Range Bar Chart: bug dataPointMinWidth

• November 6, 2018 at 5:36 pm #23335
  
  tedadradro

  Hi
  While it is possible to specify a minimum Width for a DataPoint in a Range Bar chart, it has a weird behaviour.
  in
  https://canvasjs.com/javascript-charts/range-bar-chart/
  using
  dataPointMinWidth
  produces TALLER bars, instead of having the minimum bar width
  if this is intentional, you should consider adding
  dataPointMinHeight

  thanks

  • This topic was modified 6 years ago by tedadradro. Reason: typos
  November 6, 2018 at 6:23 pm #23339
  
  Priyanka M S

  @tedadradro,

  Width and height for dataPoints are distributed along axisX and axisY respectively. In case of bar charts, axes x and y are switched because of which the dataPoint’s width will increase vertically(and not horizontally).

  __
  Priyanka M S
  Team CanvasJS

  November 6, 2018 at 7:02 pm #23340
  
  tedadradro

  Hi Priyanka
  as far as I can tell from the docs, there’s no property for datapoint min and max HEIGHT: (which translates in width in Bar Graphs) Max Width; Min Width
  so in a very crowded bar chart, (ie, with hundreds of datapoints) most often the datapoints DISAPPEAR because they are so thin that they are less than 1 pixel, and you cannot increase their height (that again, corresponds to width in a bar chart)

  • This reply was modified 6 years ago by tedadradro.
  November 6, 2018 at 10:22 pm #23345
  
  tedadradro

  Sample fiddle
  jsfiddle.net/91s7ajL3

  • This reply was modified 6 years ago by tedadradro.
  November 8, 2018 at 11:08 am #23359
  
  Vishwas R

  @tedadradro,

  Thanks for reporting the use-case. As of now, columns/dataPoints are getting disappeared when the values are pretty small compared to the axis range. In future versions, we will consider limiting the height of the column to a minimum pixel value so that it’s visible even in-case of smaller values.

  —
  Vishwas R
  Team CanvasJS

  November 8, 2018 at 1:43 pm #23363
  
  tedadradro

  I know, but that’s my real data. So there is currently no workaround?

  November 8, 2018 at 6:24 pm #23368
  
  Vishwas R

  @tedadradro,

  You can use scale-breaks to remove space between dataPoints and allow dataPoints accommodate more space within the plot-area. Please take a look at this updated JSFiddle.
  

  —
  Vishwas R
  Team CanvasJS

  November 12, 2018 at 8:58 pm #23410
  
  tedadradro

  Hi
  Scale breaks are not applicable in this scenario, because if the range is just some hour more, this is the (weird) result:
  https://jsfiddle.net/z7fmtxjr/

  I fear DataPointMinHeight would be the only viable solution

  • This reply was modified 6 years ago by tedadradro.
  November 13, 2018 at 11:39 am #23420
  
  Vishwas R

  @tedadradro,

  It’s not possible to set minimum-height of the column / bar, as of now. We will consider this behavior for future versions. However combination of Scalebreaks and Zooming / Panning would help you in this scenario. Please take a look at this updated JSFiddle.
  

  —
  Vishwas R
  Team CanvasJS

  November 13, 2018 at 3:23 pm #23424
  
  tedadradro

  Have you noticed what happens as soon as you expand the time range?
  https://jsfiddle.net/pdv76swb/
  (i just changed
  viewportMaximum: (new Date(2018,11,05,4,0,0)).getTime(),
  to
  viewportMaximum: (new Date(2018,11,05,23,0,0)).getTime(),
  to show you what happens as soon the viewport approaches a 24 hour period.

  • This reply was modified 6 years ago by tedadradro.
  • This reply was modified 6 years ago by tedadradro.
  • This reply was modified 6 years ago by tedadradro.
  November 14, 2018 at 10:49 am #23433
  
  Vishwas R

  @tedadradro,

  As mentioned earlier it’s not possible to have minimum height of the column / bar as of now. However by setting axis range to a smaller value by keeping difference between viewportMinimum and viewportMaximum smaller along with adding scale-breaks, dataPoints can be made visible which helps you visualize better.

  —
  Vishwas R
  Team CanvasJS

  November 14, 2018 at 7:01 pm #23447
  
  tedadradro

  Hi Vishwas
  I have a dataset consisting of more than 17’000 datapoints (the fiddle is a simplification) and my customer needs a 24h viewport with all the data.
  The logical answer is that CanvasJS is not able to represent such data at the moment I fear.

  November 19, 2018 at 1:52 pm #23480
  
  tedadradro

  …your lack of answers seems to confirm the above..

  January 26, 2019 at 1:12 am #24105
  
  tedadradro

  Two months.. any update?
  Thanks

  January 28, 2019 at 7:53 pm #24131
  
  Indranil

  @tedadradro,

  Thanks for your patience. We are working on some important update at this point. Hoverever, we have added your request to our list and will be fixing it in our future releases.

  ___________
  Indranil Deo,
  Team CanvasJS