Selecting polyline features with values from a raster layer

Discussion created by ry4647 on Jul 15, 2011
Latest reply on Apr 28, 2014 by Cheekychives

I am trying to select polyline features which lie on raster cells that are above a given threshold value. The raster cells are valued from 3-9 and I want to select the polylines that lie on cells valued at 6 or higher. The only way that I can think of to do this is to decide the threshold, in my case 6, and then selected the cells above the value. Then convert the result to a vector, do a "select by location" to find all the polylines that are completely within a polygon with the value = 1However, when I try to use ArcScan to export the selection to a new layer, the Arcscan toolbar isn't active.

Can anyone help me or have a better idea on how to select the features using raster data?