I want to merge polyline with polygon in arcgis
we can merge polyline with polygon when the data are same (like ID is equal in both polyline and polygon; but when the value of both are different when i merge them some values are missing,
e.g. polyline has ID=15; polygon has ID=6
then after merging we will get only 6 values and the other will be missed!
Any one has idea about this, please tell?
You can't. Geometry is what defines a feature class or shapefile. There is no Polygon/Polyline hybrid.
What kind of analysis are you doing? I ask this as it is easier to use another method dependant on what you are trying to achieve. For example, buffer the polyline to make them a polygon geometry..
Simon is right. Each layer only has one feature class. Depending on the analysis that you want to do, you should try different methods to unify the ty of feature.
Thank you Simon Kettle;
I want to reclassify the polygon based on the field data on the polyline; and as i wrote the field data on the polyline is higher in number than the data on the polygon;
I used for this Spatial Join, but i got only the average data, so how can i got all the data??
I understand that you are looking to copy over some attribute data from a polyline to the polygon?
I am not clear what you mean by only getting average data from the spatial join...do you mean you only joined a subset of your data or that the attribute values were averaged?
If you are looking for a simple transfer over of attribute data from one feature to another you should have a look at Attribute Transfer Mapping on the spatial adjustment toolbar. Otherwise I'd suggest working with arcpy.da.UpdateCursor.
Hi!
What is it exactly that you want to do?
As I understand, you have a set of polygons and polylines. Every polygon has a value for a variable X. The polylines include new updated data regarding variable X. Every polyline segment has a different value for variable X. Do you now want to get a list of variable-X values that correspond to the values of the line segments that are fall within every polygon?
Are you after a table that looks something like this:
Polygon ------ > Line ------ > Variable X
Polygon A -------- >line_segment_f ------- > 5
Polygon A -------- >line_segment_g ------ >10
Polygon A -------- >line_segment_k-------- >6
Polygon A -------- >line_segment_k-------- >7
Polygon A -------- >line_segment_d-------- >2
Polygon B -------- >line_segment_d-------- >2
Polygon B -------- >line_segment_a-------- >1
Polygon B -------- >line_segment_d-------- >2
Polygon C -------- >line_segment_e-------- >8
Spatial Join will intersect the polyline segments with the polygons and aggregate the variable X values of the polyline line-segments according to the function you choose (min, max, average, etc.).
Have you tried to check the "JOIN_ONE_TO_MANY" Join Operation option in the Spatial Join tool?
The default option is JOIN_ONE_TO_ONE. If a line segment is crossing more than one polygons, then (if this option is selected) the value from the line segment will only be included in one of the polygons. So this could be the reason why you end up having less values...
I would try the Intersect tool:
http://pro.arcgis.com/en/pro-app/tool-reference/analysis/intersect.htm
http://pro.arcgis.com/en/pro-app/tool-reference/analysis/how-intersect-analysis-works.htm
and make sure to go through the different "intersection" options:
http://pro.arcgis.com/en/pro-app/tool-reference/data-management/select-by-location-graphical-examples.htm
Alternatively you could try this SQL script in PostGIS or SQL Server:
SELECT PolygonID, PolyLineID, Variable_X
FROM PolygonTableName INNER JOIN PolyLineTableName ON
ST_Intersects (PolygonTableName.polygon_geom, PolyLineTableName.polyLine_geom)
ORDER BY PolygonID
Hope this helped!
Best regards,
Karolina
Karolina is correct suggesting those geoprocessing tools - let us know if this worked for you!?
Cheers,
Simon
Thank you Karolina D Pantazatou for valuable information , the matter has been solved,
(( The default option is JOIN_ONE_TO_ONE. If a line segment is crossing more than one polygons, then (if this option is selected) the value from the line segment will only be included in one of the polygons. So this could be the reason why you end up having less values... ))
thanks to you again
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