Talk:Bar chart

message: I strongly recommend anyone thinking about creating a bar chart to try using the m:EasyTimeline syntax to do so. It's a bit time consuming, but fun, and best of all creates easy editable charts. For example:
ImageSize = width:400 height:200
PlotArea = width:300 height:150 left:50 bottom:20
AlignBars = late
DateFormat = yyyy
Period = from:0 till:25
TimeAxis = orientation:vertical
ScaleMajor = unit:year increment:5 start:0
BarData=
 bar:1 text:"Group 1"
 bar:2 text:"Group 2"
 bar:3 text:"Group 3"
 bar:4 text:"Group 4"
PlotData=
 width:15
 bar:1 color:blue from:0 till:24
 bar:2 color:green from:0 till:13
 bar:3 color:orange from:0 till:4
 bar:4 color:purple from:0 till:1
People generally put them in templates for articles, since they take up a fair bit of space. There's lots more customisation you can do beyond this one, too. pfctdayelise (translate?) 12:34, 15 August 2006 (UTC)
thread_title:  Bar charts on Wikipedia 

message: On 18 Jan 2009 the table of data was removed (with no comment explaining why). But the text of the article still refers to the table, which reference is confusing to the reader. Although the table of data does take up some space, I think it is helpful in explaining the chart. After all, the whole purpose of a bar chart is to visualize data. So I would propose that the table of data be restored as it existed prior to 18 Jan 2009. -- Llarq (talk) 16:49, 25 September 2009 (UTC)
thread_title:  Where's the table? 

message: The content of the article seems to imply that histograms are not bar graphs.  A histogram is a special type of bar graph.  Unfortunately, I don't know many quotes on this; I provide one I know below.  I've come across a lot of educators who falsely believe and teach that histograms are different from bar graphs "because" histograms are connected and bar graphs are not.  When the histogram concerns discrete (non-continuous) data, the histogram should have breaks between its bars.  If the data concerns a player's number of home runs, you could never have 3.5 or 7.2 home runs in a game.  So there should be a space between the data bins.    
"A histogram is a bar graph of frequencies of different numerical values within a population."
Dr. Math (2002) http://mathforum.org/library/drmath/view/61175.html
Thelema418 (talk) 09:31, 18 June 2012 (UTC)
replies: text: There is an important difference, in that bar charts show the "original data" while histograms involve the idea of a preliminary grouping of data into "bins" and what is plotted as a bar chart is the counts or proportions corresponding to these bins. Discrete-valued data can be binned or not. Of course the example in the paper shows a case where the countries of Europe hve been grouped together (atype of binning), so that there is not neccesarily a clear distinction. One could say that histograms show counts or proportions, while bar charts can show any quantities. The article chart more or less says this, and it may be that any discussion of technical differences between types of charts should be placed there, to avoid repetition. However, it may not be good to try to be too prescriptive over terminology. Melcombe (talk) 09:57, 18 June 2012 (UTC)
replies: text: Currently there is an uncited matter in the terminology that I am trying to address.  I'm proposing to note that a histogram is a "special type" of bar chart based on what Drexel's Dr. Math forum notes, instead of the uncited statement in the article "They [Histograms are Bar Graphs] are often mistaken for each other."  From what I have read the relationship of the two is like squares to parallelograms: every square is a special type of parallelogram, but not every parallelogram is a square.  In that context, saying "squares and parallelograms are mistaken for each other" would potentially mislead a reader's interpretation of the concepts. Is there a citable source that says otherwise about histograms and bar charts?  Thelema418 (talk) 23:08, 24 June 2012 (UTC)
thread_title:  Histograms Issue 

message: The "Usage" section is poorly written, especially the last paragraph. Furthermore, the part about histograms contains odd phrasings and unfinished sentences, and the examples of types of data they can contain are not very representative.  — Preceding unsigned comment added by 129.132.96.152 (talk) 06:56, 10 June 2015 (UTC)
thread_title:  Poorly written 

message: The literature on Gantt charts alternately describe them as a kind of bar graph or equate them with bar graphs entirely (Gantt chart#Definition). I'm struggling to understand what definition of bar graph is being used in this context. Specifically, Gantt charts do have horizontal bars of widths proportional to a value they represent (task duration). However, these bars are not all starting on the axis as I am accustomed to seeing bar charts. Can someone here clarify these definitions? Should this article have a hatnote to Gantt chart since some project management works refer to Gantt charts as Bar charts? Daask (talk) 07:35, 30 January 2018 (UTC)
thread_title:  Gantt charts and Bar Graphs