Veidne:Bar chart/doc

{{Bar chart}} handles up to 4 columns and 30 rows of data.

Template:Graph:Chart is an alternative template that may produce higher-quality charts and has more functions in it

This template can be used to create a horizontal bar chart, scrolling down a page, in a format which can be parsed by text-based web browsers. The data items can be simple numbers, or the result of calculations based on template parameters.

Each data number (data1=7, data2=23...), in column 1, is scaled to parameter "data_max=" and the bars are sized by width in units, such as "bar_width=16" and "width_units=em". By default, the data numbers are shown within each bar, but might display outside a bar when a relatively small number generates a short bar. Each bar can also have a comment, such as "comment7=xx" to show "(xx)" after the number in bar 7.

For a 2-column bar chart, the 2nd column items have prefix "col2_" such as scale maximum, col2_data_max=110, and col2_data3=67 with col2_comment3=zz. See below: "Example with two data columns". Each bar chart can be formatted typically within 1/5 second.

Usage and parameters

The use of text other than numbers and proper punctuation in a data field will result in an Expression error.

{{Bar chart
| title         = <!-- Title bolded above table; defaults to "List of cities by population" in {bar_chart}. -->
| class         = <!-- Adds a class= parameter after the {| wikitable header -->
| table_width   = <!-- Sets the overall table width in width_units (or em if width_units is not present) -->
| table_style   = <!-- Additional parameters to be added to the table's style parameter -->
| bar_width     = <!-- uses 30 by default. Must be an unformatted number -->
| width_units   = <!-- uses 'em' units by default -->
| label_type    = <!-- Title for the label column; defaults to "City". -->

| label1        = <!-- Row 1 label -->
| label2        = <!-- Row 2 label -->
...
| label30       = <!-- Row 30 label -->

| data_type     = <!-- Title for column 1 data. In {{Bar chart}}, defaults to "Population". -->
| data_max      = <!-- Upper bound on the values in column 1 data fields (uses data1 if not present) -->
| data1         = <!-- Row 1, Column 1 data -->
| comment1      = <!-- Row 1, Column 1 comment -->
| color1        = <!-- Row 1, Column 1 bar colour -->
| data2         = <!-- Row 2, Column 1 data -->
| comment2      = <!-- Row 2, Column 1 comment -->
| color2        = <!-- Row 2, Column 1 bar colour -->
...
| data30        = <!-- Row 30, Column 1 data. {{Bar chart 4x9}} only supports up to data9. -->
| comment30     = <!-- Row 30, Column 1 comment. {{Bar chart 4x9}} only supports up to comment9.  -->
| color30       = <!-- Row 30, Column 1 bar colour -->

| col2_data_type= <!-- Title for column 2 data -->
| col2_data_max = <!-- Upper bound on the values in column 2 data fields (uses col2_data1 if not present) -->
| col2_data1    = <!-- Row 1, Column 2 data -->
| col2_comment1 = <!-- Row 1, Column 2 comment -->
| col2_data2    = <!-- Row 2, Column 2 data -->
| col2_comment2 = <!-- Row 2, Column 2 comment -->
...
| col2_data30   = <!-- Row 30, Column 2 data. {{Bar chart 4x9}} only supports up to col2_data9.  -->
| col2_comment30= <!-- Row 30, Column 2 comment. {{Bar chart 4x9}} only supports up to col2_comment9.  -->
}}

Alignment

To float the bar chart on the right of the page, use

| float       = right

To float the bar chart on the left of the page, use

| float       = left

To float the bar chart to the center of the page, use

| float       = center

The default is none.

Caption

To add a caption to the bottom of the chart, use

| caption     =

Example

Largest cities of Foo, 2009 Census
City	Population
City1	540,921
City2	194,343
City3	190,414
City4	134,669
City5	114,983

{{Bar chart
| title       = Largest cities of Foo, 2009 Census
| label_type  = City
| data_type   = Population
| bar_width   = 35
| width_units = em
| data_max    = 600000
| label1   = City1
| data1    = 540,921
| label2   = City2
| data2    = 194,343
| label3   = City3
| data3    = 190,414
| label4   = City4
| data4    = 134,669
| label5   = City5
| data5    = 114,983
}}

Example with comments

Annual revenue passenger statistics
Year	Passengers (% change from prior year)
2003-04	110,649(+17.8%)
2004-05	130,429(+17.9%)
2005-06	138,547(+6.2%)
2006-07	138,844(+0.2%)
2007-08	149,544(+7.7%)
2008-09	148,435(-0.7%)
2009-10	168,147(+13.3%)

{{Bar chart
| title      = Annual [[revenue passenger]] statistics
| label_type = Year
| data_type  = Passengers (% change from prior year)
| data_max   = 170,000
| label3  = 2003-04 | data3  = 110,649 | comment3  = +17.8%
| label4  = 2004-05 | data4  = 130,429 | comment4  = +17.9%
| label5  = 2005-06 | data5  = 138,547 | comment5  =  +6.2%
| label6  = 2006-07 | data6  = 138,844 | comment6  =  +0.2%
| label7  = 2007-08 | data7  = 149,544 | comment7  =  +7.7%
| label8  = 2008-09 | data8  = 148,435 | comment8  =  -0.7%
| label9  = 2009-10 | data9  = 168,147 | comment9  = +13.3%
}}

Example with two data columns

Annual passenger and aircraft statistics
Fiscal year	Revenue passengers	Aircraft movements
2001-02	20,194	2,281
2002-03	22,057	2,633
2003-04	34,794	2,664
2004-05	49,234	2,754
2005-06	57,732	3,004
2006-07	64,881	2,956
2007-08	63,904	2,912
2008-09	54,718	2,811
2009-10	52,210	2,791

{{Bar chart
| title       = Annual passenger and aircraft statistics
| bar_width   = 20
| width_units = em
| label_type  = [[Fiscal year]]
| label1  = 2001-02
| label2  = 2002-03
| label3  = 2003-04
| label4  = 2004-05
| label5  = 2005-06
| label6  = 2006-07
| label7  = 2007-08
| label8  = 2008-09
| label9  = 2009-10
| data_type = Revenue passengers
| data_max  = 66,000
| data1  = 20,194
| data2  = 22,057
| data3  = 34,794
| data4  = 49,234
| data5  = 57,732
| data6  = 64,881
| data7  = 63,904
| data8  = 54,718
| data9  = 52,210
| col2_data_type = Aircraft movements
| col2_data_max  = 3,200
| col2_data1  = 2,281
| col2_data2  = 2,633
| col2_data3  = 2,664
| col2_data4  = 2,754
| col2_data5  = 3,004
| col2_data6  = 2,956
| col2_data7  = 2,912
| col2_data8  = 2,811
| col2_data9  = 2,791
}}