Hi All,
I'm working with a dashboard linking a slider with a line chart
filtering/displaying multiple columns/series.
Things work well/as expected to some extent. However, within certain
filter ranges, the underlying data table seems to begin filtering row
data as well as columns, which is the problem. Here's some related
code snippets:
function onControlStateChange() {
var controlState = slider.getState();
var filteredView =
filterView( dataTable,controlState.lowValue,controlState.highValue );
lineChart.setView( filteredView.toJSON() );
lineChart.draw();
}
function filterView( _table,_min,_max ) {
// filter a data table by min, max column values, producing a
data view.
var validColumns = [ 0 ];
var cellValue;
var valid;
for ( var i = 1;i<_table.getNumberOfColumns();i++ ) {
valid = true;
for ( var j = 0;j<_table.getNumberOfRows() && valid;j++ ) {
cellValue = _table.getValue( j,i );
if ( (cellValue < _min || cellValue > _max) && cellValue !=
null )
valid = false;
}
if ( valid )
validColumns.push( i );
}
var filteredView = new google.visualization.DataView( _table );
filteredView.setColumns( validColumns );
return filteredView;
}
validColumns data appears to remain correct/consistent, while the
underlying data table/chart seems to suffer the problem in some filter
ranges.
Has anyone else experienced this issue and/or know of a remedy?
Thanks
John
--
You received this message because you are subscribed to the Google Groups
"Google Visualization API" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/google-visualization-api?hl=en.
