I am using the approach suggested by @XanGregg in this post to make vector plots in Graph Builder. However, it seems the local data filter does not work on the arrows. It only filters the points but not the arrows. Do you have any suggestion on how to fix it?
Great! thanks @danschikore
If you want to make this work with the Local Data Filter, see the Scripting Index examples for:
box<
box<
These are similar to methods that you can use on the DataTable object, but if the given box is subject to a filter, they will use the filter row states instead of the data table row states.
Below is a piece of JSL that used a Data Filter, not a Local Data Filter to do what you want. A Data filter Excludes and Hides the rows in the data table, which are easily picked up in the Add Graphics Script. Using a Local Data Filter would require far more complexity. See if this method may work for you
Names Default To Here( 1 );
dt = Current Data Table();
New Window( "Filtered Arrows",
Lineup Box( N Col( 2 ),
dt << Data Filter(
Location( {780, 189} ),
Width( 197 ),
Mode( Show( 1 ), Include( 1 ) ),
Add Filter( columns( :Speed ), Display( :Speed, Size( 185, 20 ), Height( 50 ) ) )
),
dt << Bivariate(
Y( :Lat1 ),
X( :Lon1 ),
SendToReport(
Dispatch(
{},
"Bivar Plot",
FrameBox,
{Frame Size( 501, 429 ), Add Graphics Script(
2,
Description( "Script" ),
Pen Size( 2 );
For Each Row(
If( Excluded( Row State( Row() ) ) == 0,
Arrow( {:lon1, :lat1}, {:lon2, :lat2} )
)
);
), Grid Line Order( 3 ), Reference Line Order( 1 )}
)
)
)
)
);Thanks @txnelson. Could you please provide an example? I am not very well familiar with JSL. How can I make the Graphics Script to recognize the local data filter and bypass drawing of the arrows for those rows?
You will need to modify the Add Graphics Script code to recognize the new filter and then bypass drawing of the arrows for those rows. There are functions such as X Origin() and Y Origin(), X Range() and Y Range() that can be checked to see if the graph has changed, and then you can display the filtered arrows.
