pheatmap(mat,
    color = colorRampPalette(rev(brewer.pal(n = 7, name = "RdYlBu")))(100),
    kmeans_k = NA,
    breaks = NA,
    border_color = "grey60",
    cellwidth = NA,
    cellheight = NA,
    scale = "none",
    cluster_rows = TRUE,
    cluster_cols = TRUE,
    clustering_distance_rows = "euclidean",
    clustering_distance_cols = "euclidean",
    clustering_method = "complete",
    clustering_callback = NA,
    cutree_rows = NA,
    cutree_cols = NA,
    treeheight_row = ifelse(class(cluster_rows) == "hclust" || cluster_rows, 50, 0),
    treeheight_col = ifelse(class(cluster_cols) == "hclust" || cluster_cols, 50, 0),
    legend = TRUE,
    legend_breaks = NA,
    legend_labels = NA,
    annotation_row = NA,
    annotation_col = NA,
    annotation = NA,
    annotation_colors = NA,
    annotation_legend = TRUE,
    annotation_names_row = TRUE,
    annotation_names_col = TRUE,
    drop_levels = TRUE,
    show_rownames = TRUE,
    show_colnames = TRUE,
    main = NA,
    fontsize = 10,
    fontsize_row = fontsize,
    fontsize_col = fontsize,
    angle_col = c("270", "0", "45", "90", "315"),
    display_numbers = FALSE,
    number_format = "%.2f",
    number_color = "grey30",
    fontsize_number = 0.8 * fontsize,
    gaps_row = NULL,
    gaps_col = NULL,
    labels_row = NULL,
    labels_col = NULL,
    filename = NA,
    width = NA,
    height = NA,
    silent = FALSE,
    na_col = "#DDDDDD",
    name = "Matrix",
    ...)

# There is no example
NULL