From linechart to imagelinechart

[Antonio Bulgheroni]

Dear all,

   I'm having two issues going from the LineChart visualization to the ImageLineChart. Let me try to explain what I would like to do and where I'm failing.

I'm running a webpage showing a number of linechart using the Google chart tools. Data are stored into a MySQL database and I'm using something similar to this example to populate the DataTable.

I would like the user to be able to see the chart in three different ways: interactive using LineChart, tabular using Table and also as a simple png file to download and save it. I was very happy when I've found the ImageLineChart that is supposed to be a wrapper for a static png. This is minimally invasive in my code since I have just to deal with another visualization according to user selection.

Here you see an example of LineChart: http://www.grafici-reattori.tk/beta2/index.php?react=r1&param=Temp&vis=graph&startTime=2012-01-01&endTime=2012-02-14
and this should be the page containing the corresponding picture http://www.grafici-reattori.tk/beta2/index.php?react=r1&param=Temp&vis=chart&startTime=2012-01-01&endTime=2012-02-14

But... here my two problems come:

1. The first one is that I can't set the size of the chart. I've tried both setting chs and width height but with no luck.
2. The second one is even worse, because if I right-click on the chart and select Save image as, I got an empty file. Indeed this is pointing to http://chart.googleapis.com/chart with no parameters.
   

Can you help me in sorting this out?

Thanks in advance for every suggestions

toto

[Antonio Bulgheroni]

I've found another, possibly easier way out: using canvg to convert the svg to a picture. 

thanks anyway...

-----------------------------------------
Antonio Bulgheroni, PhD

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[ChartMan]

Thanks for your feedback.