Re: Fwd: reportlab-users Digest, Vol 122, Issue 10

On 17/02/2014 09:21, Helga Peters wrote:
> Dear Robin,
>
> My excusses for not providing you with a runnable example.
> I try to be clearer.
>
> ##############################
> if __name__=='__main__':
>          from reportlab.graphics.shapes import Drawing
>          from reportlab.graphics.charts.barcharts import VerticalBarChart
>          from reportlab.graphics.charts.linecharts import HorizontalLineChart
>          from reportlab.lib import colors
>          drawing = Drawing(250, 175)
the above makes little sense the height should be >= lc.y + lc.width and the 
width >= lx.x + lc.height

>          data = [ (3,3,3,10,14,1,1,1,11,13,12,7)  ]
>
>          lc = HorizontalLineChart()
>          lc.x = 40
>          lc.y = -175

for me the above makes no sense. It moves things below the bottom of the image. 
I assume you are using this in some larger art board or a translated canvas 
where this still allows the image to be seen.

>          lc.height = 225
>          lc.width = 610
>          lc.data = data
>          lc.joinedLines = 1
>          lc.inFill = 0
>
>          lc.categoryAxis.categoryNames = ['0:00','2:00','4:00',
> '6:00','8:00','10:00','12:00','14:00','16:00',  '18:00','20:00','22:00']
>          lc.valueAxis.valueMin = 0
>          lc.valueAxis.valueMax = 15
>          lc.lineLabelFormat = '%0.0f'
>          lc.lineLabelNudge = 5
>          lc.lines[0].strokeColor= colors.beige
>
>          data3=[ (0,0,0,2,7,0,1,1,7,5,6,2),
>                       (0,0,0,5,5,0,0,0,0,0,0,1),
>                       (0,0,0,0,0,0,0,0,2,6,4,1),
>                       (1,1,1,1,1,0,0,0,1,1,1,1),
>                       (1,1,1,1,1,0,0,0,1,1,0,1),
>                       (0,1,1,0,0,0,0,0,0,0,0,1),
>                       (0,0,0,1,0,1,0,0,0,0,1,0)
>                    ]
>          bc = VerticalBarChart()
>          bc.x = lc.x
>          bc.y = lc.y
>          bc.height = lc.height
>          bc.width = lc.width
>          bc.data = data3
>          bc.categoryAxis.style = 'stacked'
>          bc.valueAxis.valueMin = 0
>          bc.valueAxis.valueMax = lc.valueAxis.valueMax
>          bc.categoryAxis.visibleAxis =0
>          bc.categoryAxis.categoryNames = None
>          drawing.add(bc)

I added
            drawing.add(lc)



>          drawing.save(formats=['pdf'],fnRoot='helga-000',outDir='/tmp')
> ##############################
>
> Before adding 'data3' the output look like in the first image below. The
> data point values with red arrows are on or below the line, when
> 'data3'  is added

I am seeing only a white line on top of the bar chart, but only when I added the 
line chart after the bar chart. Again


> (second image below) these marked values can no longer be seen.  When I
> increase the 'lineLabelNudge', the values only move further from the line,
> or when I make it really small (e.g. 0.5), all the values move to on the
> line but are only half visible.
> Since in all the examples that I could find the values are shown above the
> lines, I wondered whether there is setting that I have missed ?
> Hope this was clearer,
> Regards,
> Helga


This code is showing both charts for me, but in an A4(nearly) sized drawing
##################################################################
if __name__=='__main__':
		from reportlab.graphics.shapes import Drawing
		from reportlab.graphics.charts.barcharts import VerticalBarChart
		from reportlab.graphics.charts.linecharts import HorizontalLineChart
		from reportlab.lib import colors
		drawing = Drawing(595, 842)
		data = [ (3,3,3,10,14,1,1,1,11,13,12,7)  ]

		lc = HorizontalLineChart()
		lc.x = 40
		lc.y = 100
		lc.height = 225
		lc.width = 610
		lc.data = data
		lc.joinedLines = 1
		lc.inFill = 0

		lc.categoryAxis.categoryNames = ['0:00','2:00','4:00',
				'6:00','8:00','10:00','12:00','14:00','16:00',	'18:00','20:00','22:00']
		lc.valueAxis.valueMin = 0
		lc.valueAxis.valueMax = 15
		lc.lineLabelFormat = '%0.0f'
		lc.lineLabelNudge = 5
		lc.lines[0].strokeColor= colors.beige

		data3=[ (0,0,0,2,7,0,1,1,7,5,6,2),
					 (0,0,0,5,5,0,0,0,0,0,0,1),
					 (0,0,0,0,0,0,0,0,2,6,4,1),
					 (1,1,1,1,1,0,0,0,1,1,1,1),
					 (1,1,1,1,1,0,0,0,1,1,0,1),
					 (0,1,1,0,0,0,0,0,0,0,0,1),
					 (0,0,0,1,0,1,0,0,0,0,1,0)
				  ]
		bc = VerticalBarChart()
		bc.x = lc.x
		bc.y = lc.y
		bc.height = lc.height
		bc.width = lc.width
		bc.data = data3
		bc.categoryAxis.style = 'stacked'
		bc.valueAxis.valueMin = 0
		bc.valueAxis.valueMax = lc.valueAxis.valueMax
		bc.categoryAxis.visibleAxis =0
		bc.categoryAxis.categoryNames = None
		drawing.add(bc)
		drawing.add(lc)
		drawing.save(formats=['pdf'],fnRoot='helga-001',outDir='/tmp/helga')
##################################################################

-- 
Robin Becker