如何利用Matlab绘制出好看的火山图如何利用Matlab绘制出好看的火

这里画了一个示例：
【如何利用Matlab绘制出好看的火山图】数据来源
绘制效果：

文章图片

代码及说明：
使用代码时只需要改一开始导入的数据，和代码提示中X坐标区域范围和Y坐标区域范围，完整代码如下所示：

% 读取数据data=https://www.it610.com/article/readmatrix('volcano.txt'); logFC=data(:,2); padj=data(:,3); DB_not=(padj>0.5)|(logFC<0.5&logFC>-0.5); DB_up=padj<=0.05&logFC>=0.5; DB_down=padj<=0.05&logFC<=-0.5; ax=gca; hold(ax,'on'); grid(ax,'on'); % 需要适度调整的属性：坐标区域范围及刻度===================================ax.XLim=[-5,5]; ax.YLim=[-10,300]; ax.XTick=-5:2.5:5; ax.YTick=0:50:300; % =========================================================================ax.XLabel.String='log_2(FoldChange)'; ax.XLabel.FontSize=14; ax.XLabel.FontName='Cambria'; ax.XLabel.FontWeight='bold'; ax.YLabel.String='-log_{10}(padj)'; ax.YLabel.FontSize=14; ax.YLabel.FontName='Cambria'; ax.YLabel.FontWeight='bold'; ax.Color=[235,235,235]./255; ax.GridColor=[1 1 1]; ax.LineWidth=1.4; ax.GridAlpha=0.5; ax.XColor=[44,62,80]./255; ax.YColor=[44,62,80]./255; Hdl_not=scatter(logFC(DB_not),-log(padj(DB_not))./log(10),30,'filled',...'MarkerFaceColor',[190,190,190]./255,'MarkerEdgeColor',[190,190,190]./255,...'MarkerFaceAlpha',0.6); Hdl_up=scatter(logFC(DB_up),-log(padj(DB_up))./log(10),30,'filled',...'MarkerFaceColor',[196,88,62]./255,'MarkerEdgeColor',[196,88,62]./255,...'MarkerFaceAlpha',0.6); Hdl_down=scatter(logFC(DB_down),-log(padj(DB_down))./log(10),30,'filled',...'MarkerFaceColor',[1,114,182]./255,'MarkerEdgeColor',[1,114,182]./255,...'MarkerFaceAlpha',0.6); plot([ax.XLim(1),ax.XLim(2)],[-log(0.05)/log(10),-log(0.05)/log(10)],...'LineWidth',1.2,'Color',[.2,.2,.2],'LineStyle','-.')plot([-0.5,-0.5],[ax.YLim(1),ax.YLim(2)],...'LineWidth',1.2,'Color',[.2,.2,.2],'LineStyle','-.')plot([0.5,0.5],[ax.YLim(1),ax.YLim(2)],...'LineWidth',1.2,'Color',[.2,.2,.2],'LineStyle','-.')lgd=legend(ax,[Hdl_up,Hdl_not,Hdl_down],{'up','not','down'}); lgd.Title.String='threshold'; lgd.FontSize=12; lgd.Title.FontSize=13; lgd.EdgeColor=[44,62,80]./255; lgd.TextColor=[44,62,80]./230; lgd.FontName='Cambria'; lgd.Location='best';

可以看到各种参数设置颇多，一切为了画图质量hiahiahia，要是懒得设置建议直接发复制粘贴，有更强的审美的可以自行改写嗷。
如果希望显示显示坐标区域外的点，请使用如下代码：

% 读取数据data=https://www.it610.com/article/readmatrix('volcano.txt'); logFC=data(:,2); padj=data(:,3); DB_not=(padj>0.5)|(logFC<0.5&logFC>-0.5); DB_up=padj<=0.05&logFC>=0.5; DB_down=padj<=0.05&logFC<=-0.5; ax=gca; hold(ax,'on'); grid(ax,'on'); % 需要适度调整的属性：坐标区域范围及刻度===================================ax.XLim=[-8,8]; ax.YLim=[-10,200]; ax.XTick=-5:2.5:5; ax.YTick=0:50:300; % ==========================================================================DB_down_out=(-log(padj)./log(10)>ax.YLim(2)&logFC<=-0.5)|logFCax.YLim(2),2)=ax.YLim(2); DB_up_out=(-log(padj)./log(10)>ax.YLim(2)&logFC>=0.5)|logFC>ax.XLim(2); DB_up_out_Set=[logFC(DB_up_out),-log(padj(DB_up_out))./log(10)]; DB_up_out_Set(DB_up_out_Set(:,1)>ax.XLim(2),1)=ax.XLim(2); DB_up_out_Set(DB_up_out_Set(:,2)>ax.YLim(2),2)=ax.YLim(2); % =========================================================================ax.XLabel.String='log_2(FoldChange)'; ax.XLabel.FontSize=14; ax.XLabel.FontName='Cambria'; ax.XLabel.FontWeight='bold'; ax.YLabel.String='-log_{10}(padj)'; ax.YLabel.FontSize=14; ax.YLabel.FontName='Cambria'; ax.YLabel.FontWeight='bold'; ax.Color=[235,235,235]./255; ax.GridColor=[1 1 1]; ax.LineWidth=1.4; ax.GridAlpha=0.5; ax.XColor=[44,62,80]./255; ax.YColor=[44,62,80]./255; Hdl_not=scatter(logFC(DB_not),-log(padj(DB_not))./log(10),30,'filled',...'MarkerFaceColor',[190,190,190]./255,'MarkerEdgeColor',[190,190,190]./255,...'MarkerFaceAlpha',0.6); Hdl_up=scatter(logFC(DB_up),-log(padj(DB_up))./log(10),30,'filled',...'MarkerFaceColor',[196,88,62]./255,'MarkerEdgeColor',[196,88,62]./255,...'MarkerFaceAlpha',0.6); Hdl_down=scatter(logFC(DB_down),-log(padj(DB_down))./log(10),30,'filled',...'MarkerFaceColor',[1,114,182]./255,'MarkerEdgeColor',[1,114,182]./255,...'MarkerFaceAlpha',0.6); % -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -scatter(DB_up_out_Set(:,1),DB_up_out_Set(:,2),30,'filled','Marker','+',...'MarkerFaceColor',[196,88,62]./255,'MarkerEdgeColor',[196,88,62]./255,...'MarkerFaceAlpha',0.6,'LineWidth',1); scatter(DB_down_out_Set(:,1),DB_down_out_Set(:,2),30,'filled','Marker','+',...'MarkerFaceColor',[1,114,182]./255,'MarkerEdgeColor',[1,114,182]./255,...'MarkerFaceAlpha',0.6,'LineWidth',1); % -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -plot([ax.XLim(1),ax.XLim(2)],[-log(0.05)/log(10),-log(0.05)/log(10)],...'LineWidth',1.2,'Color',[.2,.2,.2],'LineStyle','-.')plot([-0.5,-0.5],[ax.YLim(1),ax.YLim(2)],...'LineWidth',1.2,'Color',[.2,.2,.2],'LineStyle','-.')plot([0.5,0.5],[ax.YLim(1),ax.YLim(2)],...'LineWidth',1.2,'Color',[.2,.2,.2],'LineStyle','-.')lgd=legend(ax,[Hdl_up,Hdl_not,Hdl_down],{'up','not','down'}); lgd.Title.String='threshold'; lgd.FontSize=12; lgd.Title.FontSize=13; lgd.EdgeColor=[44,62,80]./255; lgd.TextColor=[44,62,80]./230; lgd.FontName='Cambria'; lgd.Location='best';