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>

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