Python extract point by line every specific lenght

DEVAPP

Hi at all,

i could extract a point by a lines.

I have write a script for extract the start and end point of line, but i could exctract point by line every 500 meters respect the total lenght of line.

Is there in python some script to do this or some example (way) to see?

Thanks

Regards

DarrenWiens2

Jeff, you've pretty well described the exact process I linked to...

... perpLines = []  
... fc = "line"  
... sr = arcpy.Describe(fc).spatialReference  
... perpLineSpacing = 1000  
... perpLineLength = 1000  
... with arcpy.da.SearchCursor(fc,"SHAPE@",spatial_reference=sr) as cursor:  
...     for row in cursor:   
...         for part in row[0]: # part = a line array  
...             for i in range(len(part)):  
...                 if i==0: # first vertex  
...                     perpLineCounter = 0  
...                 else:  
...                     dy = part.Y - part[i-1].Y  
...                     dx = part.X - part[i-1].X  
...                     segmentAngle = math.degrees(math.atan2(dy,dx))  
...                     segmentLength = math.sqrt(math.pow(dy,2)+math.pow(dx,2))  
...                     linesOnSegment = int(segmentLength/perpLineSpacing)  
...                     for line in range(linesOnSegment+1):  
...                         point = row[0].positionAlongLine(perpLineCounter * perpLineSpacing)  
...                         left = arcpy.Point(point.centroid.X - (math.cos(math.radians(segmentAngle-90))*perpLineLength), point.centroid.Y - (math.sin(math.radians(segmentAngle-90))*perpLineLength))  
...                         right = arcpy.Point(point.centroid.X + (math.cos(math.radians(segmentAngle-90))*perpLineLength), point.centroid.Y + (math.sin(math.radians(segmentAngle-90))*perpLineLength))  
...                         perpLines.append(arcpy.Polyline(arcpy.Array([left,right]),sr))  
...                         perpLineCounter += 1  
... arcpy.CopyFeatures_management(perpLines ,r'in_memory\lines')