| Problem with Line Chart with Null Data points [message #93133] |
Sun, 20 November 2005 04:25  |
Eclipse User |
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I have a Line Chart, with Date in X-Axis and Number in Y-Axis. There are
many lines in the same chart (Using series Grouping Key).
When there are Null values in Y-Axis (Null data points), in any of the
groups , Chart fails to generate and I receive error :
"There are errors on the report page:
+ There are error(s) in Chart:null
Error0 : Error.ExtendedItemRenderingError(1 time)detail: There are
problems(s) rendering Chart extended item .Cannot define all null values
on a plot"
I remember in JCharts i had to use Double.NaN in place on Null, so the
chart will be generated and those points will not be plotted.
In BIRT, i tried to put Number.NaN in place on each Null value, but no way.
How can I plot null data points ?
thanks
Mohamed Arafat
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| Re: Problem with Line Chart with Null Data points [message #93242 is a reply to message #93133] |
Mon, 21 November 2005 04:15  |
| Eclipse User |
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Hi Mohamed,
This problem has been fixed, did you try with the latest nightly build?
Thanks,
David
"Mohamed Arafat" <arafat_eg2000@yahoo.com> wrote in message
news:70e6159113a4c339c1bebf03d3f587a0$1@www.eclipse.org...
>
> I have a Line Chart, with Date in X-Axis and Number in Y-Axis. There are
> many lines in the same chart (Using series Grouping Key).
>
> When there are Null values in Y-Axis (Null data points), in any of the
> groups , Chart fails to generate and I receive error :
>
> "There are errors on the report page: + There are error(s) in Chart:null
> Error0 : Error.ExtendedItemRenderingError(1 time)detail: There are
> problems(s) rendering Chart extended item .Cannot define all null values
> on a plot"
>
> I remember in JCharts i had to use Double.NaN in place on Null, so the
> chart will be generated and those points will not be plotted.
>
> In BIRT, i tried to put Number.NaN in place on each Null value, but no
> way.
>
> How can I plot null data points ?
>
> thanks
> Mohamed Arafat
>
>
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| Re: Problem with Line Chart with Null Data points [message #96462 is a reply to message #93765] |
Mon, 05 December 2005 01:10 |
| Eclipse User |
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Hi,
Zhiqiang did an effort to fix it, but still there are bug with this chart.
I put a comment to bugzilla.
help is really appreciated.
Note : comment sent to bugzilla is attached here.
thanks
Mohamed Arafat
---------------------------------------------
Bug is not fixed. I use 1 Dec 2005 nightly build , It seems what you did
is
sorting values (data points) so null values come at the end, regardless
what
sorting user may use in SQL.
I have a chart showing the trend over time so data is sorted by date (X-
axis),
now the chart is showing null values at the end of the x-axis (where
should be
the latest value), so the chart is wrong and misleading.
data sample (real world data)
Survey Date Pipe Pressure Value
15-Apr-1990 X 880
15-Apr-1990 Y 0
15-Apr-1990 Z 0
30-Apr-1990 X 50
30-Apr-1990 Y 40
10-May-1990 X 650
10-May-1990 Y 75
21-Aug-1992 X 1,200
21-Aug-1992 Y 800
16-Sep-1997 X 1,050
16-Oct-1997 X 1,015
22-Feb-2002 X 900
22-Feb-2002 Y 200
10-Aug-2003 X 970
10-Aug-2003 Y
20-Nov-2004 X 970
20-Nov-2004 Y 80
Three pipes in the same equipment, should be surveyed for pressure, here
you
have one null value and in some dates some of the pipes were surveyd not
all.
the chart generated for this data is wrong. this chart should show the
pressure trend over time.
help with this bug is highly appreciated.
Thanks
Mohamed Arafat
-------------------------------------------------
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| Re: Problem with Line Chart with Null Data points [message #96635 is a reply to message #96462] |
Mon, 05 December 2005 12:32 |
| Eclipse User |
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Hi Mohamed,
If the bug isn't fixed, please reopen it. Can you also attach a screenshot
highlighting what is wrong with it?
Thanks,
David
"Mohamed Arafat" <arafat_eg2000@yahoo.com> wrote in message
news:53052ecb2b89caaec3eef80befff22a2$1@www.eclipse.org...
> Hi,
>
> Zhiqiang did an effort to fix it, but still there are bug with this chart.
> I put a comment to bugzilla.
> help is really appreciated.
>
> Note : comment sent to bugzilla is attached here.
> thanks
> Mohamed Arafat
> ---------------------------------------------
> Bug is not fixed. I use 1 Dec 2005 nightly build , It seems what you did
> is
> sorting values (data points) so null values come at the end, regardless
> what
> sorting user may use in SQL.
>
> I have a chart showing the trend over time so data is sorted by date (X-
> axis),
> now the chart is showing null values at the end of the x-axis (where
> should be
> the latest value), so the chart is wrong and misleading.
>
>
>
> data sample (real world data)
> Survey Date Pipe Pressure Value 15-Apr-1990 X 880
> 15-Apr-1990 Y 0
> 15-Apr-1990 Z 0
> 30-Apr-1990 X 50
> 30-Apr-1990 Y 40
> 10-May-1990 X 650
> 10-May-1990 Y 75
> 21-Aug-1992 X 1,200
> 21-Aug-1992 Y 800
> 16-Sep-1997 X 1,050
> 16-Oct-1997 X 1,015
> 22-Feb-2002 X 900
> 22-Feb-2002 Y 200
> 10-Aug-2003 X 970
> 10-Aug-2003 Y 20-Nov-2004 X 970
> 20-Nov-2004 Y 80
>
>
> Three pipes in the same equipment, should be surveyed for pressure, here
> you
> have one null value and in some dates some of the pipes were surveyd not
> all.
> the chart generated for this data is wrong. this chart should show the
> pressure trend over time.
>
> help with this bug is highly appreciated.
>
> Thanks
> Mohamed Arafat
>
>
> -------------------------------------------------
>
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