R notes

jupyter/r.md

@@ -1,10 +1,34 @@
-using grid.arrange
-https://cran.r-project.org/web/packages/gridExtra/vignettes/arrangeGrob.html
-
-set and mirror axis limits:
-```
-scale_y_continuous(
-          breaks=seq(glob$PriceMin, glob$PriceMax, round(glob$StdDev * .5,2)),
-          limits = c(glob$PriceMin, glob$PriceMax)
-      ) +
+using grid.arrange
+https://cran.r-project.org/web/packages/gridExtra/vignettes/arrangeGrob.html
+
+set and mirror axis limits:
+```
+scale_y_continuous(
+          breaks=seq(glob$PriceMin, glob$PriceMax, round(glob$StdDev * .5,2)),
+          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);
+    }
+}
 ```