Extract the coordinates of a Polylines
On 1/30/19 7:12 AM, javad bayat wrote:
Dear all;
Back to my previous question, I am trying to add X and Y coordinates
to every row of the data.
topo =
readOGR("E:/New/Modelling_Water/MIKE/BathyMetry/GIS_Armator/Chitgar_Topo.shp")#Read
shape file of the topo as polylines
plot(topo)
cords = topo at lines[[1]]@Lines[[1]]@coords###Extracting X and Y
coordinates of the polylines of topo
head(topo at data)
? FID_? ? ?Entity? ? ? ?Layer Color? ?Linetype Elevation
? ? 0 LWPolyline C-TOPO-MAJR? ? ?9 Continuous? ? 1258.0
? ? 0 LWPolyline C-TOPO-MAJR? ? ?9 Continuous? ? 1258.5
? ? 0 LWPolyline C-TOPO-MAJR? ? ?9 Continuous? ? 1258.5
? ? 0 LWPolyline C-TOPO-MAJR? ? ?9 Continuous? ? 1258.5
? ? 0 LWPolyline C-TOPO-MAJR? ? ?9 Continuous? ? 1258.5
? ? 0 LWPolyline C-TOPO-MAJR? ? ?9 Continuous? ? 1258.5
I did a google-search on "lwpolyline" and it appears to be a structure that is created with AutoCAD. So it's unlikely that people who are primarily users of R's spatial data structures will know how rgdal (which is a layer on top of GDAL) will have implemented the importation of such a structure into R. You should instead provide the output of `dput (head(topo at data) )` if you want more informed comments. David.
How can I do this.
Sincerely.
On Sat, Jan 26, 2019 at 9:37 AM javad bayat <j.bayat194 at gmail.com
<mailto:j.bayat194 at gmail.com>> wrote:
Dear R users;
I am trying to extract the X and Y coordinates of a polylines
along with Elevation data. I have extracted the Elevations as Z,
but I do not know how to extract the X and Y of these Elevations.
Is it possible to extract X and Y of the Elevation and create a
data frame with three variables?
line = readOGR("E:/......../Topo.shp")
Z = line at data$Elevation
Sincerely.
--
Best Regards
Javad Bayat
M.Sc. Environment Engineering
Alternative Mail: bayat194 at yahoo.com <mailto:bayat194 at yahoo.com>
--
Best Regards
Javad Bayat
M.Sc. Environment Engineering
Alternative Mail: bayat194 at yahoo.com <mailto:bayat194 at yahoo.com>