calculating polyline length in a polygon

[davidwelch]

using arcgis 9.3.1,
I would like to calculate polyline length within polygons (they are overlapping)

with smaller file size the intersect command and tabular analysis did the trick.

the current polygon file I have has ~50,000 records, which will create too large of a file size.

I am not versed in any language (VBA, python); so I'll consider any approach you can suggest and try to make it work.

   thanks

[WoodrowFields]

It sounds like you may want to try using the Clip tool to clip out everything in the polyline feature class that is not within a polygon.  Then with the new clipped feature you could use "Calculate Geometry" by right clicking on a column in the attribute table and choose Length as the property to calculate.