Create plots dynamically in grid.arrange in R

[munasur12]

Hi,

I am trying to dynamically create ggplots using grid.arrange. Here is the code I am running:

 

plots.vec<-list()

for(cluster.name in names(gene.cluster.color.list)){

      

     tmp.m<-X_c_normalized[rownames(gene.cluster.color.list[[cluster.name]]),]

     tmp.m.melt<-melt(tmp.m)

      

         print(cluster.name)

       p1<-ggplot()

        p1<-p1+geom_line(data=tmp.m.melt,aes(x=X2, y=as.numeric(value),group=X1))

        p1<-p1+theme(panel.background = element_rect(fill = 'white',color="black"),plot.title =element_text(size=20
                     ,face='bold'))

        p1<-p1 + labs(title = cluster.name)+ xlab("Conditions") + ylab("Normalized Gene Expression")

        

         plots.vec[cluster.name[]]<-c(p1)

 }

jpeg(filename="~/testimage.jpg",width=900,height=900)

    do.call(grid.arrange, c(plots.vec, ncol=2))
dev.off()

    

However, I get the following error:

error in glist(list(data=list(), layers=list(<environment>),scales=<environment> :

only 'grobs' allowed in "glist"

Any insight you can give would be greatly appreciated.

thanks,

Muna

[Ben Bolker]

just a guess

do.call(grid.arrange, c(plots.vec, list(ncol=2))) ?

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[munasur12]

Ben,

Thanks for your prompt reply. I tried

do.call(grid.arrange, c(plots.vec, list(ncol=2)))

However, I am still getting the same error. I am new to ggplot and just learned about the gridExtra package. Therefore, I am not sure if it a mistake in the ggplot,gridExtra or both.

Best,

Muna