❞ 最近看一篇文章的时候,发现文章的作者很厉害,写了一个用于单细胞转录组和Bulk RNA的可视化R包---dittoSeq。如果你对於seurat的可视化看腻了,这个R包是一个不错的选择。当然了,我还是那句话,够用就行了,之所以要介绍这个包,主要是里面几个函数非常有用!!!能够解决几个头疼的问题。 R包地址:https://github.com/dtm2451/dittoSeq。具体有用的参数我已经探索好了,详细注释代码已上传群文件!其他参数感兴趣的可自行探索! 首先加载R包并做一个小提琴图,风格挺好看的。 ####安装R包,加载数据 BiocManager::install("dittoSeq") library(dittoSeq) library(dplyr) mouse_data <- readRDS("D:/KS科研分享与服务公众号文章/mouse_data.rds")
####基因表达小提琴图 #theme主题的修饰和ggplot一样 dittoPlot(mouse_data, "S100a8", group.by = "orig.ident", plots=c("vlnplot","boxplot"), boxplot.fill=F, boxplot.color='white', color.panel = dittoColors(), colors = c(1,3), theme = theme(axis.text = element_text(size = 12, color = 'black'), axis.line = element_line(size = 1), axis.title.y = element_text(size = 15, color = 'black'), plot.title = element_text(size=15,hjust=0.5, color = 'black')), ylab = 'Expression', y.breaks = seq(0,8,1), xlab = '', x.labels = c("Female","Male"), x.labels.rotate =F, max=8, min=4, main = "S100a8", legend.show = F)
![](http://image109.360doc.com/DownloadImg/2023/01/1609/259130812_3_20230116093939649_wm.png)
看一下UMAP图,可以置信区间:
####UMAP图---seurat中的dimplotdittoDimPlot(mouse_data, var = 'ident', size = 2, # split.by='orig.ident', do.ellipse =T, main = '', theme=theme(axis.text = element_text(size = 12, color = 'black'), axis.line = element_line(size = 1), axis.title = element_text(size = 15, color = 'black')), show.axes.numbers=T, do.label=T, labels.size = 4, # add.trajectory.lineages=T, # add.trajectory.curves=T, #有轨迹分析的话可以添加轨迹 legend.show=F) 更为重要的是,很多时候,我们做基因表达的时候,UMAP图标记,发现有些有表达的点被覆盖了,导致感觉表达不高,这里完美解决!
####UMAP图---seurat中的Featureplot p1 <- dittoDimPlot(mouse_data, var = 'Il1b', size = 2, theme = theme_classic(), min.color = "lightgrey", max.color = "blue", main = "dittoSeq plot", order = "increasing")#这个函数的优势
p2 <- FeaturePlot(mouse_data, features = 'Il1b', pt.size = 2)+ ggtitle('Seurat plot')
p1|p2
![](http://image109.360doc.com/DownloadImg/2023/01/1609/259130812_4_2023011609394071_wm.png)
第二个优势,我们在seurat中查看细胞比例柱状图的时候,需要先进行麻烦的细胞比例计算,然后用ggplot作图,这里可以直接作图! ####单细胞比例图p3 <- dittoBarPlot(mouse_data, "celltype", group.by = "orig.ident",main = '')p4 <- dittoBarPlot(mouse_data, "orig.ident", group.by = "celltype",main = '')p3|p4 ![](http://image109.360doc.com/DownloadImg/2023/01/1609/259130812_5_20230116093940680_wm.png)
最后一个我认为比较好的,就是热图,可以进行多重注释,很简单,而且出图快,也不会有bug,值得拥有!
marker <- FindAllMarkers(mouse_data, min.pct = 0.25, logfc.threshold = 0.25, only.pos = T)
top_gene = marker %>% group_by(cluster) %>% top_n(n = 5, wt = avg_log2FC)
#### p5 <- dittoHeatmap(mouse_data, genes = top_gene$gene, annot.by = c("celltype", "SingleCellNet_Xie", "orig.ident"), scaled.to.max = F, treeheight_row = 10, heatmap.colors = colorRampPalette(c('#1A5592','white',"#B83D3D"))(50), show_rownames=F, highlight.features = c( "Ltf","Camp","Ngp", "Il1b","Fgl2","Itga4","Csf3r", "Ngp","Lcn2","Camp"))
![](http://image109.360doc.com/DownloadImg/2023/01/1609/259130812_6_20230116093941321_wm.png)
好了,这些就是我认为比较好的地方了,其他的感兴趣的可自行探索。我想这个包结合自己的分析,在可视化上面相辅相成,有很大的促进。觉得分享有用的点个赞再走呗!
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