R: Bar chart from hard-coded data

Got it! This site "robinsnyder.com" uses cookies. You consent to this by clicking on "Got it!" or by continuing to use this website. Note: This appears on each machine/browser from which this site is accessed.

This page looks at using hard-coded data.

An R program is provided to use that hard-coded data to create a bar chart.

Here are links to the topic series of representing and processing data.

R examples:

R: Bar chart from hard-coded data (this page)
R: Bar chart from CSV
R: Bar chart from JSON
R: Bar chart from XML

Python examples:

JavaScript and D3 examples:

JavaScript: SVG bar chart using D3

Julia examples:

Julia: Bar chart from JSON data using StatsPlots

... more to be added ... Notice below that when the data is hard-coded into the program as vectors, it is not necessarily easy to make changes to the data since changes need to be made in more than one place (e.g., to add a record, say, in the middle).

This way is show for example purposes. There are better ways to represent the data such is JSON, CSV, XML, etc.

Here is the R code [#1]

nameData1 <- c(
	"a",
	"b",
	"c",
	"d",
	"e",
	"f",
	"g",
	"h",
	"i",
	"j",
	"k",
	"l",
	"m",
	"n",
	"o",
	"p",
	"q",
	"r",
	"s",
	"t",
	"u",
	"v",
	"w",
	"x",
	"y",
	"z"
	)
valueData1 <- c(
	59900,
	11302,
	14311,
	34483,
	95247,
	17852,
	13528,
	62509,
	46347,
	2321,
	4449,
	25939,
	19154,
	51311,
	54741,
	9918,
	183,
	37468,
	44630,
	72396,
	20651,
	7458,
	18376,
	376,
	14814,
	234
	)
dataFrame1 <- data.frame(
	nameData1,
	valueData1,
	stringsAsFactors=FALSE
	)
colnames(dataFrame1) <- c("Letter","Count")
cat("\n")
cat("Data frame via Hard-coded data:\n")
print(dataFrame1)
imageFs2 <- "./rx.rx-16-01.png"
png(
	imageFs2,
	width=640,
	height=240
	)
labels1 = dataFrame1$Letter
barplot(
	dataFrame1$Count,
	main="Count by Letter",
	xlab="Letter",
	ylab="Count",
	names=labels1,
	cex.lab=1.5,
	cex.axis=1.2,
	cex.main=2.0,
	cex=0.9
	)
invisible(dev.off())

... more to be added ...

Here is the output of the R code.

Data frame via Hard-coded data:
   Letter Count
1       a 59900
2       b 11302
3       c 14311
4       d 34483
5       e 95247
6       f 17852
7       g 13528
8       h 62509
9       i 46347
10      j  2321
11      k  4449
12      l 25939
13      m 19154
14      n 51311
15      o 54741
16      p  9918
17      q   183
18      r 37468
19      s 44630
20      t 72396
21      u 20651
22      v  7458
23      w 18376
24      x   376
25      y 14814
26      z   234