---------------------------------
# Wild-type MSA: gene_fasta file
#---------------------------------
p1 = ggseqlogo(msaSeq_wt
#msaSeq_wt$V1
, facet = "grid"
, method = msa_method
, col_scheme = my_logo_col
, seq_type = 'aa')
# further customisation
msa_wt_logo_P = p1 +
theme(legend.position = "none"
, legend.direction = leg_dir
#, legend.title = element_blank()
, legend.title = element_text(size = leg_tts
, colour = ytt_col)
, legend.text = element_text(size = leg_ts)
, axis.text.x = element_text(size = x_ats
, angle = x_tangle
, hjust = 1
, vjust = 0.4
, colour = xfont_bgc)
, axis.text.y = element_blank()
, axis.title.x = element_text(size = x_tts
, colour = xtt_col)
, axis.title.y = element_text(size = y_tts
, colour = ytt_col)
, plot.background = element_rect(fill = theme_bgc)) +
ylab("")
cat('\nDone: msa_wt_logo_P')
#return(msa_wt_logoP)
LogoPlotMSAL[['msa_wt_logoP']] <- msa_wt_logo_P
#=========================================
# Output
# Combined plot: logo_MSA
#=========================================
cat('\nDone: msa_mut_logoP + msa_wt_logoP')
# colour scheme: https://rdrr.io/cran/ggseqlogo/src/R/col_schemes.r
#cat("\nOutput plot:", LogoSNPs_comb, "\n")
#svg(LogoSNPs_combined, width = 32, height = 10)
LogoMSA_comb = cowplot::plot_grid(LogoPlotMSAL[['msa_mut_logoP']]
, LogoPlotMSAL[['msa_wt_logoP']]
, nrow = 2
, align = "v"
, rel_heights = c(3/4, 1/4))
return(LogoMSA_comb)
}