|
 show symbol for AreaLayer with 1 datapoint |
| Posted by ddoyle on Feb-04-2020 03:53 |
|
If I add an AreaLayer and there is only a single datapoint, nothing shows up.
When I solved this for a line layer, I was able to do so with (php version, pulling out snippets of code from a large file):
$l = $c->addLineLayer2();
$d = $l->addDataSet($y_data, $color, $legend);
if ($n_pts == 1){
$d->setDataSymbol(CircleShape, 7, -1, 0xffffff, 5);
}
However, I can't find the equivalent for an AreaLayer. It sounds like I am supposed to add a ScatterLayer to accomplish this. So, I tried:
$l = $c->addAreaLayer($y_data, $color, $legend);
if ($n_points == 1){
$lscatter = $c->addScatterLayer(array(), array(), "",CircleShape, 7, -1, 0xffffff, 5);
}
But this doesn't seem to do anything. I assume I need to add my data into the area where it says array(), array(), but while I know the y-values, the x-values are whereever ChartDirector put them to make this a line chart, so I don't know what to fill in. |
| Re: show symbol for AreaLayer with 1 datapoint |
| Posted by Peter Kwan on Feb-04-2020 15:27 |
|
Hi ddoyle,
At least two points are required for a line, and it also applies for the area chart.
To add a symbol in the case of one point, if you do not use x-values, you can use array() as the x-values in addScatterLayer, like:
$c->addScatterLayer(array(), $y_data, "",CircleShape, 7, -1, 0xffffff, 5);
Alternatively, you can just add a line layer when there is only one data point (since you already have the line layer code working for one data point).
Hope this can help.
Regards
Peter Kwan |
|
Forum Home
Search
Message List
Post Message