[GRASS-user] How to make a conversion of ERSI Grid ASCII==>USGS DEM?

[M S]

You're on the right track.  If you have obtained a an ESRI GRID representing
a DEM in an e00 format, then with GDAL and/or GRASS you can convert from
ESRI GRID (e00) to USGS DEM format, with the workflow Hamish outlined
previously.

ESRI data is in binary raster/vector formats when ESRI software is
reading/writing data.  Your e00 is an ASCII export format of the binary GRID
(e00's are also for arc/info coverage vector exports).  e00's were intended
to export raster and vector data from arc/info workspaces for importing into
other ones, because you cant easily copy/move/share datasets in the native
format.  ESRI GRIDS use a directory for the spatial component in a
directory, linked to attribute data in a separate INFO directory which has
all the workspace attributes in it. e00's grab relavant attributes from the
INFO directory and package them with the spatial data from another
directory, into one ASCII e00 file (or if specified e00, e01, etc.)

Best of luck.
Mark

On Sun, Mar 1, 2009 at 10:26 AM, Illidan <illidan.modeler at gmail.com> wrote:

> I'm overall new to GIS. But my work has to rely on USGS DEM formatted
> data, so I cannot run away.
>
> However, I'm only fortunate enough to get DEM data in ESRI ASCII
> format. That's why I have to do a conversion.
>
> http://en.wikipedia.org/wiki/ESRI_grid
>
> I guess ESRI ASCII format is well-known to GIS guys. Maybe I made a
> mistake mixing e00 up with ESRI ASCII. A friend of mine, who is now a
> newbie GIS engineer, told me that ESRI ASCII was the same thing as e00
> file.
>
>
>
> On Sun, Mar 1, 2009 at 7:29 PM, MS <mseibel at gmail.com> wrote:
> > e00s can contain all the formats Hamish mentioned.   I think the question
> > was more about the type of data the e00 contains.
> >
> > Mark
> >
> > On Mar 1, 2009, at 6:06 AM, Illidan <illidan.modeler at gmail.com> wrote:
> >
> >> On Sun, Mar 1, 2009 at 4:05 PM, Hamish <hamish_b at yahoo.com> wrote:
> >>>
> >>> Illidan wrote:
> >>>>
> >>>> I'm trying a conversion of from ERSI Grid ASCII(e00) to legacy USGS
> >>>> DEM that one old piece of software I'm using supports. I searched the
> >>>> web and only got results about the reverse conversion, i.e. USGS
> >>>> DEM==> e00. So I ask for help here. I appreciate any feasible work
> >>>> flow or hint on an existing conversion software.
> >>>
> >>> $ gdalinfo --formats | grep USGS
> >>>  DOQ1 (ro): USGS DOQ (Old Style)
> >>>  DOQ2 (ro): USGS DOQ (New Style)
> >>>  ISIS3 (ro): USGS Astrogeology ISIS cube (Version 3)
> >>>  ISIS2 (ro): USGS Astrogeology ISIS cube (Version 2)
> >>>  USGSDEM (rw): USGS Optional ASCII DEM (and CDED)
> >>>
> >>> (see gdal.org)
> >>>
> >>> hopefully you want USGSDEM? if so import to GRASS with v.in.e00 and
> >>> do what you have to do to get into raster format before running
> >>> "r.out.gdal format=USGSDEM". what is the nature of the e00 file?
> >>> contour lines? TIN? points? ascii-grid of some sort?
> >>
> >> Thanks for you reply. I'll try what you suggest.
> >>
> >> e00 is plain text file containing raster data, developed by ESRI. It
> >> contains headers of about six lines, followed by raster data for each
> >> cell. Its format is somewhat similar to USGS DEM.
> >>
> >>
> >>>
> >>>
> >>> Hamish
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >>
> >> --
> >> Illidan
> >> Networking System Modeler
> >> Northern Capital, Republic of Pandaren
> >> http://illidan.go.3322.org
> >> _______________________________________________
> >> grass-user mailing list
> >> grass-user at lists.osgeo.org
> >> http://lists.osgeo.org/mailman/listinfo/grass-user
> >
>
>
>
> --
> Illidan
> Networking System Modeler
> Northern Capital, Republic of Pandaren
> http://illidan.go.3322.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/grass-user/attachments/20090301/32becd7c/attachment.html