差异分析

pheatmap 行名在左侧

2021-01-28  本文已影响0人  周运来就是我

需求如题,效果如下:

library(pheatmap)
library(grid)
library(gtable)

colors = c(seq(-5,-1,length=1000),seq(-.999999,.999999,length=1000),seq(1, 5,length=1000))
my_palette <- colorRampPalette(c("blue", "white", "red"))(n = 2999)

data.random <- data.frame(matrix(data=rnorm(150), ncol=15, nrow=10))
rownames(data.random) <- letters[1:10]
colnames(data.random) <- LETTERS[1:15]

# Modified pheatmap:::heatmap_motor
heatmap_motor <- function (matrix, border_color, cellwidth, cellheight, tree_col, 
                           tree_row, treeheight_col, treeheight_row, filename, width, 
                           height, breaks, color, legend, annotation_row, annotation_col, 
                           annotation_colors, annotation_legend, annotation_names_row, 
                           annotation_names_col, main, fontsize, fontsize_row, fontsize_col, 
                           hjust_col, vjust_col, angle_col, fmat, fontsize_number, number_color, 
                           gaps_col, gaps_row, labels_row, labels_col, ...) 
{
  lo = pheatmap:::lo(coln = labels_col, rown = labels_row, nrow = nrow(matrix), 
                     ncol = ncol(matrix), cellwidth = cellwidth, cellheight = cellheight, 
                     treeheight_col = treeheight_col, treeheight_row = treeheight_row, 
                     legend = legend, annotation_col = annotation_col, annotation_row = annotation_row, 
                     annotation_colors = annotation_colors, annotation_legend = annotation_legend, 
                     annotation_names_row = annotation_names_row, annotation_names_col = annotation_names_col, 
                     main = main, fontsize = fontsize, fontsize_row = fontsize_row, 
                     fontsize_col = fontsize_col, angle_col = angle_col, gaps_row = gaps_row, 
                     gaps_col = gaps_col, ...)
  res = lo$gt
  mindim = lo$mindim
  if (!is.na(filename)) {
    if (is.na(height)) {
      height = convertHeight(gtable_height(res), "inches", valueOnly = T)
    }
    if (is.na(width)) {
      width = convertWidth(gtable_width(res), "inches", valueOnly = T)
    }
    r = regexpr("\\.[a-zA-Z]*$", filename)
    if (r == -1) 
      stop("Improper filename")
    ending = substr(filename, r + 1, r + attr(r, "match.length"))
    f = switch(ending, pdf = function(x, ...) pdf(x, ...), 
               png = function(x, ...) png(x, units = "in", res = 300, 
                                          ...), jpeg = function(x, ...) jpeg(x, units = "in", 
                                                                             res = 300, ...), jpg = function(x, ...) jpeg(x, 
                                                                                                                          units = "in", res = 300, ...), tiff = function(x, 
                                                                                                                                                                         ...) tiff(x, units = "in", res = 300, compression = "lzw", 
                                                                                                                                                                                   ...), bmp = function(x, ...) bmp(x, units = "in", 
                                                                                                                                                                                                                    res = 300, ...), stop("File type should be: pdf, png, bmp, jpg, tiff"))
    f(filename, height = height, width = width)
    gt = heatmap_motor(matrix, cellwidth = cellwidth, cellheight = cellheight, 
                       border_color = border_color, tree_col = tree_col, 
                       tree_row = tree_row, treeheight_col = treeheight_col, 
                       treeheight_row = treeheight_row, breaks = breaks, 
                       color = color, legend = legend, annotation_col = annotation_col, 
                       annotation_row = annotation_row, annotation_colors = annotation_colors, 
                       annotation_legend = annotation_legend, annotation_names_row = annotation_names_row, 
                       annotation_names_col = annotation_names_col, filename = NA, 
                       main = main, fontsize = fontsize, fontsize_row = fontsize_row, 
                       fontsize_col = fontsize_col, hjust_col = hjust_col, 
                       vjust_col = vjust_col, angle_col = angle_col, fmat = fmat, 
                       fontsize_number = fontsize_number, number_color = number_color, 
                       labels_row = labels_row, labels_col = labels_col, 
                       gaps_col = gaps_col, gaps_row = gaps_row, ...)
    grid.draw(gt)
    dev.off()
    return(gt)
  }
  if (mindim < 3) 
    border_color = NA
  if (!is.na(main)) {
    elem = pheatmap:::draw_main(main, fontsize = 1.3 * fontsize, ...)
    res = gtable_add_grob(res, elem, t = 1, l = 3, name = "main", 
                          clip = "off")
  }
  if (!pheatmap:::is.na2(tree_col) & treeheight_col != 0) {
    elem = pheatmap:::draw_dendrogram(tree_col, gaps_col, horizontal = T)
    res = gtable_add_grob(res, elem, t = 2, l = 3, name = "col_tree")
  }
  if (!pheatmap:::is.na2(tree_row) & treeheight_row != 0) {
    elem = pheatmap:::draw_dendrogram(tree_row, gaps_row, horizontal = F)
    res = gtable_add_grob(res, elem, t = 4, l = 1, name = "row_tree")
  }
  elem = pheatmap:::draw_matrix(matrix, border_color, gaps_row, gaps_col, 
                                fmat, fontsize_number, number_color)
  res = gtable_add_grob(res, elem, t = 4, l = 3, clip = "off", 
                        name = "matrix")
  if (length(labels_col) != 0) {
    pars = list(labels_col, gaps = gaps_col, fontsize = fontsize_col, 
                hjust_col = hjust_col, vjust_col = vjust_col, angle_col = angle_col, 
                ...)
    elem = do.call(pheatmap:::draw_colnames, pars)
    res = gtable_add_grob(res, elem, t = 5, l = 3, clip = "off", 
                          name = "col_names")
  }
  if (length(labels_row) != 0) {
    pars = list(labels_row, gaps = gaps_row, fontsize = fontsize_row, 
                ...)
    elem = do.call(pheatmap:::draw_rownames, pars)
    res = gtable_add_grob(res, elem, t = 4, l = 3, clip = "off", 
                          name = "row_names")
  }
  if (!pheatmap:::is.na2(annotation_col)) {
    converted_annotation = convert_annotations(annotation_col, 
                                               annotation_colors)
    elem = pheatmap:::draw_annotations(converted_annotation, border_color, 
                                       gaps_col, fontsize, horizontal = T)
    res = gtable_add_grob(res, elem, t = 3, l = 3, clip = "off", 
                          name = "col_annotation")
    if (annotation_names_col) {
      elem = pheatmap:::draw_annotation_names(annotation_col, fontsize, 
                                              horizontal = T)
      res = gtable_add_grob(res, elem, t = 3, l = 4, clip = "off", 
                            name = "col_annotation_names")
    }
  }
  if (!pheatmap:::is.na2(annotation_row)) {
    converted_annotation = convert_annotations(annotation_row, 
                                               annotation_colors)
    elem = pheatmap:::draw_annotations(converted_annotation, border_color, 
                                       gaps_row, fontsize, horizontal = F)
    res = gtable_add_grob(res, elem, t = 4, l = 2, clip = "off", 
                          name = "row_annotation")
    if (annotation_names_row) {
      elem = pheatmap:::draw_annotation_names(annotation_row, fontsize, 
                                              horizontal = F, hjust_col = hjust_col, vjust_col = vjust_col, 
                                              angle_col = angle_col)
      res = gtable_add_grob(res, elem, t = 5, l = 2, clip = "off", 
                            name = "row_annotation_names")
    }
  }
  annotation = c(annotation_col[length(annotation_col):1], 
                 annotation_row[length(annotation_row):1])
  annotation = annotation[unlist(lapply(annotation, function(x) !pheatmap:::is.na2(x)))]
  if (length(annotation) > 0 & annotation_legend) {
    elem = pheatmap:::draw_annotation_legend(annotation, annotation_colors, 
                                             border_color, fontsize = fontsize, ...)
    t = ifelse(is.null(labels_row), 4, 3)
    res = gtable_add_grob(res, elem, t = t, l = 6, b = 5, 
                          clip = "off", name = "annotation_legend")
  }
  if (!pheatmap:::is.na2(legend)) {
    elem = pheatmap:::draw_legend(color, breaks, legend, fontsize = fontsize, 
                                  ...)
    t = ifelse(is.null(labels_row), 4, 3)
    res = gtable_add_grob(res, elem, t = t, l = 5, b = 5, 
                          clip = "off", name = "legend")
  }
  return(res)
}

# Modified pheatmap:::lo    
lo <- function (rown, coln, nrow, ncol, cellheight = NA, cellwidth = NA, 
                treeheight_col, treeheight_row, legend, annotation_row, annotation_col, 
                annotation_colors, annotation_legend, annotation_names_row, 
                annotation_names_col, main, fontsize, fontsize_row, fontsize_col, 
                angle_col, gaps_row, gaps_col, ...) 
{
  if (!is.null(coln[1]) | (!pheatmap:::is.na2(annotation_row) & annotation_names_row)) {
    if (!is.null(coln[1])) {
      t = coln
    }
    else {
      t = ""
    }
    tw = strwidth(t, units = "in", cex = fontsize_col/fontsize)
    if (annotation_names_row) {
      t = c(t, colnames(annotation_row))
      tw = c(tw, strwidth(colnames(annotation_row), units = "in"))
    }
    longest_coln = which.max(tw)
    gp = list(fontsize = ifelse(longest_coln <= length(coln), 
                                fontsize_col, fontsize), ...)
    coln_height = unit(1, "grobheight", textGrob(t[longest_coln], 
                                                 rot = angle_col, gp = do.call(gpar, gp))) + unit(10, 
                                                                                                  "bigpts")
  }
  else {
    coln_height = unit(5, "bigpts")
  }
  if (!is.null(rown[1])) {
    t = rown
    tw = strwidth(t, units = "in", cex = fontsize_row/fontsize)
    if (annotation_names_col) {
      t = c(t, colnames(annotation_col))
      tw = c(tw, strwidth(colnames(annotation_col), units = "in"))
    }
    longest_rown = which.max(tw)
    gp = list(fontsize = ifelse(longest_rown <= length(rown), 
                                fontsize_row, fontsize), ...)
    rown_width = unit(1, "grobwidth", textGrob(t[longest_rown], 
                                               rot = 0, gp = do.call(gpar, gp))) + unit(10, "bigpts")
  }
  else {
    rown_width = unit(5, "bigpts")
  }
  gp = list(fontsize = fontsize, ...)
  if (!pheatmap:::is.na2(legend)) {
    longest_break = which.max(nchar(names(legend)))
    longest_break = unit(1.1, "grobwidth", 
                         textGrob(as.character(names(legend))[longest_break], 
                                  gp = do.call(gpar, gp)))
    title_length = unit(1.1, "grobwidth", textGrob("Scale", 
                                                   gp = gpar(fontface = "bold", ...)))
    legend_width = unit(12, "bigpts") + longest_break * 1.2
    legend_width = max(title_length, legend_width)
  }
  else {
    legend_width = unit(0, "bigpts")
  }
  if (is.na(main)) {
    main_height = unit(0, "npc")
  }
  else {
    main_height = unit(1.5, "grobheight", textGrob(main, 
                                                   gp = gpar(fontsize = 1.3 * fontsize, ...)))
  }
  textheight = unit(fontsize, "bigpts")
  if (!pheatmap:::is.na2(annotation_col)) {
    annot_col_height = ncol(annotation_col) * (textheight + 
                                                 unit(2, "bigpts")) + unit(2, "bigpts")
    t = c(as.vector(as.matrix(annotation_col)), colnames(annotation_col))
    annot_col_legend_width = unit(1.2, "grobwidth", textGrob(t[which.max(nchar(t))], 
                                                             gp = gpar(...))) + unit(12, "bigpts")
    if (!annotation_legend) {
      annot_col_legend_width = unit(0, "npc")
    }
  }
  else {
    annot_col_height = unit(0, "bigpts")
    annot_col_legend_width = unit(0, "bigpts")
  }
  if (!pheatmap:::is.na2(annotation_row)) {
    annot_row_width = ncol(annotation_row) * (textheight + 
                                                unit(2, "bigpts")) + unit(2, "bigpts")
    t = c(as.vector(as.matrix(annotation_row)), colnames(annotation_row))
    annot_row_legend_width = unit(1.2, "grobwidth", textGrob(t[which.max(nchar(t))], 
                                                             gp = gpar(...))) + unit(12, "bigpts")
    if (!annotation_legend) {
      annot_row_legend_width = unit(0, "npc")
    }
  }
  else {
    annot_row_width = unit(0, "bigpts")
    annot_row_legend_width = unit(0, "bigpts")
  }
  annot_legend_width = max(annot_row_legend_width, annot_col_legend_width)
  treeheight_col = unit(treeheight_col, "bigpts") + unit(5, 
                                                         "bigpts")
  treeheight_row = unit(treeheight_row, "bigpts") + unit(5, 
                                                         "bigpts")
  if (is.na(cellwidth)) {
    mat_width = unit(1, "npc") - rown_width - legend_width - 
      treeheight_row - annot_row_width - annot_legend_width
  }
  else {
    mat_width = unit(cellwidth * ncol, "bigpts") + length(gaps_col) * 
      unit(4, "bigpts")
  }
  if (is.na(cellheight)) {
    mat_height = unit(1, "npc") - main_height - coln_height - 
      treeheight_col - annot_col_height
  }
  else {
    mat_height = unit(cellheight * nrow, "bigpts") + length(gaps_row) * 
      unit(4, "bigpts")
  }
  gt = gtable(widths = unit.c(treeheight_row, rown_width,  
                              mat_width, treeheight_row, legend_width, annot_legend_width), 
              heights = unit.c(main_height, treeheight_col, annot_col_height, 
                               mat_height, coln_height), vp = viewport(gp = do.call(gpar, 
                                                                                    gp)))
  cw = convertWidth(mat_width - (length(gaps_col) * unit(4, 
                                                         "bigpts")), "bigpts", valueOnly = T)/ncol
  ch = convertHeight(mat_height - (length(gaps_row) * unit(4, 
                                                           "bigpts")), "bigpts", valueOnly = T)/nrow
  mindim = min(cw, ch)
  res = list(gt = gt, mindim = mindim)
  return(res)
}

# Modified pheatmap:::draw_rownames      
draw_rownames <- function (rown, gaps, ...) 
{
  coord = pheatmap:::find_coordinates(length(rown), gaps)
  y = unit(1, "npc") - (coord$coord - 0.5 * coord$size)
  res = textGrob(rown, x = unit(-3, "bigpts"), y = y, vjust = 0.5, 
                 hjust = 1, gp = gpar(...))
  return(res)
}

assignInNamespace(x="draw_rownames", value=draw_rownames, ns="pheatmap")
assignInNamespace(x="lo", value=lo, ns="pheatmap")
assignInNamespace(x="heatmap_motor", value=heatmap_motor, ns="pheatmap") 

?pheatmap

test = matrix(rnorm(200), 20, 10)
test[1:10, seq(1, 10, 2)] = test[1:10, seq(1, 10, 2)] + 3
test[11:20, seq(2, 10, 2)] = test[11:20, seq(2, 10, 2)] + 2
test[15:20, seq(2, 10, 2)] = test[15:20, seq(2, 10, 2)] + 4
colnames(test) = paste("Test", 1:10, sep = "")
rownames(test) = paste("Gene", 1:20, sep = "")

h <- pheatmap(test,
              cluster_rows=T,
              cluster_cols=T,
              legend=TRUE,
              color=my_palette,
              breaks=colors,
              show_rownames=TRUE,
              show_colnames=TRUE
)


https://stackoverflow.com/questions/57729914/how-can-you-show-the-rownames-in-pheatmap-on-the-left-side-of-the-graph

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