Consider drawing a 0 height range as a line

[GoogleCodeExporter]

For a bar chart, if the bar goes from (0,0) for example, right now nothing is 
drawn.  I think drawing a 1-pixel horizontal line is a much superior look than 
leaving a gap.

Original issue reported on code.google.com by zvasv...@gmail.com on 11 Jan 2012 at 7:14

[GoogleCodeExporter]

Actually, instead of a 1-pixel line, the line width should be used, but in any 
case, just a horizontal line (or vertical) line.

Original comment by zvasv...@gmail.com on 11 Jan 2012 at 7:33

[GoogleCodeExporter]

Not sure I understand this request.

Original comment by dandrome...@gmail.com on 11 Jan 2012 at 7:55

[GoogleCodeExporter]

Not sure I understand this request.

Original comment by dandrome...@gmail.com on 11 Jan 2012 at 7:55

[GoogleCodeExporter]

Here's a screen shot.  Other than the obvious problems of a bunch of data 
points bunched up, the right side of the chart are data points which have a 
value of 0, so the range is (0,0).  There is nothing drawn there and when you 
zoom in, you get a black screen.  It would be much nicer to have horizontal 
lines there like the other data points with a small value.

Original comment by zvasv...@gmail.com on 11 Jan 2012 at 8:06

Attachments:

• chart.png

[GoogleCodeExporter]

Fixed in SVN rev r356.

Original comment by dandrome...@gmail.com on 11 Jan 2012 at 5:21

• Changed state: Fixed

[GoogleCodeExporter]

Thanks.  There is still an issue, though, please see attached screen.

The 0 values do render now, but not the very small values.

Original comment by zvasv...@gmail.com on 12 Jan 2012 at 3:08

Attachments:

• chart.png

[GoogleCodeExporter]

I changed the "if" statement to this to fix this:

if (Math.abs(yMax - yMin) < 1) {
   if (yMin < yMax)
       yMax = yMin + 1;
   else
       yMax = yMin - 1;
}

Original comment by zvasv...@gmail.com on 12 Jan 2012 at 3:31

[GoogleCodeExporter]

I included your fix. Thanks!

Original comment by dandrome...@gmail.com on 12 Jan 2012 at 1:28