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How to use JSL to quickly filter out all the rows in a data table with multi-column values that are not empty?

lwx228

If a data table has more than 100 columns.Given that columns 11 -- 100 are in numeric format, how can use JSL to quickly filter out all rows in column 11 -- 100 that are not null.

Thanks!

Accepted answers

txnelson

This should give you what you want.

Names Default To Here( 1 );
dt = Current Data Table();
dt << select where( Number( dt[Row(), Index( 11, 100 )] ) == 90 );
d3 = dt << Subset( Output Table( "t" ), Selected Rows( 1 ), selected columns( 0 ) );

All comments

lwx228

I see that this is a way to sum multiple columns in the same row.

sumVec = (VSum(mat`))`;

I want to do this, but I don't know how to figure out the number of non-null columns in the same row in this way.

Thanks!

dt = Current Data Table();
mat = dt[0, 11 :: 100];
nu = (Number( mat` ))`;
dt << New Column( "text", Numeric, Continuous, Values( nu ) );

dt << Select Where( :text == 90 );
d3 = dt << Subset( Output Table( "t" ), Selected Rows( 1 ), selected columns( 0 ) );

lwx228

No Number was found.

txnelson

This should give you what you want.

Names Default To Here( 1 );
dt = Current Data Table();
dt << select where( Number( dt[Row(), Index( 11, 100 )] ) == 90 );
d3 = dt << Subset( Output Table( "t" ), Selected Rows( 1 ), selected columns( 0 ) );

lwx228

Thank Jim!
This is an efficient way to do it.
How can do add a new column to the table and count the number of columns in row 11-100 that are not null?