Box charts are used to show data grouped into range quartiles.

Here is a bar chart with a trace line. The first two data series are used for the stacked bars, and the remaining series is used for the line. chd=s2 indicates that the chart should use only the first two series for bars. The line uses the third series for its data.

• chd=s2:1XQbnf4,EWoQMUB,9halxp9 - Simple encoding, where the first two series are used to draw the bars, and the last series is used for the line.
• chm=D,0033FF,2,0,5,1 - Trace line (D), blue, data from series index 2, all points (0), line is 5 pixels wide, and has a z-order of 1.

Here is another stacked bar chart with an independent line drawn over it.

This example shows a chart showing only candlestick markers.

• chd=t0 - The 0 means that all data series are hidden from the basic chart type (here, a line chart), so only the candlesticks are drawn. The first and last values in each series are -1 to indicate missing values to avoid drawing the first or last candlestick, which would overlap the axis or chart margin and be cut off.
• chm=F,0000FF,0,-1,20 - The F indicates candlestick markers (originally "financial markers"); 0000FF means that the markers are blue when the value is decreasing; the 0 indicates that the candlestick data starts at series 0; -1 indicates markers on all points (we could have also specified 0:4 here to hide the first and last candlestick instead of using -1 data values); 20 is the width of the candlesticks.

Here's an example of a line chart with candlestick markers.

Five data series are provided; the first is used for the chart type (line), and the remaining "hidden" data series are used for the candlestick markers. The chd=t1 parameter specifies that only the first series is used for that chart type (line chart).

We omitted the first and last candlestick markers using 1:4 in the <which_points> value, because first and last candlesticks are cropped by the chart area borders.

The chm parameter specifies the candlestick markers, with the syntax F,<declining_color>,<data_series_index>,<which_points>,<width>,<order>

cht=lc
chd=t1:
  20,10,15,25,17,30|
  0,5,10,7,12,6|
  35,25,45,47,24,46|
  15,40,30,27,39,54|
  70,55,63,59,80,6
chm=
  F,,1,1:4,20

Another example of a candlestick chart, but with custom fill colors.

Here is an example of a bar chart with candlestick markers.

We show the first and last candlestick markers here, because the bars add enough spacing to prevent them from being cropped by the chart boundaries.

This is a standard box chart, but with different colors assigned to the different chart elements to highlight which marker is being used to create each chart element.

• cht=bvs - The base chart type is bvs, but no bars from this base chart are actually shown. We could have specified any compound chart type here.
• chd=t0: - The t0 hides all lines in this line chart. All data will be used only for markers. In the data, the first and last values are -1 to avoid having markers that overlap the left and right edges of the chart. All values in the second series are lower than the corresponding values in the third series, so all boxes are unfilled.
  • -1,5,10,7,12,-1 - Minimum value: bottom point of lower orange sticks; also the height of the horizontal green lines.
  • -1,25,30,27,24,-1 - 25% value: bottom horizontal edge of orange boxes.
  • -1,40,45,47,39,-1 - 75% value: top horizontal edge of orange boxes.
  • -1,55,63,59,80,-1 - Maximum value: top point of upper orange sticks; also the height of the horizontal blue lines.
  • -1,30,40,35,30,-1 - Black horizontal "Median" lines inside the candlesticks.
  • -1,-1,5,70,90,-1 - Outlier data (red circles)
  • -1,-1,-1,80,5,-1 - More outliers data (red circles). The outliers data is broken into two sets because you cannot have two markers, one above the other, specified in the same series without using offsets or other complicated tricks.
• chm= - Marker data, as described below:
  • F,FF9900,0,1:4,40 - Orange candlestick markers (F) using four data series starting at the first series (0), on points 1—4, size 40.
  • H,0CBF0B,0,1:4,1:20 - Green horizontal line markers showing the min value. These come from the first series.
  • H,0000FF,3,1:4,1:20 - Blue horizontal line markers showing the max value. These come from series 3.
  • H,000000,4,1:4,1:40 - Black horizontal line markers showing the 50% value. These come from series 4.
  • o,FF0000,5,-1,7 - Red circles assigned to the sixth data series for outliers. Markers are assigned to all elements in this series, which uses -1 for boxes without an outlier.
  • o,FF0000,6,-1,7 - More outliers. Another data series is required when you want to stack outliers on top of each other around the same box.

cht=bvs
chd=t0:
  -1,5,10,7,12,-1|
  -1,25,30,27,24,-1|
  -1,40,45,47,39,-1|
  -1,55,63,59,80,-1|
  -1,30,40,35,30,-1|
  -1,-1,5,70,90,-1|
  -1,-1,-1,80,5,-1
chm=
  F,FF9900,0,1:4,40|
  H,0CBF0B,0,1:4,1:20|
  H,000000,4,1:4,1:40|
  H,0000FF,3,1:4,1:20|
  o,FF0000,5,-1,7|
  o,FF0000,6,-1,7