Blue Man

A detailed hand-drawn line chart (lxy).

By: Roberto Mensa

Tour de France, Charted

By: Thomas Guest

1987, Pedro Delgado

Graphic reproduction of Stephen Roche's dramatic mountain stage in the 1987 Tour. Pedro Delgado, wearing yellow, had built a substantial lead over his rival on the climb up La Plagne. Yet somehow Roche clawed his way back into contention, appearing at the finish line just 5 seconds down on Delgado. He surprised everyone. He collapsed, exhausted, and had to be given oxygen, but he’d done enough; Roche went on to win the Tour. Formidable!

2009, Mark Cavendish

Mercurial manxman Mark Cavendish won an incredible 6 stages of last the 2009 Tour. Here he is, becoming the first Briton ever to win the final showdown on the Champs-Élysées, and winning it by an immense margin.

Pac-Man

A pie chart that resembles the legendary Pac-Man.

By: Paolo Massa

Mondrian

Line chart reproduction of the famous painting by Piet Mondrian: "Composition with Yellow, Blue, and Red" (1937-42) built with linechart.

By: Dmitry Scriptin

Scatter Chart Star Map

Shows a star chart for a specific location on earth, showing the equator (x), the ecliptic (o), the pole (N), zenith (z) and several planets (h—Saturn, d—Mars, D—the moon).

By: Mike Duffy

Fox

Line chart (lxy) trace of a hand-drawn image.

By: James of EPH Phone Answering Services

Punchcard Chart (Scatterplot)

A nice example of using both size and placement of points in a scatterplot to convey information. Some things to note in this chart URL:

• cht=s - This is a scatterchart.
• chd=0,1,2,3,...|0,0,0,0,...|0,1,3,0 - The data in this chart is very neatly laid out in grid form. This scatterchart uses three series; the last series is used to specify dot size.
• chds=-1,24,-1,7,0,17 - The chds parameter sets a scale of -1—24 columns and -1—7 rows. This allows you to specify dots using a simple grid corresponding to hours and days, where zero is the first entry. The scales start with -1 so that dots are not drawn right on the axis lines (it adds a blank row/column around the chart).
• chm=o,333333,1,-1,25 - Specifies the default marker type used for all points. It assigns a nearly black circle 25 points across as the default size. 25 is the size of the maximum data value; values less than this in the third data series will cause smaller dots.
• chxl=0:||12am|1|2|3|4|5|6|7|8|9|10|11|12pm|1|2|3|4|5|6|7|8|9|10|11||1:||Sun|Mon|Tue|Wed|Thr|Fri|Sat| - The labels for the x- and y-axes. The first value is empty (specified as '||') for both axes, to leave an empty space on the axis intersection.

By: github.com

Web traffic line chart (Line chart)

A nicely done line chart demonstrating line styles, overlapping markers, grid lines, fills, and range markers. Here are the parameters of interest:

• cht=lc - A line chart, which spaces points evenly along the x-axis.
• chg=25,25,3,2 - Specifies the grid size and pattern. Here it's 25-unit lines along both the x- and y-axes, with a three-pixel dash and a two-pixel space, giving dashed lines.
• chf=bg,s,1F1D1D|c,lg,0,363433,1.0,2E2B2A,0.0 - Two fills: one for the chart background, and a lighter one for the chart plot area.
• chm= - The white-filled diamond markers on the line are actually a combination of two markers: a line-color marker first, then a slightly smaller white marker of the same size and shape on the same point, giving the appearance of a white-fill diamond marker. Because the fill color is specified first, it will be beneath the white marker automatically, so you don't need to specify the z-order value for the marker to handle layering.
  • r,FF00004C,0,0.40,0.60 - Horizontal red band across the chart background. Note how the start and end values are from the range of 0.0-1.0, not 0-100. It also specifies a transparency to allow the grid lines and background to show through.
  • R,0080004C,0,0.70,0.90 - Vertical green band across the chart background. Note how the start and end values are from the range of 0.0-1.0, not 0-100. It also specifies a transparency to allow the grid lines and background to show through.
  • d,CA3D05,0,-1,12,0|d,FFFFFF,0,-1,8,0 - Red diamond markers on all points on the blue line. The first marker is the red diamond, the second is slightly smaller and white.
  • d,87CEEB,1,-1,12,0|d,FFFFFF,1,-1,8,0 - Blue diamond markers on all points on the blue line. The first marker is the blue diamond, the second is slightly smaller and white.
• chxt=y,y,x,x,x and  chxl=0:||25|50|75|100|1:|Hits|2:|Nov|Dec|Jan|Feb|Mar|3:|2007|2007|2008|2008|2008|4:|Month - Axis labels. This chart shows five sets of axis labels: two y-axes, and three x-axes. The innermost y-axis (index 0) includes a blank label instead of a "0" marker, which would crowd the lower left corner of the chart a bit.
• chxp=1,50.0| 4,50.0 - Specifies the placement of the "Hits" and "Month" labels on the y- and x-axes, respectively.
• chma=55,120,0,0 - The left and right margins are increased to add a little space between the sides of the chart and the "Hits" label and legend text.

By: charts4j.com

Radar Chart

A nicely done radar chart with markers showing some rather poor grades in different fields of study.

• cht=r - A radar chart.
• chxt=y,x - Show the numeric scale as concentric circles (x-axis), plus degree markers (y-axis).
• chls=4 - Line style for the radar trace line (four-pixel-wide line).
• chd=t:80,49,48,78,59,80 - The data includes one redundant point: the first and last point have the same value, to enable the plot to wrap nicely.
• chxp=0,0,20,40,60,80,100 - Specifies the grid lines to show on the x-axis. Without this parameter, grid lines would be shown every 10 units, which would create a very busy chart.
• chxl=1:|Maths|Arts|French|German|Music - Only five labels specified for six data points. The chart is sliced into whichever is greater: labels or (data points - 1). In this chart, they are the same value.
• chm=s,CC3366,0,-1,12,0|s,FFFFFF,0,-1,8,0 - Creates a filled-square style marker, created by first specifying red squares, then a slightly smaller white square. The white square is specified second, so it is drawn second, and there is no need to worry about specifying z-order of each marker to determine how they are stacked.

By: charts4j.com

Fanciful Radar Chart

A fanciful radar chart. It consists of two data series: one for the petals, and one for the blue eye in the middle. The small pink circles are circle markers. The eye and the petals are colored using line fills. Some things to note in the URL:

• cht=rs - A radar chart of type rs rather than r to give rounded splines.
• chd=s: ... - Two data series specified, each with 202 data points. The first series is for the petals, the second is for the eye in the middle. Each point is about 360/202 = 1.8 degrees apart.
• chf=bg,s,504227 - Brown background fill
• chm=
  • B,8FA3D6,0,0,0 - The periwinkle fill for the petals.
  • o,FFC0CB,1,0,20,0 - Ten pink circle markers (not all shown here) 20 data points apart (about 36 degrees apart).
  • o,FFC0CB,1,20,20,0
  • o,FFC0CB,1,40,20,0
  • ...
  • o,FFC0CB,1,200,20,0
  • B,3D5593,1,0,0 - The dark blue fill for the central eye

By: charts4j.com

Lissajous Curve (Line chart)

Most people have seen a Lissajous curve on an oscilloscope.

This is an lxy line chart that uses a brute-force approach to plot every point in the curve, dot by dot. It describes the x- and y-coordinates of 800 individual points using extended encoding format.

By: charts4j.com

Vertical Bar Chart

The chart figures out the impact of rest days on the possession based stats in the NBA. It shows how NBA league average differs when the teams play with the given rest days.

By: NBAStuffer.com