Hi Joel.

The example you give here raises two separate issues:

1. null and 0 are not the same thing. From the point of view of the chart,
'null' means nothing is there and 0 means the value 0 (which are not the
same). For example, the line [2,3,null,null,4] is very different from
[2,3,0,0,4]. In the first case there would be only three points and 2 line
segments whereas in the second case there would be 5 points and 4 line
segments.

2. When all the data points of a single series are null, no line should be
drawn (as is the case indeed). However, the current implementation has a bug
which causes an error to be thrown in such a case (which does not affect the
chart's behavior though). We will have a look into it.

Please let us know if you have further questions.
Best,
  Viz Kid


On Tue, Dec 29, 2009 at 9:03 PM, Joel <[email protected]> wrote:

> http://www.speechtails.com/example.php
> http://www.speechtails.com/example.php/?fix
>
> Thanks for taking a look. Here's an example with the source code:
> toggle between the two different examples.
>
> the only difference between these two: using a 0 instead of null.
>
> the blue company gets removed when nulls are used because it doesn't
> chart at any point during the month so all values are null.
> that shouldn't cause an error though.
>
> i'm using safari and nightly webkit to test the error appears in the
> console log
>
> http://www.speechtails.com/example.php
> http://www.speechtails.com/example.php/?fix
>
>
>
> On Dec 24, 12:46 pm, ChartMan <[email protected]> wrote:
> > Can you please share an example page that reproduces this error.
> >
> >
> >
> > On Wed, Dec 23, 2009 at 8:10 PM, Joel Glovacki <[email protected]>
> wrote:
> > > CONSOLE MESSAGE: line 97: Error: Problem parsing d=""
> >
> > > Looks like it may be a webkit error.
> >
> > > but here's my visualization code:
> > > it works fine if i replace just the initial null value with "0"
> >
> > > {
> > >    "version": "0.6",
> > >    "table": {
> > >        "cols": [
> > >            {
> > >                "id": "A",
> > >                "label": "Date",
> > >                "type": "string",
> > >                "pattern": ""
> > >            },
> > >            {
> > >                "id": "B",
> > >                "label": "Speech Tails",
> > >                "type": "number",
> > >                "pattern": "#0.###############"
> > >            },
> > >            {
> > >                "id": "C",
> > >                "label": "Speech Therapy Online",
> > >                "type": "number",
> > >                "pattern": "#0.###############"
> > >            }
> > >        ],
> > >        "rows": [
> > >            {
> > >                "c": [
> > >                    {
> > >                        "v": "Dec 10"
> > >                    },
> > >                    {
> > >                        "v": null,
> > >                        "f": "No Rankings"
> > >                    },
> > >                    {
> > >                        "v": null,
> > >                        "f": "No Rankings"
> > >                    }
> > >                ]
> > >            },
> > >            {
> > >                "c": [
> > >                    {
> > >                        "v": "Dec 22"
> > >                    },
> > >                    {
> > >                        "v": 42,
> > >                        "f": "Position 42"
> > >                    },
> > >                    {
> > >                        "v": null,
> > >                        "f": "No Rankings"
> > >                    }
> > >                ]
> > >            }
> > >        ]
> > >    },
> > >    "status": "ok"
> > > }
> >
> > > --
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