Hi
- I'm building some code in order to select 2 strata variables using html
form/select.
<form id="formASL" name="formASL" onchange="drawChart()" >
<select id="ASLdropdown">
<option value="[203] ASL TO3">[203] ASL TO3</option>
<option value="[213] ASL AL">[213] ASL AL</option>
</select>
</form>
<form id="formFLUSSO" name="formFLUSSO" onchange="drawChart()" >
<select id="FLUSSOdropdown">
<option value="TOSSICODIPENDENZA">TOSSICODIPENDENZA</option>
<option value="ALCOLDIPENDENZA">ALCOLDIPENDENZA</option>
</select>
</form>
// Take selected STRATA(i)
mySTRATA1 = document.getElementById("ASLdropdown").value;
mySTRATA2 = document.getElementById("FLUSSOdropdown").value;
- Then I select the right values to be plot on an area chart according to
the filters defined by strata variabiles, just with a for cylce:
// Create the vars for CHART DATA TABLE
for(i=0; i<info.length; i++) {
if(mySTRATA1 == info[i].STRATA1 && mySTRATA2 == info[i].STRATA2
&& info[i].Anno=="2015") {
PREV2015 = info[i].Prevalenti;
INCI2015 = info[i].Incidenti;
}// end if
.....................
} // end for
- So I get the right values in the chart data table:
// Create the CHART DATA TABLE
var data = google.visualization.arrayToDataTable([
[ {label: 'Anno', id: 'anno', type: 'string'},
{label: 'Prevalenti', id: 'prevalenti', type: 'number'},
{label: 'Incidenti', id: 'incidenti', type: 'number'} ],
['2015', PREV2015, INCI2015],
['2016', PREV2016, INCI2016],
['2017', PREV2017, INCI2017],
['2018', PREV2018, INCI2018],
['2019', PREV2019, INCI2019]
]);
- Of course I call the proc to show the chart:
// show actual chart
var chart = new
google.visualization.AreaChart(document.getElementById('chart_div'));
chart.draw(data, options);
- And I put the code to let the chart to be saved:
// Allow to save chart BEGIN
google.visualization.events.addListener(chart, 'ready', function ()
{
chart_div.innerHTML = '<img src="' + chart.getImageURI() + '">';
});
document.getElementById('chart_png').outerHTML = '<a href="' +
chart.getImageURI() + '" >Salva il grafico</a>';
// Allow to save chart END
Now, everything works properly.
In particular if I go for saving the chart I just get everything is ok.
on the other hand, if I change the strata variabiles in any way, I get
properly the new chart, but (and here is finally the problem) , when I ask
for saving the chart, it shoes the previous chart, not the just changed one.
More, If I reload the page and then go to saving the chart , everything
goes fine.
I tried to force a page refresh, using
- onclick="window.location.reload();
- onclick="return RefreshWindow();
...
but nothing works.
anybody could help? thanks
Luca
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