Hi list. I would like to know if someone had already successfully loaded and Arc/Info Ungenerated (.dat – extracted from http://rimmer.ngdc.noaa.gov/mgg/coast/getcoast.html) file on R. I’m able to do so with shape files using maptools functions, but these ungenerated data are making me crazy. I don’t have any of ArcGIS tools (one of them probably can do that), and I can’t find any free tool that converts these .dat (lat, long coordinates) to .shp. Any Ideas on how to do that, or how to import it (as polygons probably). Thanks in advance. ------------------------------------------------------------- MSc. <mailto:r.aluizio@gmail.com> Rodrigo Aluizio Centro de Estudos do Mar/UFPR Laboratório de Micropaleontologia Avenida Beira Mar s/n - CEP 83255-000 Pontal do Paraná - PR - Brasil [[alternative HTML version deleted]]
Hi Ruser,
I tried that to use the Import71 tool, which is capable of convert e00 to
shp, but the only thing I got was an error.
Thank you any way for the try.
Rodrigo
De: milton ruser [mailto:milton.ruser@gmail.com]
Enviada em: quarta-feira, 3 de junho de 2009 09:25
Para: Rodrigo Aluizio
Assunto: Re: [R] Arc/Info Ungenerate - shp - Maps
Hi Aluizio
have you tryed to rename .dat to .e00?
sometimes this can help the arcgis understand the format.
I never done this.
good luck
milton
On Wed, Jun 3, 2009 at 8:17 AM, Rodrigo Aluizio <r.aluizio@gmail.com>
wrote:
Hi list.
I would like to know if someone had already successfully loaded and Arc/Info
Ungenerated (.dat – extracted from
http://rimmer.ngdc.noaa.gov/mgg/coast/getcoast.html) file on R. I’m able to
do so with shape files using maptools functions, but these ungenerated data
are making me crazy.
I don’t have any of ArcGIS tools (one of them probably can do that), and I
can’t find any free tool that converts these .dat (lat, long coordinates) to
.shp.
Any Ideas on how to do that, or how to import it (as polygons probably).
Thanks in advance.
-------------------------------------------------------------
MSc. <mailto:r.aluizio@gmail.com> Rodrigo Aluizio
Centro de Estudos do Mar/UFPR
Laboratório de Micropaleontologia
Avenida Beira Mar s/n - CEP 83255-000
Pontal do Paraná - PR - Brasil
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On Wed, Jun 3, 2009 at 1:17 PM, Rodrigo Aluizio <r.aluizio at gmail.com> wrote:> Hi list. > > I would like to know if someone had already successfully loaded and Arc/Info > Ungenerated (.dat ? extracted from > http://rimmer.ngdc.noaa.gov/mgg/coast/getcoast.html) file on R. I?m able to > do so with shape files using maptools functions, but these ungenerated data > are making me crazy. > > I don?t have any of ArcGIS tools (one of them probably can do that), and I > can?t find any free tool that converts these .dat (lat, long coordinates) to > .shp.If you look at the ungenerate format files you'll see that they are plain text: 1 -17.999932,27.647185 -18.000812,27.646891 -18.002572,27.648651 -18.003452,27.648651 -18.004332,27.647771 etc etc until END 2 [more coord pairs] END etc etc until END END So you could read these in with 'scan' or 'read.table', and then manipulate them in order to feed to the sp routines for constructing Spatial Line or Polygon objects. See Bivand,Pebesma and Gomez-Rubio's Applied Spatial Data Analysis in R book for details. Once you've written a nice function to do that, tell us and maybe it'll go into a package somewhere. [ An easy trick would be to open the file in a text editor, and replace any line that didn't have a comma with NA,NA: then you could read the whole thing using read.csv, and then use plot(...,type='l') to display the features. The NA,NA coords act as a break to produce separate polygons or line segments ] You might also like to ask on the R-sig-geo group. Probably more appropriate mailing list than this one. Barry
