R notes

jupyter/r.md

@@ -8,3 +8,27 @@ scale_y_continuous(
           limits = c(glob$PriceMin, glob$PriceMax)
       ) +
 ```
+
+how to loop through rows of a column
+```
+for (i in dim1) {
+    for (j in i) {
+        print(j);
+    }
+}
+```
+
+build a list of plots and use grid.arrange
+```
+do.call(grid.arrange,plot_list)
+```
+
+re-sort a dataframe and print each row of a column
+```
+dim1 <- dim1[order(dim1$list),];
+for (i in dim1) {
+    for (j in i) {
+        print(j);
+    }
+}
+```